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Early selection of bread wheat genotypes using morphological and photosynthetic attributes conferring drought tolerance

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Journal of Integrative Agriculture 2019年第11期18卷 2483-2491页

作者： hafiz ghulam muhu-din ahmed Abdus Salam khan LI Ming-ju Sultan Habibullah Khan Muhammad Kashif Department of Plant Breeding and Genetics University of Agriculture FaisalabadFaisalabad 38000Pakistan Institute of Agricultural Environment and Resources Yunnan Academy of Agricultural SciencesKunming 650205P.R.China Center of Agricultural Biotechnology and Biochemistry University of Agriculture FaisalabadFaisalabad 38000Pakistan

Genetic diversity is the base of any genetic improvement breeding program aimed at stress *** variability among breeding materials is of primary importance in the achievements of a good crop ***,105 wheat genotypes were screened against drought stress using factorial completely randomized design at seedling stage to determine the genetic diversity and traits association conferring drought *** of variances revealed that all the studied parameters differed significantly among all genotypes,indicating the significance genetic variability existed among all genotypes for studied *** 10 best performance genotypes G1,G6,G11,G16,G21,G26,G39,G44,G51,and G61 were screened as drought tolerant,while five lowest performance genotypes G3,G77,G91,G98,and G105 were screened as drought *** length,chlorophyll a,chlorophyll b,and carotenoid contents were significantly correlated among themselves which exhibited the importance of these indices for rainfed areas in future wheat breeding *** length exhibited non-significant and negative association with other studied traits,and its selection seems not to be a promising criteria for this germplasm for drought *** performance genotypes under drought stress conditions will be useful in future wheat breeding program and early selection will be effective for developing high yielding and drought tolerant wheat varieties.

关键词： drought photosynthesis chlorophyll wheat seedling carotenoid

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