PJB-1994-39
PARTITIONING OF ASSIMILATES DURING VEGETATIVE STAGES OF THE FOUR VARIETIES OF WHEAT
BUSHRA NOSHIN, IMTIAZ-UL-HAQ AND PAIGHAM SHAH
Abstract
Four varieties of wheat viz., C591, C273, Pak-81 and Pirsabak-85 partitioned different proportions of assimilates to the different organs having different functions. Varieties C591 and C273 grew taller, reached anthesis stage earlier and partitioned more assimilates to stem and less to spike and leaves tiling in smaller spikes, while Pak-81 and Pirsabak-85 partitioned more assimilates to spikes and leaves thus they had larger spikes than the tall varieties. Upto anthesis the 4 varieties produced about the same total biomass indicating that Pak-81 and Pirsabak-85 had lower net assimilation rate since their total green leaf areas were greater than C591 and C273.
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