Author(s):

SB Amarshettiwar and PB Berad

Abstract: The investigation was undertaken in the research field of wheat research unit, Dr. PDKV, Akola (M.S), during the Rabi season of 2014-15 and 2015-16. In order to study the biochemical and yield responses of wheat (Triticum aestivum and Triticum durum) at different dates of sowing, an experiment laid out in factorial randomized block design replicated thrice. The experiment comprised of two dates of sowing i.e. 17^th November and 11^th December with seven wheat genotypes namely AKAW-4627, AKDW-4021, AKAW-3722, AKW-1071, NIDW-295, AKAW-3997 and AKAW-4210-6. Among biochemical traits studied, Starch content in leaves was significantly reduced under late sown condition (2.93%) in comparison to normal sown condition (3.73%) at 60 DAS, The reduction in starch content was up to 21.46% due late sown condition at heading stage. Proline (µg g^-1) at flag leaf stage was significantly increased under late sown condition (36.94) in comparison to normal sown condition (34.31). The per cent increase in proline content was up to 7.76% due late sown condition at flag leaf stage. There was reduction (5.78%) in MSI caused due to late sowing in wheat at anthesis stage. Among yield traits, reduction caused due to heat stress i.e. productive tillers^-1 m² (21.10%), Grain yield (g) spike^-1 (10.07%) and Grain yield ha^-1 (21.12%). Among wheat Genotypes AKAW-4210-6 proved superiority in yield i.e. 42.45 and 37.81 qt ha^-1 respectively, under normal and heat stress condition. On the basis of yield stability index genotypes AKAW-4627 (0.90) found superior followed by AKAW-4210-6 (0.89) and AKAW-3722 (0.87).

Pages: 2663-2666  |  1267 Views  322 Downloads

Download (363KB)