THE COMPARISON OF LOGISTIC, SEGMENTEDAND LINEAR REGRESSION MODELS IN ESTIMATION OF GRAIN FILLING DURATION AND GRAIN FILLING RATE OF SOME WHEAT CULTIVARS

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MORADI MOHAMMAD; SOLTANI HOVEYZEH MAHDI

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Journal: CROP PHYSIOLOGY Year:2009 | Volume:1 | Issue:3 Page(s): 60-70

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Title

THE COMPARISON OF LOGISTIC, SEGMENTEDAND LINEAR REGRESSION MODELS IN ESTIMATION OF GRAIN FILLING DURATION AND GRAIN FILLING RATE OF SOME WHEAT CULTIVARS

Author(s)

MORADI MOHAMMAD | SOLTANI HOVEYZEH MAHDI | Issue Writer Certificate

Keywords

LOGISTIC CURVEQ3

GRAIN FILLING RATEQ3

GRAIN FILLING DURATIONQ3

FINAL GRAIN WEIGHTQ3

Abstract

Final grain weight a component of grain yield in wheat (Triticum sativa L), is dependent on the rate and duration of the grain filling process. A thorough understanding of the grain filling process maybe helpful in attempts to breed for increased yield and early maturity in wheat. This study was conducted to evaluated ten wheat cultivars, at Research Farm, College of Agriculture, Islamic Azad University Shushtar Unit, in 2004-5. A randomized complete block design with four replications was conducted. The LOGISTIC CURVE provided a good fit to the grain filling data obtained in this study. Rate and duration of grain filling were obtained from the fitted curve. Cultivars differed significantly in GRAIN FILLING RATE, GRAIN FILLING DURATION and FINAL GRAIN WEIGHT. Correlation coefficient between FINAL GRAIN WEIGHT and GRAIN FILLING RATE was highly positive. But the phenotypic correlation between the GRAIN FILLING RATE and GRAIN FILLING DURATION was not significant and suggested that there was no genetic association between these characteristics. Results suggested that it should be possible to simultaneously improve GRAIN FILLING RATE and FINAL GRAIN WEIGHT without lengthening duration of grain filling. Since the result of linear and logistic models justified more meaningfully the physiological processes of the plant, it was recommended to use these equations in estimation of rate and duration of grain filling.

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APA: Copy

MORADI, MOHAMMAD, & SOLTANI HOVEYZEH, MAHDI. (2009). THE COMPARISON OF LOGISTIC, SEGMENTEDAND LINEAR REGRESSION MODELS IN ESTIMATION OF GRAIN FILLING DURATION AND GRAIN FILLING RATE OF SOME WHEAT CULTIVARS. CROP PHYSIOLOGY, 1(3), 60-70. SID. https://sid.ir/paper/174400/en

Vancouver: Copy

MORADI MOHAMMAD, SOLTANI HOVEYZEH MAHDI. THE COMPARISON OF LOGISTIC, SEGMENTEDAND LINEAR REGRESSION MODELS IN ESTIMATION OF GRAIN FILLING DURATION AND GRAIN FILLING RATE OF SOME WHEAT CULTIVARS. CROP PHYSIOLOGY[Internet]. 2009;1(3):60-70. Available from: https://sid.ir/paper/174400/en

IEEE: Copy

MOHAMMAD MORADI, and MAHDI SOLTANI HOVEYZEH, “THE COMPARISON OF LOGISTIC, SEGMENTEDAND LINEAR REGRESSION MODELS IN ESTIMATION OF GRAIN FILLING DURATION AND GRAIN FILLING RATE OF SOME WHEAT CULTIVARS,” CROP PHYSIOLOGY, vol. 1, no. 3, pp. 60–70, 2009, [Online]. Available: https://sid.ir/paper/174400/en

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