Hormones-induced modifications in the response of wheat flag leaf to NaCl
1995
Aldesuquy, H.S. (Mansoura Univ. (Egypt). Dept. of Botany)
A field experiment was carried out to investigate the effect of presoaking the wheat grains in 33 or 66 mM NaCl and indolyl-3-acetic (IAA at 50 g m-3), gibberellic acid (GA3 at 100 g m-3) on some tolerance criteria in wheat flag at different stages of development. At various stages of flag leaf development pretreatment with 33 or 66 mM NaCl decreased degree of succulence (particularly 66 mM), relative growth rate, net assimilation rate, relative water content, K+/Na+ ratio and at the same time induced accumulation of abscisic acid and Na+. In the majority of cases grain pretreatment with GA3 or kinetin and to a lesser extent with IAA alleviated either partially or completely the deleterious effect of salinity of the above mentioned parameters.
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