Assimilate producction and partitioning during seed filling in lanceolate and ovate soybean isolines

MILLET F; QUIJANO A; BIANCHI JS; BAGGIO DD ; MORANDI EN; CERIATTI CD; ALESANDRELLI LA

Rosario

Congreso; XVIII Congreso y XXXVI Reunión Anual de la Sociedad de Biología de Rosario; 2016

Sociedad de Biología de Rosario

In previous works, we informed higher seed number per square meter (SN) in lanceolate (L) than in ovate (O) soybean isolines, and that this increase in SN was directly associated to yield. Sustaining the growth of more seeds and yield increase would require higher assimilate production and partitioning to the seeds during the seed filling period (SF). To investigate this hypothesis, a field experiment wa s performedduring the 2015/16 growing season, using a pair of L (FV35-L) and O (FV35-O) isolines. Yield was 11% higher for L than for O isolines (5870 and 5194 Kg/Ha, for L and O, respectively), and this was directly associated to the increase in SN (3792 and 3068, for L and O, respectively; P