Field bean [physiology of yield and adaption in tropical fields]
1983
Laing, D.R. | Kretchmer, P.J. | Zuluaga, S.
Common bean (Phaseolus vulgaris L.) is an important world crop with relatively low productivity in most cropping systems. Physiological factors influencing yield and adaptation are discussed with respect to field research in the tropics. The comparative sub-optimal canopy development leading to lower yield potentials. Leaf area development is dependent on the basic nodal structure as is the potential sink. Increases in nodal structure led to increase in both source and sink and consequently yield. The species is comparable to soybean in terms of various efficiency parameters (yield per unit leaf area duration, harvest index, and yield per day of growth cycle) and differences in crop growth rate are proportional to difference in leaf area. Water stress tolerance and specific adaptation to temperature extremes have been identified in the species. The results of photoperiod response evaluations appear to have future application in predicting phenological responses
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