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Estimating Phenotypic and Genotypic Path Coefficient, an Application on Wheat (Triticumaestivum L.) Genotypes
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Abstract: Two field experiments were carried out during two seasons; 2014/2015 and 2015/2016 at two locations ; Agricultural Research Stations , Itay-Elbarood and KafrElhamam.This work aimed to estimate the variations among six genotypes through estimates of genotypic and phenotypic variances (Vg and Vph), genotypic and phenotypic coefficient of variation (GCV and PCV), broad sense heritability and genetic advance as well as study the interrelationships among grain yield attributers using genotypic and phenotypic correlation and path coefficients analysis.The experiments were conducted in a randomized complete block design with three replications in the field. Results proved that Gemmeiza-7 and Gemmeiza-10 cultivars were the best yielding among the studied cultivars and the KafrElhamam location was the top yielding than the other location (Itay-Elbarood). Estimates of heritability in broad sense for the studied characters at the two locations Itay-Elbarood and KafrElhamam were varied from; 47 - 99% and 23 - 99%, respectively. Results showed large values of broad-sense heritability (hb2) coupled with high values of genetic advance as a percent of mean (GA %) selection intensity for number of spikes/plant and plant height at the two locations. Positive and significant genotypic and phenotypic correlation was found between yield and No. of tillers per plant in both locations. Data of path coefficients analysis (at genotypic and phenotypic levels) at the two locations Itay-Elbarood and KafrElhamam showed that the traits i.e. No. of tillers/plant, No. of spikelets/ spike and No. of spike per plant had the highest effect directly and indirectly upon yield indicating their magnitude as selection criteria to obtain a valuable gain of selection for yield in wheat.
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| Publication year |
2022
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| serial title |
المجلة الدولية لعلم الأحياء الدقيقة والعلوم التطبيقية الحالية
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| Publication Type |
Journal
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