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Assessment of aluminium tolerance in maize using a rapid screening procedure
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Paula Mendes --- , M. P.W. Farina --- , P. Channon --- ,Routine testing for Al tolerance requires that screening procedures be both rapid and simple. Growth-chamber techniques, developed in the USA, show considerable promise in this regard and were used in this study to compare the Al tolerance of 10 maize... -
Screening for DIMBOA (benzoxazinone) concentration among South African inbred maize lines and sorghum cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. Malan --- , J.H. Visser --- Department of Botany, H.A. van de Venter --- Department of Botany,Twenty-seven popular South African inbred maize lines, four commercial maize cultivars, two sweet corn cultivars and two grain sorghum cultivars were screened by means of a rapid, semi-quantitative method to determine DIMBOA concentration. Significant differences were found between inbred lines... -
Tolerance of South African maize (Zea mays L.) cultivars to atrazine
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.R. Le Court De Billot --- Summer Grain Centre, P.C. Nel --- Department of Plant Production,Sixty-seven maize cultivars were evaluated for tolerance to atrazine (4 p.p.m. v/v) in nutrient solution. Shoot dry masses (SDM) of only two cultivars, SAB149 and NPP x K64r, were reduced more than 40% and another 14 were reduced by more... -
Die effek van plantpopulasie op die saadopbrengs van sonneblomkultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.L. Loubser --- , C.L. Grimbeek --- , L. A.S. Robertson --- , Beulah Bronkhorst --- , C. Serfontein --- , J.C. van der Sandt --- ,'n Aantal sonneblombasters is vergelyk by drie plantpopulasies oor twee seisoene te Ermelo, Sandvet en Warmbad. Die doel was om die kompensasievermoë van kultivars te bepaal vir 'n swak stand. Onder laepotensiaal-toestande was die kultivar X plantpopulasie-interaksie nie beduidend nie,... -
Performance of five soybean cultivars in relation to lime and phosphorus levels on an acid Ultisol
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.D. Noble --- Department of Crop Science, Republic of South Africa J.D. Lea --- Department of Crop Science, Republic of South Africa M.V. Fey --- Department of Soil Science and Agrometeorology, Republic of South AfricaThe seed-yield response of five soybean cultivars (Hill, Geduld, Forrest, Welkom and Oribi) to applications of lime [Ca(OH)2] and P was evaluated over two seasons in the field on an acid soil of the Normandien series (Plinthic Paleudult). As a... -
Release of cotton breeding lines (Gossypium hirsutum L.) adapted to South African conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa W.H. van Staden --- , Republic of South Africa L. J.B. Rossouw --- , Republic of South Africa C.G. Theron --- , Republic of South AfricaThe cotton breeding programme of the Tobacco and Cotton Research Institute has made available a number of advanced breeding lines and cultivars of cotton for a second cycle of intercrossing and selection. Selati, Gariep and NIK3 have been released for... -
Genotypic variation in leaf water potential of field-grown soybeans (Glycme max L. Merr.) and its association with dryland yield
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.F. Grant --- , Republic of South Africa J.D. Lea --- Department of Crop Science, Republic of South AfricaMaintenance of leaf water potential (ΨL) during periods of water stress may constitute an important drought-avoiding response. The identification of genotypic variation for this characteristic is, however, made difficult by the fact that comparative values for ΨL must be measured... -
Macadamia cultivar evaluation in Natal
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Allan --- Department of Horticultural Science, Republic of South AfricaVegetatively propagated macadamia cultivars were grown in six ecologically different areas in Natal. Nut quality was tested over a number of years. The warm, moist north coast area is best for most cultivars tested with Keaau, Ka'u, Kakea and Beaumont... -
A multivariate approach to a specific problem of grouping maize cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarieF. Smith --- , Republic of South AfricaThe use of multivariate techniques in the analysis of multivariate problems is illustrated by comparing the results of univariate and multivariate techniques applied to the problem of establishing the nutritional requirements of, and the acid tolerance differences between maize cultivars... -
Damage caused by Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) to various cultivars of grain sorghum, Sorghum bicolor (L.) Moench
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- Summer Grain Centre, Republic of South Africa J. B.J. van Rensburg --- Summer Grain Centre, Republic of South Africa K.L. Pringle --- Department of Entomology and Nematology, Republic of South AfricaGrain sorghum cultivars differed significantly in yield response to natural Chilo partellus infestations over a period two seasons. These differences were ascribed to cultivar characteristics of which differences in length of growing season requirements were the most important. Differences in... -
