The silkworm variety “Jinxiu No. 3” bred by the Changsha Comprehensive Station of the National Sericulture System passed the national approval
On December 30, 2022, the Ministry of Agriculture and Rural Affairs issued Announcement No. 635. The breeding team of the Hunan Sericulture Science Institute and the germplasm innovation team of the Sericulture Research Institute of the Chinese Academy of Agricultural Sciences will work in the national sericulture industry. The silkworm variety “Jinxiu No. 3”, which is resistant to blood-type pyogenic disease and has universal spots, was jointly bred with the long-term support of the technical system project. No. 28). This variety is also the third pair continuously bred and approved by the state in the past three years by the Hunan Sericulture Research Institute relying on the “National Silkworm Improvement Center Changsha Branch” Technological Innovation platform Bombyx silkworm varieties are in a leading position among similar research institutions across the country.
This variety participated in the National Silkworm Variety Identification Test (Group A Autumn), which reflects the high yield index of cocoons produced by 10,000 silkworms (18.24Kg) and the cocoon produced by box species (35.09Kg). The robustness index starts from the fourth age. Silkworm pupa rate (97.69%) and healthy pupa rate (94.0%), cocoon silk quality indicators cocoon layer rate (22.19%), cocoon silk length (11186.0m), unwinding rate (80.41%), clarity (95.64 points ) and fresh hair cocoon silk production rate (17.37%) are better than the control variety “Qiufeng × Baiyu”, and the fresh hair cocoon silk production rate is more than 1 percentage point higher than the control variety. Silkworms from the fourth instar The evaluation results of pupa rate have refreshed the national evaluation record of summer and autumn silkworm varieties this time and all previous years since the founding of the People’s Republic of China. The cocoon yield of the box variety is 20.25% higher, the silk length is 184m, and the net unwinding rate is 5.61 percentage points higher. According to the BmNPV resistance identification test conducted by the Department of Applied Biology, School of Basic Medicine and Life Sciences, Soochow University, the half-lethal dose LD50 of “Jinxiu 3” is 2.92×109 polyhedrons/ml, which is significantly higher than the control variety “9·Fu×” The semi-lethal dose LD50 of “7·Xiang”.
This variety not only has excellent comprehensive economic traits, but also has fully limited markings that can eliminate the pupa identification process in silkworm breeding. Its resistance to blood-type sepsis can promote the stability of silkworm farming and increase farmers’ income. Its original parent “Dong·Ting×Bi·Bo” has been promoted over 13.92 million times in the summer and autumn of the Yangtze River Basin in my country. It is one of the 9 pairs of varieties with a cumulative sales volume of more than 10 million since the founding of the People’s Republic of China. The new variety has excellent resistance and silk quality. With breakthrough transformation, the characteristics of strong and easy-to-maintain, high and stable yields will be more prominent, and its promotion prospects will be broader. This variety has been tested and promoted in Huayuan, Daoxian, Hunan, Yibin, Sichuan and other places. It has shown strong disease resistance and high yield, and is suitable for summer and autumn promotion in the Yangtze River Basin and Yellow River Basin.
AAA
Disclaimer:
Disclaimer: Some of the texts, pictures, audios, and videos of some articles published on this site are from the Internet and do not represent the views of this site. The copyrights belong to the original authors. If you find that the information reproduced on this website infringes upon your rights and interests, please contact us and we will change or delete it as soon as possible.
AA
