Improvement and Optimization of Three Molting Silkworm Varitety"Shuxi 1"for Robustness and Fineness
The parents P061 and H102 of the three molting silkworm variety"Shuxi 1",known for their ro-bustness and fine denier size,were improved using directional selection methods such as moth plots,individual selection,and reeling cocoon alive over multiple generations in order to optimize silkworm varieties.The analysis of the results showed that the knot and number of breakdowns P061 and H102 decreased by 81.61%and 53.37%,38.14%and 54.17%,respectively compared with the control,and the cocoon length increased by 22.67%and 12.78%,respectively;Regardless of whether it was in spring or autumn,the cocooning rate,co-coon layer rate of parents P061 and H102 all increased to different degrees.The percentage of common cocoons,cocooning rate,cocoon layer rate,cocoon filament length and neatness of"Shuxi 1"in spring and autumn in-creased by 1.40%and 0.76%,1.12%and 1.39%,3.91%and 3.88%,10.03%and 8.07%,respectively.The results indicate that the directional selection of moth area,individual selection,reeling cocoon alive play an important role in maintaining and improving the excellent traits of silkworm varieties,thereby achieving the goal of improving and optimizing silkworm varieties.
Three molting silkwormVariety improvementReeling cocoon aliveKnotsCocoon filament length
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万方数据
