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A preliminary study of the pollen of Mangifera indica L. cv. Haden in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Esmé de Wet --- , Republic of South-Africa P.J. Robbertse --- , Republic of South-AfricaThe effect of temperature and light intensity on the dehiscence of anthers of Mangifera indica L. cv. Haden and on the in vitro germination, stainability and viability of mango pollen grains was studied. Pollen of two mango cultivars grown in... -
Anatomy of staminate flower ontogeny of the pecan as determined by scanning electron microscopy
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South AfricaA new method of investigation for hard winter buds of the pecan [Carya illinoensis (Wang.) K. Koch] was developed and used successfully. The development of pecan catkins under summer rainfall conditions at Roodeplaat followed the grouping of cultivars according to... -
The influence of temperature and boron on pollen germination in Mangifera indica L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Esmé de Wet --- , Republic of South Africa P.J. Robbertse --- , Republic of South Africa H.T. Groeneveld --- Department of Statistics/Plant Production, Republic of South AfricaFruit set in the mango (Mangifera indica L.) cultivar ‘Haden’ is exceptionally low. In an effort to determine the reason for this phenomenon, the influences of temperature and application of boron on pollen germination and the effectiveness of cross- versus... -
An evaluation of two collections of South African maize (Zea mays L.) germ plasm: 1. The genetic basis of the synchronization of pollen shedding and silk emergence
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B. de Jager --- Department of Genetics, C.Z. Roux --- Department of Genetics, H.C. Kühn --- ,Pollen shed-silking synchronization for a cultivar was measured by the interval between the dates on which 50% of the plants exhibited anthers and the dates on which 50% of the primary ears exhibited extruded silks. Under drought stress silking may... -
Reproductive biology of the critically endangered tropical tree Talbotiella gentii
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Daniel Dompreh --- Department of Plant and Soil Science, UK Michael D Swaine --- Department of Plant and Soil Science, UK Christopher C Wilcock --- Department of Plant and Soil Science, UKTalbotiella gentii is a critically endangered caesalpiniaceous legume endemic to Ghana, restricted in distribution to the margins of the forest zone where there has been extensive fire damage in recent decades. It occurs as isolated, near-monospecific populations, some of which... -
Relative merits of using purified proteins and natural foods in studies of wildlife nutrition: the nitrogen requirements of a rodent pollinator
Item type: Journal Article • Journal: African Zoology • Authors: Ian G. Van Tets --- Department of Zoology, South Africa Ken Hutchings --- Department of Zoology, South Africa Susan Nicolson --- Department of Zoology, South AfricaAethomys namaquensis is a 60 g murid rodent that is an important pollinator of several Protea species in South Africa. We compared the nitrogen requirements of this species on two different protein sources: pollen and casein. Pollen is an important...