University of Tehran perss Journal of Crops Improvement 2008-8337 17 4 2015 12 22 Response of different castor ecotypes to drought stress under Isfahan and Shahrekord climates Response of different castor ecotypes to drought stress under Isfahan and Shahrekord climates 1015 1033 55148 10.22059/jci.2015.55148 FA Pejman Nikneshan Ph.D. Student, Department of Agronomy, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran Ali Tadayyon Associate Professor, Department of Agronomy, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran Mohammad Rafiolhosseini . Assistant Professor, Department of Agronomy, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran 0000-0002-8413-7404 Babak Bahraininejad Assistant Professor, Department of Natural Resourses, Agricultural and Natural Resources Research Center of Isfahan, Isfahan, Iran. Journal Article 2015 01 10 <strong>In respect to drought crisis in the center of Iran, it needs valuable crops which adapt to such environments, a field experiment was conducted to investigate the effects of drought stress on different castor ecotypes at two places (Isfahan and Shahrekord) in 2013. Experiment was carried out in split plot arrangement in randomized complete block design (RCBD) with three replications that four drought stress levels (non-stress equals 30, 45, 60 and 75 percent moisture depletion soil) as a main plot and six castor ecotypes (’Isfahan ‘, ’Ardesrtan ‘, ’Arak ‘, ’Naeen ‘, ’Yazd ‘ and ’Ahvaz‘) as a subplot in two mentioned places. The results from both experiments were analyzed by combined analysis. The measured traits were including plant height, leaf number per plant, LAI, capsule number per plant, seed number per plant, 100 seeds weight, grain yield, harvest index, oil percent and oil yield. The results showed that the highest seed yield and oil yield were related to ’Isfahan‘ ecotype in Isfahan region under control with 1388 and 673 kg/ha, respectively. </strong><br /><strong> </strong> <strong>In respect to drought crisis in the center of Iran, it needs valuable crops which adapt to such environments, a field experiment was conducted to investigate the effects of drought stress on different castor ecotypes at two places (Isfahan and Shahrekord) in 2013. Experiment was carried out in split plot arrangement in randomized complete block design (RCBD) with three replications that four drought stress levels (non-stress equals 30, 45, 60 and 75 percent moisture depletion soil) as a main plot and six castor ecotypes (’Isfahan ‘, ’Ardesrtan ‘, ’Arak ‘, ’Naeen ‘, ’Yazd ‘ and ’Ahvaz‘) as a subplot in two mentioned places. The results from both experiments were analyzed by combined analysis. The measured traits were including plant height, leaf number per plant, LAI, capsule number per plant, seed number per plant, 100 seeds weight, grain yield, harvest index, oil percent and oil yield. The results showed that the highest seed yield and oil yield were related to ’Isfahan‘ ecotype in Isfahan region under control with 1388 and 673 kg/ha, respectively. </strong><br /><strong> </strong> https://jci.ut.ac.ir/article_55148_cd58e476e49c7958764137dd91e4a253.pdf