Study of tewenty-six genotypes of cultivated barley(Hodeum Vulgare L.) for salinity tolerance by measurement Na+ and K+ Cations
الموضوعات : Journal of Plant ecophysiology
غلامعباس محمدی
1
,
محمدرضا بهرامجردی
2
1 - گروه زراعت، واحد جیرفت، دانشگاه آزاد اسلامی، جیرفت، ایران
2 - گروه زراعت، واحد جیرفت، دانشگاه آزاد اسلامی، جیرفت، ایران
الکلمات المفتاحية: Grain yield, Salinity, barley, Plant traits,
ملخص المقالة :
Salinity stress is one of the most important abiotic stresses that affects the cultivation of agricultural plants in large areas of the country every year.Twenty-six genotypes of cultivated barley collected from Iran were compared for salt tolerance. Plants were grown in 2Kg pots and subjected to three salinity(NaCl) treatmentsand (1.2 ,8.9 and 16.7ds/m) in a greenhouse at jiroft. The expriment was done in a factorial with complete randomized design and three replications.During vegetative growth shoot Na+ ,K+ contents were measured for all genotypes.Plant traits including the plant height ,length of spikes ,number of spikes per plant ,fresh weight and dry matter and grain yield per plant were also measured.There was a very wide variation in salt tolerance of the genotypes with regard to Na+ and K+ contents.In general tolerant genotypes with better agronomic performance contained lower Na and a higher amount of K to non-tolerant ones and these two parameters were significantly and negatively correlated(r=-0.71,p<0.01).
