Volume 5, Issue 16 (9-2015)
2015, 5(16): 109-121 |
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Pourdehghan M, Modarres-Sanavi S A M, Ghanati F, Karami S. Effects of Hexaconazole on Quantitative and Qualitative Characteristics of Two Soybean Cultivars under Water Deficit Stress Conditions. Journal of Crop Production and Processing 2015; 5 (16) :109-121
URL: http://jcpp.iut.ac.ir/article-1-2366-en.html
URL: http://jcpp.iut.ac.ir/article-1-2366-en.html
Tarbiat Modares University, Tehran , modaresa@modares.ac.ir
Abstract: (4575 Views)
In order to investigate the effect of Hexaconazole (HEX) on quantitative and qualitative characteristics of two soybean (Glycine max L.) cultivars under water deficit stress, an experiment was conducted in the Faculty of Agriculture of Tarbiat Modares University in the year 2010-2011 as a factorial experiment in randomized complete block design arrangement. Factors examined in this study were soybean cultivars (L17 and Clark63), HEX concentration (0 and 35 mg/L) and water deficit stress levels (optimum irrigation and water deficit stress based on depletion of 60% of available soil moisture). Chlorophyll content, Fv/Fm, seed yield, yield components, biological yield, harvest index, protein and oil percentage of seeds were investigated. Results showed that water deficit stress and HEX application had significant effect on the most of traits and the cultivars showed different responses to the treatments. In both water treatments, HEX increased the yield of both cultivars but under water deficit stress increase in seed yield of L17 (35.99%) was higher than Clark63 (14.53%) in comparison with non- HEX application. Among the effective factors on seed yield, number of pods per plant had the highest share in the seed yield. Under water deficit condition, seed protein percent of Clark63 increased (6.14%) in response to HEX treatment but in L17 the content of protein was not affected by HEX. Oil percentage of seeds was not affected by any of the treatments. In both cultivars, HEX increased resistance to water deficit stress and the cultivars showed different responses to HEX treatment and under water deficit the yield response of L17 to HEX was more notable, although this combination improved the grain quality of clark63.
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