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English :
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analysis of yield and its components using diallel matings among five parents of faba bean
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Arabic :
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التحليل للمحصول ومكوناته باستخدام الهجن التبادلية لخمسة آباء من
الفول البلدى
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| Abstract |
A diallel cross excluding reciprocals among five parents of faba bean (Giza 843, Sakha2, Giza2, Triple white and x – 1468) was used to estimate the heterotic effect of F1 crosses, combining ability and genetic components for yield and its variables viz: pods, seeds/plant and 100 – seed weight. Analysis of variance indicated highly significant differences among the entries for all the characters. Heterosis over mid and better parents, was highly significant for number of pods, seeds and seed yield/plant. Also highly significant mid-parent heterosis for number of branches/plant was observed. Heterosis over mid parents was, on average 19.95 % for number of branches/plant to 61.24 % for number of pods/plant. On the other hand, heterosis over better parent ranged from 5.22 % for plant height to 87.63 % for number of pods/plant. The two parents: Giza 843 (P1), Sakha 2 (P2) showed substantial and highly significant positive general combining ability (gca) effects for 100-seed weight, seed yield/plant. Meanwhile,Giza 2 (P3) and Triple white (P4) had highly significant positive (gca) effects for number of pods and seeds/plant. On the other hand, the two parents Sakha 2 (P2) and X -1468 (P5) recorded highly significant positive (gca) effects for plant height and 100-seed weight, respectively. Two crosses (Giza 843 x X -1468) and (Giza 2 x X Triple white) had significant specific combining ability (sca) effects for number of pods, seeds and seed yield/plant. The ratio of gca/sca revealed the preponderance of additive gene action for all characters except plant height. The regression coefficient was close and not significant from unity, indicating absence of epistasis for all studied traits and revealed simple additive gene action system controlling these traits. D component was less than H1 for plant height, number of pods, seeds and seed yield/plant, indicating the importance of dominance genetic variance. Narrow sense heritability ranged from 51.44 % for number of branches/plant to 87.99 % for 100-seed weight.
Key words: Faba bean, Heterosis, Combining ability, Heritability
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| Publication year |
2006
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| Pages |
1-12
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| Availability location |
معهد بحوث المحاصيل الحقلية 9- شارع الجامعة- الجيزة
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| Availability number |
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| Organization Name |
Field Crops Research Institute (FCRI)
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| serial title |
المجلة المصرية لتربية النبات
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| Author(s) from ARC |
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| Agris Categories |
Agriculture - General aspects
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AGROVOC
TERMS |
Diallel analysis.
Faba beans.
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| Publication Type |
Journal
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