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بررسی تاثیر انتخاب بوسیله شاخص بر پیشرفت ژنتیکی و عملکرد فنوتیپی صفات اقتصادی 6 لاین تجاری کرم ابریشم ایران و هیبریدهای حاصل از آنها

نوع محتوی: طرح پژوهشی
Language: Persian
استان موضوع گزارش: گیلان
شهر موضوع گزارش: رشت
Document National Code: R-1070186
Publish: 16 February 2019
دسته بندی علمی: علوم کشاورزی
View: 210
Pages: 44
Publish Year: 1385

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بررسی تاثیر انتخاب بوسیله شاخص بر پیشرفت ژنتیکی و عملکرد فنوتیپی صفات اقتصادی 6 لاین تجاری کرم ابریشم ایران و هیبریدهای حاصل از آنها abstract

In order to achieve genetic improvement in the Japanese lines (107, 101433 and Xinhang1) and Chinese lines (110, Y & Koming1), economic traits of cocoon weight, cocoon shell weight and cocoon shell percentage were individually recorded during 8 generations, and three-trait index selection programme was performed. Population genetic parameters were estimated using REML method after collecting information in the successive generations with identified relationship among relatives. Additive genetic improvement and genetic-economic improvement were estimated after additive genetic values of animals were predicted uding BLUP method. Economic values of traits were derived by standard method using a deterministic model with respect to production and economic circumstances of cocoon in Iran. Effect of index selection in lines on hybrid performance was evaluated by comparing performance of hybrids 110107ا, Xinhang1اKoming1 and 101433اY (and their reciprocals) in three groups of control (3P), selected and non-selected hybrids. A S-form curve was observed for mean additive genetic values of cocoon traits and mean genetic-economic values, and a sinus one for additive genetic and genetic-economic gains in all the lines. Results obtained from this study showed that index selection in the lines had a significant effect on improving production performance of silkworm hybrids. Therefor, it is necessary to use selection index procedure in breeding programmes of commercial silkworm lines in order to produce 2P eggs.

بررسی تاثیر انتخاب بوسیله شاخص بر پیشرفت ژنتیکی و عملکرد فنوتیپی صفات اقتصادی 6 لاین تجاری کرم ابریشم ایران و هیبریدهای حاصل از آنها Keywords:

بررسی تاثیر انتخاب بوسیله شاخص بر پیشرفت ژنتیکی و عملکرد فنوتیپی صفات اقتصادی 6 لاین تجاری کرم ابریشم ایران و هیبریدهای حاصل از آنها authors