| 家蚕新杂交种经济性状的杂种优势效应 |
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| 作者单位： | Silkworm Seed Technology Laboratory，Carmalra-Post，Kodathi，BANGALORE-560 035，39 M，G Road，United Mansions，Central Silk Board，BANGALORE 560001，INDIA |
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| 摘 要： | 为了选出经济性状优良的杂交组合,本试验对家蚕杂种优势在７个重要经济性状上的效应进行了研究。试验采用新配制的１０个多化性家蚕杂交种为材料,以当地种Ｎｉｓｔａｒｉ为对照,在适宜和非适宜季节环境中饲养。结果表明,所有杂交种在蚕茧产量上表现出的杂种优势最强。适宜季节条件下饲养的Ｓｌ５×Ｇ和非适宜季节条件下饲养的Ｇ×Ａ—２５在所有７个经济性状上均显著地（Ｐ＜０．０５）优于对照种。
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| 关 键 词： | 杂种优势 经济性状 杂交种 |
HETEROSIS EFFECT ON ECONOMIC TRAITS IN NEW HYBRIDS OF THE SILKWORM BOMBYX MORI(L) |
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| Authors: | Tribhuwan Singh and G Subba Rao |
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| Abstract: | In the present study heterotic effect of some of the most important quantitative traits during both favourable and unfavourable seasons in ten multivoltine hybrlds obtained from crossing al-ready established promising genotypes of the silkworm Bomlyx mori was worked out over indigenous race Nistari(Control)with the aim to select out the most prospective ones for the inclusion in competi-tive and productive testing at commercial level.Among the characteristics studied highest extent of het-eros is was observed for cocoon yield in all the hybrids during both seasons,The hybrids l5 × G during favourable and G ×A-25 during unfavourable season have shown significantly(P<0.05)better per-formance over cont rol for all the seven economic traits understudy. |
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| Keywords: | Heterosis Economic trait Hybrid |
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