Investigation of salt tolerance wheat Lines using yield stability indices
2005
Ranjbar, GH | Anagholi, A | Cheraghi, SAM
Wheat (Triticum aestivum L.) has been known as semi-salt tolerant crop. Wheat genotypes, however, show different responses under saline conditions. Therefore it is not always true, to categorize wheat as semi-salt tolerance. To investigate variation among some lines and cultivars of wheat under salinity conditions, an field experimental based on augmented design was conducted at Sadogh salinity Research Farm during 2003-2004. Controls were Kavir, Roshan and an elit line (DH4-209-1557F3-Vee"S"/Nac/1-66-22) that were replicated five times. Lines and cultivars were planted in two rows by 2.5 meter length, individually both in saline and non-saline conditions. At both conditions fields irrigated with non-saline water until wheat plants establishment. After this stage, at saline conditions plants irrigated with saline water (EC= 14 dS.m-1) throughout growing season. Results showed that in saline and non-saline condition there were wide variation among lines and cultivars based on grain yield, straw yield, hundred kernel weight and harvest indices. Grain yield variation range of lines and cultivars under saline condition was between 100 and 800 g/m2 but most lines and cultivars produced grain yield by 300-400 g/m2 in saline and 400-500 g/m2 in non saline conditions. Twenty percent lines and cultivars produced grain yield more than 500 g/m2 in saline condition. Finally, 88 lines and cultivars were selected based on high grain yield and yield stability in saline and non saline conditions.
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