NDLI: Evaluation of Drought Tolerance Indices for Screening Bread Wheat Genotypes in End-season Drought Stress Conditions

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Evaluation of Drought Tolerance Indices for Screening Bread Wheat Genotypes in End-season Drought Stress Conditions

Content Provider	Semantic Scholar
Author	Dadbakhsh, Alireza Sepas, Amir Yazdan
Copyright Year	2011
Abstract	In order to determine the best index and also identifying the best drought-resistant wheat genotypes, 19 bread wheat genotypes were planted and evaluated in a randomized complete blocks design with three replications. The experiment was conducted in two separate trials testing of normal irrigation and drought stress, which in the drought stress treatments, there was no double irrigation after anthesis. Results of variance analysis of yield in two conditions showed that there was no meaningful difference between under study genotypes for grain yield in non-stressed conditions, while it was observed that there is a meaningful difference between under-study genotypes in drought stress conditions in probability level of 5%. Principal components analysis decreases eight under-study indices into two components. Correlation analysis between yield in two environments and indices and also graphical biplot based on components showed that the most appropriate indices to identify genotypes were geometric mean productivity index (GMP), mean proficiency (MP) and stress tolerance index (STI). Genotypes 19, 2 and 18 were placed on good area of biplot, so the above mentioned genotypes has less yield fluctuation in different environmental conditions and were introduced as stress tolerant genotypes.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.aensiweb.com/old/aeb/2011/1040-1045.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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