Phenology and biomass distribution pattern in two varieties of common bean (Phaseolus vulgaris L.)

Abstract

In Mexico, bean crop is one of the most important agricultural resources to provide food also for its economic value as product. However, there is a lack of research related with Phaseolus vulgaris varieties, specifically for plants cultivated for human consumption as common bean pods. It was characterized the main phenological events and the biomass distribution in two different varieties “Black Valentine” (BV, green pod) y “Black Wax” (BW, yellow pod) of common bean. For each variety it was chosen 4 plants and every 10 days after planting (DAP) from each organ emerged the fresh and dry weight and the leaf area were recorded. Then, at 7, 14 , 21 , 28 and 35 days after anthesis (DAA) the growth, fresh and dry weight and nitrogen content were evaluated from pods (n=10) of each variety of common bean. During the first 30 DAP the dry weight accumulation in both varieties was correlated with leaf area. The beginning of flowering and fruit growth was an important factor in the source-sink relationship. Differences were not noted in the final fresh and dry weight of the pods between “BV” and “BW” varieties.