PATH ANALYSIS OF RELATIONSHIPS BETWEEN TRAITS AFFECTING GRAIN YIELD IN BREAD WHEAT GENOTYPES

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MORADIYAN P.; KAZEMI ARBAT H.; REZAYI MORAD ALI M.

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Journal: JOURNAL OF RESEARCH IN CROP SCIENCES Year:2013 | Volume:6 | Issue:21 Page(s): 73-87

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Title

PATH ANALYSIS OF RELATIONSHIPS BETWEEN TRAITS AFFECTING GRAIN YIELD IN BREAD WHEAT GENOTYPES

Author(s)

MORADIYAN P. | KAZEMI ARBAT H. | REZAYI MORAD ALI M. | Issue Writer Certificate

Keywords

GENETIC VARIATIONQ2

MULTIVARIATE ANALYSISQ2

THE PROMISING LINESQ2

WHEAT BREADQ2

Abstract

To investigate the relationships between grain yield and some characteristics affecting the yield performance, an experiment was conducted in the 11 lines of winter wheat (Triticum aestivum L.) with 4 cultivars (Oroum, Zareh, Mihan and Zarrin) in completely randomized block design with three replications in research station of Miyandoab in 2010-2011. Analysis of variance showed that there were significant differences among all traits except of peduncle weight. Most lines studied, such as lines 5, 10, 11, 13, 14 and 15 with the mean grain weight had an average of 34/68 mg, lines 5 and 15 with an average of 4/698 pcs had more number of spikes per square meter, the greatest height with an average of 92.85 cm allotted to lines 4 and 9, the highest average spike weight, were allotted to lines 3, 9, 14, 4 and 6, the highest percentage HI, with an average of 06.42%, were allotted to lines 3, 11 and 14. Golden figure of the average yield of 8078 kg per hectare gave the highest grain yield. The correlation results showed that grain yield with plant height (r= 0.56*) and spike weight (r= 0.56*) had positive and significant correlation. The results of regression analysis 90.2 % of the variation in grain yield through plant height, number of spikelet per spike, grain weight per spike, spike weight, spike length and harvest index were justified. Based on the path analysis traits such as plant height (1.41), weight of spikes (1.95) and HI (0.93) as the most effective and positive direct effect on grain yield traits, and spike grain weight (-1.47), the largest negative effect on spike length (-0.57), had the least negative impact. Thus it can be concluded that traits under study can be used in breeding programs to select promising and high yielding wheat genotypes.

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APA: Copy

MORADIYAN, P., KAZEMI ARBAT, H., & REZAYI MORAD ALI, M.. (2013). PATH ANALYSIS OF RELATIONSHIPS BETWEEN TRAITS AFFECTING GRAIN YIELD IN BREAD WHEAT GENOTYPES. JOURNAL OF RESEARCH IN CROP SCIENCES, 6(21), 73-87. SID. https://sid.ir/paper/167972/en

Vancouver: Copy

MORADIYAN P., KAZEMI ARBAT H., REZAYI MORAD ALI M.. PATH ANALYSIS OF RELATIONSHIPS BETWEEN TRAITS AFFECTING GRAIN YIELD IN BREAD WHEAT GENOTYPES. JOURNAL OF RESEARCH IN CROP SCIENCES[Internet]. 2013;6(21):73-87. Available from: https://sid.ir/paper/167972/en

IEEE: Copy

P. MORADIYAN, H. KAZEMI ARBAT, and M. REZAYI MORAD ALI, “PATH ANALYSIS OF RELATIONSHIPS BETWEEN TRAITS AFFECTING GRAIN YIELD IN BREAD WHEAT GENOTYPES,” JOURNAL OF RESEARCH IN CROP SCIENCES, vol. 6, no. 21, pp. 73–87, 2013, [Online]. Available: https://sid.ir/paper/167972/en

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