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Influence of temperature and daylength on the phenological development of annual Medicago species with particular reference to M. truncatula, cv. Jemalong
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.M. van Heerden --- Department of Agriculture,In a glasshouse and two growth-room trials, carried out in conjunction with 12 serial plantings in pots in the open, it was found that the phenological development of Medicago truncatula, M. tornata, M. aculeata, M. polymorpha, M. scutellata and M... -
Voorspelling van die aanpassingsvermoë van koringkultivars gebaseer op daglengte- en vernalisasiereaksie
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.D. Joubert --- ,Die koue- en daglengtereaksies van koringkultivars in groeikaste is ondersoek as aanduiding van die produksiegebiede waar die betrokke kultivars sal aanpas. Die resultate toon dat die 24 koringkultivars wat ondersoek is, uiteenlopende koue- en daglengtereaksies vertoon. Klassifikasie van die kultivars... -
Refinement and validation of the PUTU wheat crop growth model 1. Phenology
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Department of Agrometeorology, Republic of South Africa J.M. de Jager --- Department of Agrometeorology, Republic of South AfricaThe phonological submodel of the PUTU wheat crop growth model was refined to account for the variation in sensitivity to vernalization and photoperiod. Crop development rate was simulated in five phenological phases making use of temperature and photoperiod. Base values... -
Witloof chicory (Cichorium intybus L.) root vernalization by means of exogenously supplied gibberellic acid
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R. König --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaEndogenous gibberellic acid (GA) is known to play a pivotal role in the vernalization process of plants requiring a cold induction. In order to establish the effect of an exogenous GA application on the vernalization process of chicory roots, GA...