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:: Volume 32, Number 1 (spring 2016) ::
3 2016, 32(1): 99-118 Back to browse issues page
Evaluation of Grain Yield of Cultivars and Promising Lines of Grain Sorghum [Sorghum bicolor (L.) Moench] Using of Drought Tolerance Indices
A. Khazaei, A. Sabouri , Z. Shobbar, M. Shahbazi
Abstract:   (324 Views)

To evaluate drought tolerance in cultivars and promising lines of grain sorghum, an experiment was conducted as split-plot on randomized complete block design with three replications at experimental field of Seed and Plant Improvement Institute, Karaj, Iran in 2013 and 2014. Irrigation treatments were considered the main plot at three levels: irrigation after 60 mm evaporation from the surface evaporation pan (normal irrigation), normal irrigation till flowering and then irrigation after 120 mm evaporation (mild water stress), and water withholding after flowering (severe water stress). Were considered as main plot and five genotypes including cultivars Kimiya and Sepideh and promising lines KGS15, KGS23 and KGS32 as subplot. The results of combined analysis of variance showed that fresh fodder, biological yield and grain yield in irrigation treatments and genotypes for all traits had significant differences at 1 level of probability. Based on Stress Tolerance Index (STI) and Geometric Mean Productivity (GMP) indices, KGS23 line and Kimiya cultivar had higher grain yield than mean in all irrigation treatments. These genotypes had also the highest STI and located at zone of high yield potential and low sensitivity to drought in the biplot. Results of biplot analysis and correlation between drought tolerant indices and Ys and Yp showed that STI, GMP and MP were the best indices for selection of the suitable genotypes in drought stress conditions.

Keywords: Grain sorghum, stress tolerant indices, grain yield, biplot
Full-Text [PDF 333 kb]   (306 Downloads)    
Type of Study: Research | Subject: Agronomy (production)
Received: 2016/10/10 | Accepted: 2016/10/10 | Published: 2016/10/10
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A. Khazaei, A. Sabouri, Z. Shobbar, M. Shahbazi. Evaluation of Grain Yield of Cultivars and Promising Lines of Grain Sorghum [Sorghum bicolor (L.) Moench] Using of Drought Tolerance Indices. 3. 2016; 32 (1) :99-118
URL: http://sppj.spii.ir/article-1-545-en.html
Volume 32, Number 1 (spring 2016) Back to browse issues page
مجله به‌زراعی نهال وبذر Seed and Plant Production Journal
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