Growth and yield response of wheat genotypes to salinity at different growth stages

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Research Paper 01/08/2017
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Growth and yield response of wheat genotypes to salinity at different growth stages

Md Saleh Uddin, Nasrin Jahan, Muhammad Ziaur Rahman, Kazi Md Wayaz Hossain
Int. J. Agron. Agri. Res.11( 2), 60-67, August 2017.
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Growth and yield response of wheat genotypes to salinity were studied at Regional Agricultural Research Station, Rahmatpur, Barisal to find out the performance of the genotypes at three growth stages with different salinity levels and to assess the relationship of growth and yield with three growth stages. This experiment performed in a three-factor experiment comprising six genotypes, five doses of salinity (control, 4, 8, 12, 16 dS/m) and three growth stages: vegetative, heading and pod filling . Results revealed that genotype, salinity level and growth stages exhibited highly significant variation for yield and its components. Control was the most appropriate environment in attaining higher yield followed by 4 and 8dS/m salinity level. Tolerance of wheat increased after heading 60stages and salt sensitivity of wheat is more in heading stages which is identical with vegetative stage. Grain yields were greatly decreased with salinity increase and the decreases differed depending upon the tolerance of genotype. The yield reduction was observed in G33, a tolerant genotype was 33 % at 16 dS/m and in G45, a susceptible genotype was 106%. Vegetative and heading stages were the most affected stage than grain-filling stage when treated with NaCl salinity.


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