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ANBAR JOURNAL OF AGRICULTURAL SCIENCES

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Genetic parameters and path analysis in bread wheat as effected by seeding rates

    H. J. Hamadi

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2008, Volume 6, Issue 1, Pages 74-90

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Abstract

A field experiment was conducted at the farm AL Sofia place in Ramadi during 2004–2005 and 2005–2006, seasons. Arandomized complete block design in a split plot design with eight varieties (IPA 95, IPA 99, Abu-Ghraib3, Al-fateh, sale, shaam6, Tamoz3, Al-Rashed) as main plots and three sedding rates (100, 150 and 200 kg/ ha) as sub plots with three replication. Genotypic, phenotypic variances and coefficient of variability, broad sence heritability percentage, genotypic and phenotypic correlation coefficient and other characters were estimated. path coefficient analysis carried out to partition the genotypic correlation coefficient to the direct and Indirect effects. The results showed that genotypic, phenotypic variances and coefficients of variability were varied with seeding rates. Genotypic variances more than Ecological variances for all characters in two seasones.
Phenotypic correlation coefficients was more than genotypic correlation coefficient for number of spikes/ m2, number of grain/ spikes and spike length for two seasones. The higher values for broad sence heritability appeared in biological grain/ spike (99.9, 99.8) for two seasones.
Path analysis revealed that biological grain for all seeding rates and two seasones obtained highest direct to grain yield, while length spike had the most positive direct and indirect effects. It was cocluded that biological grain could be used as selection index for the improvement of grain yield in bread wheat.
Keywords:
    analysis bread Wheat seeding
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(2008). Genetic parameters and path analysis in bread wheat as effected by seeding rates. ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 6(1), 74-90.
H. J. Hamadi. "Genetic parameters and path analysis in bread wheat as effected by seeding rates". ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 6, 1, 2008, 74-90.
(2008). 'Genetic parameters and path analysis in bread wheat as effected by seeding rates', ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 6(1), pp. 74-90.
Genetic parameters and path analysis in bread wheat as effected by seeding rates. ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2008; 6(1): 74-90.
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