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Wheat cultivars of diverse origin were tested against different salinity levels in laboratory as well as in naturally saline fields in different ecological zones. Ten Genotypes were studied for germination test at 6 different salinity levels ranging from 0-25 dSm-1 (2, 5, 10, 15, 20, 25, EC= dSm-1 ). Then were studied for the relative growth rate at different levels of salinity and after their study in the laboratory, were tested in the naturally saline areas of Punjab province. Under germination percentage study, the varieties viz. NR243, Sarsabz, Sarcc-3 and Sarcc-6 were found less affected than other varieties. As regards the relative plant growth, varieties viz. Sarcc-3, NR-243 and Sarsabz were tolerant to salinity at seedling stage while Inqlab was graded as sensitive to salt stress. Regarding field performance, significant differences were observed in the varieties grown under different saline environments and varieties x environment interaction. Varieties x environment (Lin) interaction was non significant. Based on overall yield performance, the Sarcc3 genotype produced the highest seed yield (2.969 t/ha) followed by NR-243 (2.624 t/ha) and Sarcc-6 (2.587 t/ha). Regression coefficient values showed non significant differences to unity while standard deviation to regression also showed significant differences to zero. These results indicated that the genotypes viz. SArcc-3, NR-243 and Sarcc-6 are better tolerant to saline environment as compared to others.
Yousuf Ali and J. Akhter. (2006) SCREENING AND SELECTION FOR ADAPTATION OF WHEAT GENOTYPES IN NATURALLY SALT-AFFECTED SOILS, , Volume 3, Issue 4.
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