Title of article :
Evaluation of triticale genotypes for salt tolerance using physiological traits
Author/Authors :
Salehi, Maryam isfahan university of technology - College of Agriculture - Department of Agronomy and Plant Breeding, اصفهان, ايران , Arzani, Ahmad isfahan university of technology - College of Agriculture - Department of Agronomy and Plant Breeding, اصفهان, ايران
From page :
277
To page :
283
Abstract :
Salinity is one of the major constraints to plant production worldwide. The effect of terminal salinity on the physiological traits of 18 triticale (X. triticosecale) lines comprising nine doubled haploid (DH) and nine corresponding advanced lines (F8) and two bread wheat cultivars (control) was investigated under field conditions. Salt-stressed experiment was irrigated using saline water with EC = 16 ds m-1 from mid-jointing growth stage (Zadoks 43) onward. Na^+ concentration, K^+/Na^+ ratio, Ca^2+/Na^+ ratio, chlorophyll content, carotenoids content, proline content and grain yield were assessed. A high correlation coefficient (r=0.84**) was obtained between K^+/Na^+ ratio and grain yield under saline field conditions. The results also revealed an inverse and significant relationship between grain yield loss due to salinity with K^+/Na^+ ratio, proline and carotenoids content under saline stress provided evidence supporting the role of K^+/Na^+ ratio in salinity tolerance. F8 line number 6 possessed the highest values for carotenoids content, Ca^2+/Na^+ ratio and proline content as well as the least Na^+ concentration under salt-stressed conditions, accompanied by having the least grain yield loss due to salinity, was ranked this line as superior salt-tolerant genotype.
Keywords :
Physiological traits , Salt tolerance , X. triticosecale
Journal title :
Emirates Journal of Food and Agriculture
Journal title :
Emirates Journal of Food and Agriculture
Record number :
2645208
Link To Document :
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