Al-Juhaishi, M., Okaz, A., El-Hennawy, M., Zaazaa, E. (2020). Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجين لمحصول العلف والصفات المرتبطة الأخرى في محصول الشوفان. test, 11(10), 939-943. doi: 10.21608/jpp.2020.124282
M. O. H. Al-Juhaishi; A. M. A. Okaz; M. A. El-Hennawy; E. I. Zaazaa. "Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجين لمحصول العلف والصفات المرتبطة الأخرى في محصول الشوفان". test, 11, 10, 2020, 939-943. doi: 10.21608/jpp.2020.124282
Al-Juhaishi, M., Okaz, A., El-Hennawy, M., Zaazaa, E. (2020). 'Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجين لمحصول العلف والصفات المرتبطة الأخرى في محصول الشوفان', test, 11(10), pp. 939-943. doi: 10.21608/jpp.2020.124282
Al-Juhaishi, M., Okaz, A., El-Hennawy, M., Zaazaa, E. Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجين لمحصول العلف والصفات المرتبطة الأخرى في محصول الشوفان. test, 2020; 11(10): 939-943. doi: 10.21608/jpp.2020.124282

Combining Ability and Heterosis for Fodder Yield and Other Associated Traits in Oat (Avena sativa L.) القدرة على التآلف وقوة الهجين لمحصول العلف والصفات المرتبطة الأخرى في محصول الشوفان

Journal of Plant Production
Article 7, Volume 11, Issue 10, October 2020, Pages 939-943    PDF (950.99 K)
Document Type: Original Article
DOI: 10.21608/jpp.2020.124282
Authors
M. O. H. Al-Juhaishi* ; A. M. A. Okaz; M. A. El-Hennawy; E. I. Zaazaa
Agronomy Dept., Fac. of Agric., Al-Azhar Univ. Cairo, Egypt.
Abstract
Combining ability and heterosis studies were performed on half diallel mating. The basic material for the present study consisted of six diverse genotypes of oats viz: Alguda,  Anatolia, Kangaroo, ICARDA tall, Bihuth and Shifa'.15 F1 hybrids and their parents were grown in randomized complete block design with three replications. Observations were recorded on six quantitative traits. The analysis of variance revealed significant differences among the parents and their crosses for all the studied traits. The estimates of variance due to non-additive gene action (σ2D) was much higher than the corresponding additive genetic variance (σ2A) for all the traits under evaluation.Values of GCA effects revealed that ICARDA tall was found to be the best general combiner for biological yield amongst all the parents. It was also found to have significant positive GCA values for other traits. On the basis of significant SCA effects, hybrids ICARDA tall x Bihuth and Alguda x Bihuth recorded highest SCA effects for biological yield, also showed positive and significant SCA values for other traits. The F1 hybrids were showed the best specific combinations viz; Bihuth x shifa' for days to 50% heading and days to 75% maturity, Anatolia x Kangaroo for plant height at maturity,Anatolia x Bihuth for numbers of tillers. Highest significant and positive heterosis for biological yield was shown by F1 hybrid Alguda x Bihuth followed by ICARDA tall x Bihuth. These crosses combinations also exhibited highly values with positive and significant heterobeltiosis for two traits viz; plant height at maturity and growth rate.
Keywords
Avena sativa; Oat; Heterosis; GCA; SCA; Fodder yield
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