Registration of cotton (Gossypium hirsutum L.) cultivars Letaba, NIK2 and OR19
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. van Heerden --- , Republic of South Africa W.H. van Staden --- , Republic of South Africa G.W. Schoeman --- , Republic of South Africa M.E. Stone --- , Republic of South Africa G. S.P. Vink --- , Republic of South AfricaLetaba, NIK2 and OR19 were released for commercial cultivation in the R.S.A. in 1989. Letaba has potential as a dryland cultivar in the Springbok Flats and northern Natal. NIK2 is intended for cultivation under irrigation in the same areas and... -
Differensiële fitotoksisiteit van tralkoksidim, bromoksinil en 'n mengsei van die twee produkte op Suid-Afrikaanse koringcultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.H. Knobel --- , Republiek van Suid-Afrika B.L. de Villiers --- , Republiek van Suid-Afrika H.A. Smit --- , Republiek van Suid-Afrika R.C. Lindeque --- , Republiek van Suid-AfrikaTwee glashuisproewe en een veldproef is uitgevoer om die gevoeligheid van koringcultivars vir die wilde-haweronkruiddoder tralkoksidim, die breëblaaronkruiddoder bromoksinil en 'n mengsel van die twee te bepaal. Waar tralkoksidim teen dubbel die hoogste aanbevole dosisse met die benatter Addit(R) in... -
Identification of tall fescue grass cultivars by sodium dodecyl sulphate and acid polyacrylamide gel electrophoresis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R.E. Hierse --- , Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South Africa M. Bosman --- Department of Botany, Republic of South AfricaProtein banding patterns of seed obtained by sodium dodecyl sulphate Polyacrylamide gel electrophoresis (SDS-PAGE) or acid Polyacrylamide gel electrophoresis (A-PAGE) were used to distinguish between different tall fescue (Festuca arundinacea Shreb.) grass cultivars. An electrophoretic formula was determined for each... -
Analysis of the HMW glutenin subunit composition of wheat cultivare by SDS-PAGE
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: O.T. de Villiers --- Department of Botany, Republic of South Africa M. Bosman --- Centre for Cereal Research, Department of Agronomy and Pastures, Republic of South AfricaThe composition of the high-molecular weight (HMW) glutenin subunits of 13 wheat cultivars grown in the Western Cape was determined using Polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulphate (SDS-PAGE). The molecular weight of the different subunits was... -
A comparison between the linear regression and AMMI approaches to study multi-site trials using a sample of South African maize trials
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Falkenhagen --- , Republic of South Africa S.M. Funnah --- , Republic of South Africa W. du Toit --- , Republic of South AfricaGrain yield for 21 maize cultivars common to 10 localities and three harvesting seasons was used to compare the Finlay-Wilkinson and the additive main effects and multiplicative interaction (AMMI) methods of studying interactions in multi-site trials. Both methods showed variability... -
Effects of plant population density and cultivar on growth, yield and yield components in groundnut (Arachis hypogaea 1.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. J.P. Tarimo --- Department of Crop Science and Production, Tanzania F.P. Blarney --- Department of Agriculture, AustraliaAn experiment was conducted at the University of Queensland Redland bay Farm (27°37′ S, 153°17′ E) in southeast Queensland, Australia to study response of groundnut cultivars [Improved Virginia Bunch, NC-7, Q18801 (Virginia types), TMV-2, McCubbin and Red Spanish (Spanish types)]... -
The effect of plant population on the quality of sunflower seed for processing
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South Africa H.L. Loubser --- , Republic of South Africa P.S. Hammes --- Department of Plant Production and Soil Science, Republic of South AfricaAmong other disadvantages, low hullability of sunflower seed results in oil cake with a high fibre and low protein content. Hullability is known to increase with increased seed size. Seed size generally decreases with an increase in plant density. The... -
Sources of variation in spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. I. Milling and dough development characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Nel --- Department of Agronomy and Pastures, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa J.L. Purchase --- , Republic of South AfricaApproximately 90% of the annual wheat crop produced in the Republic of South Africa is milled into flour for bread-baking purposes. The percentage of flour extracted, as well as the dough development properties, determine the milling and dough mixing characteristics... -
Sources of variation in spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. II. Baking characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.M. Nel --- Department of Agronomy and Pastures, Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa J.L. Purchase --- , Republic of South AfricaProtein content and quality determine flour quality, as well as the success of bread-baking. The stability of wheat quality characteristics is of great importance to the milling and baking industry, who have to produce an end product of acceptable and... -
