Priming effect of auxin and gibberellic acid on some quantitative and qualitative characteristics bean plant (Phaseolus vulgaris L.) under salt stress

Subject Areas :

Mojtaba  Aghebat Bekheir Golfrani ¹ (M.Sc. of Agronomy, Department of Agriculture, Islamic Azad University, Varamin Branch, Varamin, Iran)
Farshad  Ghooshchi ² (Assistant Professor of Agronomy, Department of Agriculture, Islamic Azad University, Varamin Branch, Varamin, Iran.)
meysam  oveysi ³ (Assistant Professor of Agronomy, Department of Agriculture, Islamic Azad University, Varamin Branch, Varamin, Iran.)

Received: 2015-05-10 Accepted : 2015-10-24 Published : 2014-11-22

Keywords: auxin, Gibberellic acid, priming, Salt stress, red beans,

Abstract :

In order to evaluate the effect of auxin and gibberellic acid priming on some quantitative and qualitative characteristics bean plant (Phaseolus vulgaris L.) in terms of soil salinity project in the laboratory and greenhouse Shnasy- Physiology, Islamic Azad University of Varamin rector in 1393 was performed. Plan factorial in a completely randomized design with three replications and 48 treatments were performed. The factors studied included hormone actions (lack of hormones, 50 ppm auxin, 50 ppm gibberellic acid, 25 ppm and 25 ppm gibberellic acid auxin) and salinity concentrations (0, 30, 60, 90 mM NaCl) was. In the house the best treatment of the interaction of auxin foliar application of 25 ppm with 25 ppm gibberellic acid in the absence of stress, so that in these conditions the maximum yield was 325 grams per square meter and the same minimum yield due to lack of hormone treatment with 90 mM NaCl salinity, which amounted to 113 grams per square meter, respectively. Most proline micromoles per gram fresh weight of leaf by leaf 7/60 in 90 mM NaCl, with no spraying and the lowest 5.25 micromoles per gram fresh weight of leaf leaf proline to the use of 25 ppm and 25ppm GA in terms of auxin lack of salinity (zero mM NaCl) was obtained. Most of the water content relative to the amount of 7/62 of the treatment of stress (zero mM NaCl) with 25 ppm and 25 ppm auxin and gibberellic least 9/37 of the water content of the non-application of maximum salt spray of the hormone in the 90 mM, respectively. The main effects and interaction of salinity and hormonal priming at 1 and 5 percent on grain yield, total chlorophyll content, relative water content, proline and electrical conductivity were significant. In this experiment, it was found that with increasing salinity levels remain functional attributes of pits chlorophyll and relative water content decreased also in part due to the actions of hormones sprayed incur bean plant was under stress.