Comparison of some physiological responces to salinity and normal conditions in Sugar Beet

ABSTRACT

This study was carried out in the Agricultural Research Center of West Azerbaijan, Iran in 2016. In this research, variations in different physiological and yield traits measurement of total dry weight, shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, relative water content, relative water loss, root length, leaf area, root/shoot ratio, specific leaf weigh, sodium content, potassium content and proline were investigated in normal and saline condition. The results indicated that in saline condition, total dry weight, root fresh weight, shoot dry weight, root/Shoot ratio, specific leaf weight, root length, proline and Na content were increased and the other traits were decreased. Study of correlation of traits showed that most significant difference between the two conditions was observed for the root/shoot ratio, so that, this trait has negative significant relation with total dry weight, shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, relative water content, leaf area, root length, specific leaf weight in saline condition, but in normal condition correlation is positive and significant only in the total dry weight, root fresh weight, shoot dry weight and root dray weight and was not significant in the other traits. Step-wise regression analysis for total dry weight as dependent variable revealed that in normal condition, root fresh weight, shoot fresh weight and Na content expound of 93.1% and in saline condition root fresh weight, root length, Na content and proline explicate of 81.3% of total variation exist in total dry weight. Therefore, it is suggested to consider different traits in breeding programs for normal and saline conditions.

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Comparison of some physiological responces to salinity and normal conditions in Sugar Beet

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