PJB-2019-394
YIELD AND YIELD COMPONENTS OF WHEAT VARIETIES AS AFFECTED BY SALINITY AND SEED PRIMING
AttaUllah Khan
Abstract
To assess the salinity tolerance, an experiment was conducted on Yield and yield components of wheat varieties as affected by salinity and seed priming. Salt stress treatments of 0, 3, 6 and 9 dSm-1 was given to the six wheat varieties viz. Pirsabak-05,Lalma-13, Atta-Habib-10,Pirsabak-08, Saleem-00 and Inqilab-91. The primed (50 mM CaCl2) and un-primed seeds of these varieties were grown in soil culture. Results of experiment revealed that salinity exposed wheat varieties revealed significant improvement in yield and yield determining parameters of wheat varieties due to seed priming. However, seed priming indicated non-significant influence on spike length (cm) and grains spike-1 (g). VarietyPirsabak-05 was superior among all tested wheat varieties, in term of maximum productive tillers plant-1 (3.27), hundred grains weight (3.20 g), spike length (8.16 cm), grains spike-1 (43.19), grain yield (4.57 g plant-1), harvest index (35.95%) and lowest root Na+ content (2.33 mg g-1 dry weight). Highest root K+ content (0.66 mg g-1 dry weight) content was recorded from variety Lalma-13. Therefore, it is suggested that salt stress is detrimental for all wheat varieties. However, the priming treatment helped the tolerant variety (Pirsabak-05) to maintained higher yield and yield components in stressful condition.
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