RAPD analysis of selected common bean (Phaseolus vulgaris L.) cultivars from three African countries
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C. M.S. Mienie --- , Republic of South Africa L. Herselman --- , Republic of South Africa R.E. Terhlanche --- , Republic of South AfricaDNA from six dry bean cultivars was analysed with a total of thirty two primers in RAPD analysis to develop a method to distinguish between the different cultivars. The varieties are cultivated in three African countries and belong to two... -
The use of Simple Sequence Repeats (SSRs) to identify commercially important potato (Solanum tuberosum L.) cultivars in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.E. McGregor --- , Republic of South Africa M.M. Greyling --- , Republic of South Africa L. Warnich --- Department of Genetics, Republic of South AfricaThe morphological traits that are traditionally used to identify potato cultivars are not always reliable, especially when dealing with in vitro plants. Various molecular marker techniques have been described for cultivar identification, but the Simple Sequence Repeat (SSR) technique has... -
Differential susceptibility of commercial zucchini cultivars to viruses of cucurbits
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.R. Cradock --- , Republic of South Africa J.V. da Graça --- , Republic of South Africa M.D. Laing --- , Republic of South AfricaA study to assess the effectiveness of some zucchini [Cucurbita pepo (L.)] cultivars in limiting the effects of virus disease in zucchini crops was conducted at Bayne's Drift, KwaZulu-Natal. The severity of disease was assessed using a visual rating scale... -
Development of a sequence characterized amplified region (SCAR) marker for the identification of the potato cultivars Astrid and Mnandi
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.S. Jansen van Rensburg --- , South Africa I.A. Dubery --- Department of Biochemistry, South AfricaAstrid and Mnandi are two closely related potato cultivars of commercial importance in Southern Africa. Random amplified polymorphic DNA (RAPD) markers were screened and a sequence characterized amplified region (SCAR) marker was developed to distinguish between these two cultivars since... -
Evaluation of petiole nitrate measurement as an aid for N fertilization of potatoes (Solanum tuberosum L.) on sandy soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.P. Brink --- Department of Agronomy and Pastures, N. J.J. Combrink --- Department of Agronomy and Pastures, F.H. Knight --- Department of Agriculture, Western Cape,Potatoes are produced in the Sandveld of the Western Cape on soils with extremely low clay and organic material contents. A low nitrogen mineralisation potential and high leaching hazard complicate the management of the nitrogen supply to the plant. This... -
Resistance in South African and foreign wheat cultivars to pathotypes 6E16A- and 6E22A- of Puccinia striiformis f. sp. tritici
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. H.P. Boshoff --- , Republic of South Africa Z.A. Pretorius --- Department of Plant Pathology, Republic of South Africa B.D. van Niekerk --- , Republic of South AfricaStripe rust, caused by Puccinia striiformis Westend. f. sp. tritici Eriks., has become an endemic disease of wheat (Triticum aestivum L.) in South Africa after being observed for the first time near Moorreesburg, Western Cape, during August 1996. The reaction... -
Comparisons of using fitted (calculated) and determined (measured) genetic coefficient G2 in CERES-Maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.S. du Toit --- , South AfricaGenetic coefficients reflect simulated differences in cultivar growth and development. These are not readily available for most South African maize cultivars. They could either be fitted or determined experimentally. This study showed that the determined values of genetic coefficients are... -
The South African Germplasm Collection of Groundnut, Arachis hypogaea L., and its utility
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.J. Cilliers --- , Republic of South Africa C.J. Swanevelder --- , Republic of South AfricaGroundnut is an important crop for both the commercial and developing farmer in South Africa, providing a source of plant protein and oil. Commercial production varies from 80 000 to 200 000 tons per annum. The only research institute in... -
Sorghum malting quality as affected by availability of suitable cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van Loggerenberg --- , A.J. Pretorius --- ,Malting quality of grain samples of commercially available malting class sorghum cultivars was determined over five seasons and three localities for each season. The number of cultivars included in the National Sorghum Cultivar Trials has declined in recent years. The... -
Release of Rambo, a new groundnut cultivar
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.J. Swanevelder --- , Republic of South Africa A.J. Cilliers --- , Republic of South Africa H. L.N. Joubert --- , Republic of South AfricaThe groundnut industry in South Africa has, for some time, been in need of a large kernel cultivar for both the kernel and pod confectionary market. The only available cultivars until now were Billy, a cultivar with a variegated testa,... -
