Combining ability and heterosis for fodder yield and other associated traits in oat (Avena sativa L.) [electronic resource].

By: Contributor(s): Language: English Summary language: Arabic Description: p. 939-943Other title:
  • القدرة على التآلف وقوة الهجين لمحصول العلف والصفات المرتبطة الأخرى في محصول الشوفان [Added title page title]
Uniform titles:
  • Mansoura university journal of plant protection and pathology, 2020 v. 11 (10) [electronic resource].
Subject(s): Online resources: In: Mansoura University Journal of Plant Protection and Pathology 2020.v.11(10)Summary: 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 (?2D) was much higher than the corresponding additive genetic variance (?2A) 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
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Includes reference.

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 (?2D) was much higher than the corresponding additive genetic
variance (?2A) 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

Summary in Arabic.

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