The effect of NaCl on water relations,chlorophyll, and protein and proline contents of two cultivars of blackgram (Vigna mungo L.) |
| |
Authors: | M Ashraf |
| |
Institution: | (1) Institute of Pure and Applied Biology, Bahauddin Zakariya University, Multan, Pakistan |
| |
Abstract: | The physiological basis of salt tolerance of two cultivars of blackgram, cv Candhari Mash (relatively salt tolerant) and cv
Mash 654 (salt sensitive), was assessed in salinized sand culture at the flowering stage. Increasing NaCl concentration in
the rooting medium significantly reduced the chlorophyll a, chlorophyll b, and total chlorophyll, leaf water potential (Ψw), leaf solute potential (Ψs), and leaf turgor potential (Ψp) in both the cultivars. Leaf protein and proline content was increased as a result of increasing salt concentration in both
cultivars. High salt concentrations had no significant effect on the seed protein content of both cultivars. At high salinities,
cv Candhari Mash had significantly greater chlorophyll a, chlorophyll b and total chlorophyll, leaf water potential, solute
potential, and turgor potential than cv Mash 654, but the latter had greater leaf proline content than cv Candhari Mash. Cultivars
did not differ significantly for both leaf and seed protein contents.
The relatively salt tolerant cv Candhari Mash maintained high leaf water potential and turgor potential to resist salt injury.
Leaf proline content had negative correlation with salt tolerance in blackgram. |
| |
Keywords: | chlorophyll NaCl tolerance proline Vigna mungo water relations |
本文献已被 SpringerLink 等数据库收录! |
|