Genetic relationships amongst macadamia varieties grown in South Africa as assessed by RAF markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.P. Peace --- , Australia P. Allan --- Discipline of Horticultural Science, South Africa V. Vithanage --- , Australia C.N. Turnbull --- Department of Agricultural Sciences, U.K B.J. Carroll --- , AustraliaMacadamia is an important horticultural crop of South Africa, and the major cultivars grown have a wide range of attributes. These cultivars originated from diverse backgrounds, but the genetic relationships between them are unclear. Here we describe new insights into... -
Determining milling performance of sorghum cultivars by means of abrasive decortication and roller milling techniques
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , Republic of South Africa G. Osthoff --- Department of Microbial, Biochemical and Food Technology, Republic of South Africa A.J. Pretorius --- , Republic of South AfricaAlthough roller milling has been successfully applied to produce sorghum meal, the South African sorghum milling industry mostly uses abrasive decortication milling. The first objective of this study was to develop a laboratory-scale roller milling technique for a scaled-down roller... -
Using canonical variate analysis to group small white bean cultivars canned in tomato sauce according to their canning quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , Republic of South Africa G. Osthoff --- Department of Microbial, Biochemical and Food Technology, South Africa A.J. Pretorius --- , Republic of South AfricaA laboratory-scale canning and evaluation method was employed to evaluate the canning quality of small white beans over cultivars, localities and seasons. Four small white bean cultivars, representing 15 localities from the 2001/02 season and six cultivars representing 17 localities... -
A canning quality model for small white bean lines selected for breeding (Phaseolus vulgaris L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , South Africa G. Osthoff --- Department of Microbial, 9300 South Africa A.J. Pretorius --- , South AfricaThe study aimed to validate canonical variate analysis (CVA) model equations for the grouping of small white beans according to canning quality by testing them on four cultivar samples of known canning quality (2000/01 season), and 24 breeding samples that... -
Effect of pruning on yield and quality of hydroponically grown cherry tomato (Lycopersicon esculentum)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. M. Maboko --- , South Africa C. P. du Plooy --- , South AfricaThe commercial importance of cherry tomatoes is continuously increasing in the South African retail market, with fruit size playing an important role. The effect of pruning on yield and quality of two cherry tomato cultivars (Naomi and Josefina) with an... -
An overview of the context and scope of wheat (Triticum aestivum) research in South Africa from 1983 to 2008
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. Smit --- , South Africa V.L. Tolmay --- , South Africa A. Barnard --- , South Africa J.P. Jordaan --- , South Africa F.P. Koekemoer --- , South Africa W.M. Otto --- , South Africa Z.A. Pretorius --- Department of Plant Sciences, South Africa J.L. Purchase --- , South Africa J.P.C. Tolmay --- , South AfricaThe domestic requirement for wheat in South Africa is approximately 2.8 million tons and annually the shortfall on local production is imported to meet the demand. During the past 25 years two distinct wheat marketing mechanisms characterised the wheat industry,... -
Screening of some South African maize (Zea mays L.) cultivars for acetochlor tolerance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Soil, South Africa P.M. Mphundi --- Department of Soil, South AfricaAcetochlor containing a safener is registered for pre-emergence use on maize to control mainly annual grasses. It is applied at rates of between 0.49 and 1.89 kg ai ha-~ on soils with a clay content from <10% to 55%. Some... -
Productivity evaluation of Medicago sativa cultivars under irrigation in a semi-arid climate
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Johann F Theron --- Free State Department of Agriculture, South Africa Hennie A Snyman --- Department of Animal, Wildlife and Grassland Sciences, South AfricaMany Medicago sativa cultivars are available in South Africa, each with unique characteristics. This study evaluated 26 cultivars under irrigation on two ecotopes in terms of number of cuttings, dry matter (DM) production, seasonal DM production curve, DM production curve... -
Identifying high-yielding dryland wheat cultivars for the summer rainfall area of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ernest Dube --- Agricultural Research Council–Small Grain Institute, South Africa Rorisang Mare-Patose --- Agricultural Research Council–Small Grain Institute, South Africa Willem Kilian --- Agricultural Research Council–Small Grain Institute, South Africa Annelie Barnard --- Agricultural Research Council–Small Grain Institute, South Africa Toi J Tsilo --- Agricultural Research Council–Small Grain Institute, South AfricaDrought is a major challenge to dryland wheat (Triticum aestivum L.) production in the summer rainfall area (SRA) of South Africa. Dryland wheat farming in the SRA is unique in that the crop is dry-planted on high-water-table soils in winter,... -
