STUDY ON CORRELATION OF TRAITS AND COMPONENTS AFFECTING GRAIN WEIGHT AND DETERMINATION OF EFFECT OF SOME PHYSIOLOGICAL PARAMETERS ON GRAIN YIELD IN SPRING WHEAT GENOTYPES UNDER OPTIMUM AND DROUGHT STRESS CONDITIONS

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NADERI A.; HASHEMI DEZFOULI S.A.A.H.; REZAEI A.; MAJIDI HERAVAN E.; NOURMOHAMMADI GHORBAN

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Journal: Seed and Plant Year:2000 | Volume:16 | Issue:3 Page(s): 374-386

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Title

STUDY ON CORRELATION OF TRAITS AND COMPONENTS AFFECTING GRAIN WEIGHT AND DETERMINATION OF EFFECT OF SOME PHYSIOLOGICAL PARAMETERS ON GRAIN YIELD IN SPRING WHEAT GENOTYPES UNDER OPTIMUM AND DROUGHT STRESS CONDITIONS

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Keywords

WHEATQ3

REDISTORIBUTIONQ3

CURRENT PHOTOSGNTHESISQ2

BIOLOICAL YIELDQ2

GRAIN GROWTH RATEQ4

Abstract

An experiment was conducted in order to study the effective components on grain weight and effects of some physiological parameters on grain yield of spring WHEAT genotypes under optimum and post - anthesis drought stress conditions. Sixteen genotypes were studied in eight replications. Four replications were irrigated regularly but in other four replications no irrigtion was applied from anthesis to physiological maturity. Grain yield (GY) as well as the amount, percentage and contribution of remobilization, retranslocation, and redistribution were determined in different treatments. The contribution of current photosynthesis was calculated based on main sources which provide grain weight. Photosynthesis to redistribution ratio, biological yield (BY), harvest index (HI), GRAIN GROWTH RATE (GGR), effective grain filling period (EFP) and stress tolerance index (STI) were also determined. Results showed that correlations of grain weight with BY and GGR were positive and highly significant, while correlation between GGR and EFP was negative and highly significant. Under optimum and stress conditions, correlation between remobilization and current photosynthesis and under stress condition, correlation between remobilization and retranslocation were negative and highly significant. Only HI was significantly correlated with STI in stress condition2. Stepwise regression analysis revealed that BY and HI were the most Important components of grain weight. Correlation analysis based on all data showed that current photosynthesis and remobilization were the most effective physiological parameters of grain weight.

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APA: Copy

NADERI, A., HASHEMI DEZFOULI, S.A.A.H., REZAEI, A., MAJIDI HERAVAN, E., & NOURMOHAMMADI, GHORBAN. (2000). STUDY ON CORRELATION OF TRAITS AND COMPONENTS AFFECTING GRAIN WEIGHT AND DETERMINATION OF EFFECT OF SOME PHYSIOLOGICAL PARAMETERS ON GRAIN YIELD IN SPRING WHEAT GENOTYPES UNDER OPTIMUM AND DROUGHT STRESS CONDITIONS. SEED AND PLANT, 16(3), 374-386. SID. https://sid.ir/paper/20339/en

Vancouver: Copy

NADERI A., HASHEMI DEZFOULI S.A.A.H., REZAEI A., MAJIDI HERAVAN E., NOURMOHAMMADI GHORBAN. STUDY ON CORRELATION OF TRAITS AND COMPONENTS AFFECTING GRAIN WEIGHT AND DETERMINATION OF EFFECT OF SOME PHYSIOLOGICAL PARAMETERS ON GRAIN YIELD IN SPRING WHEAT GENOTYPES UNDER OPTIMUM AND DROUGHT STRESS CONDITIONS. SEED AND PLANT[Internet]. 2000;16(3):374-386. Available from: https://sid.ir/paper/20339/en

IEEE: Copy

A. NADERI, S.A.A.H. HASHEMI DEZFOULI, A. REZAEI, E. MAJIDI HERAVAN, and GHORBAN NOURMOHAMMADI, “STUDY ON CORRELATION OF TRAITS AND COMPONENTS AFFECTING GRAIN WEIGHT AND DETERMINATION OF EFFECT OF SOME PHYSIOLOGICAL PARAMETERS ON GRAIN YIELD IN SPRING WHEAT GENOTYPES UNDER OPTIMUM AND DROUGHT STRESS CONDITIONS,” SEED AND PLANT, vol. 16, no. 3, pp. 374–386, 2000, [Online]. Available: https://sid.ir/paper/20339/en

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