Sensitivity of selected dry bean (Phaseolus vulgaris L.) cultivars to mesotrione in a simulated carry-over trial
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: James Allemann --- Department of Soil, Crop and Climate Sciences, South Africa Johnny M Molomo --- Department of Soil, Crop and Climate Sciences, South AfricaMesotrione is used to control annual broadleaf weeds and grasses in maize, with waiting periods up to 24 months recommended prior to planting sensitive crops. The objectives of this study were to determine if selected dry bean cultivars exhibited differences... -
Nutrient intake, digestibility and rumen fermentation characteristics of sheep fed on selected forage sweet potato cultivars
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: R. Irungu --- Kenya Agricultural and Livestock Research Organization, Kenya P.K. Migwi --- Egerton University, Kenya J.N. Kariuki --- Kenya Agricultural and Livestock Research Organization, Kenya A.Y. Guliye --- Egerton University, Njoro, KenyaSelected forage sweet potato cultivars (Ipomoea batatas Lam) have superior forage characteristics, have high rates of regeneration after harvest, are able to smother weeds and can tolerate diseases and moisture stress. However, little information is documented on their feeding value... -
Growth and yield responses of commercial sugarcane cultivars to mulching in the coastal rainfed region of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nkosinathi Nxumalo --- South African Sugarcane Research Institute, South Africa Sanesh Ramburan --- South African Sugarcane Research Institute, South Africa J Martin Steyn --- Department of Plant Production and Soil Science, South AfricaThe perceived negative cultivar responses to mulching has limited the adoption of this practice in the South African sugarcane industry. This study was aimed at evaluating cane yield and quality responses and population dynamics of popular cultivars to mulching in... -
Genetic progress of spring wheat grain yield in various production regions of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Ernest Dube --- Agricultural Research Council–Small Grain Institute, South Africa Willem Kilian --- Agricultural Research Council–Small Grain Institute, South Africa Learnmore Mwadzingeni --- Discipline of Plant Breeding, School of Agricultural, Earth and Environmental Sciences, South Africa Nondumiso Z Sosibo --- Agricultural Research Council–Small Grain Institute, South Africa Annelie Barnard --- Agricultural Research Council–Small Grain Institute, South Africa Toi J Tsilo --- Agricultural Research Council–Small Grain Institute, South AfricaSuccessful wheat production depends on several informed production decisions, including availing stable and high yielding cultivars. Periodic evaluation of the genetic gains in grain yield is a means of determining the effectiveness of current breeding efforts in increasing wheat productivity... -
Preliminary retting research on different kenaf cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mathilda M van der Westhuizen --- Agricultural Research Council–Institute for Industrial Crops, South AfricaKenaf (Hibiscus cannabinus L.), a fibre crop, is a member of the Malvaceae family and related to cotton (Gossipium hirsutum L.) and okra (Abelmoschus esculentus (L.) Moench). Natural fibres have many advantages over synthetic fibres, such as light weight, low... -
A comparison of experimental designs for cultivar evaluations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Hae Saul --- , South Africa M Booyse --- , South Africa PA Swanepoel --- , South AfricaSpatial heterogeneity and the lack of clear or significant treatment responses in agricultural field experiments complicates recommending the most suitable cultivar(s) to producers for a specific area. Increased attention should be given to the experimental design of cultivar trials, as... -
Sugarcane cultivar genetic gains for coastal agro-ecological regions of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- South African Sugarcane Research Institute, South AfricaCultivar genetic gains quantify the increase in productivity from release of cultivars and measure genetic improvements from plant breeding. The objectives of this study were to evaluate the genetic gains from sugarcane coastal cultivars and evaluate their contribution to productivity... -
Genetic, breeding and environmental parameters for yellow sugarcane aphid (Sipha flava) damage in advanced South African sugarcane breeding populations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- South African Sugarcane Research Institute, South AfricaYellow sugarcane aphid (YSA), a native pest of temperate and subtropical regions in North America, has spread to many regions of the world including KwaZulu-Natal and Mpumalanga sugarcane growing regions of South Africa. Cultivar differences to YSA damage have been...