The new tussah varieties have been bred by selecting large,high quality and midterm based on the indexes of high cocoon shell rate and high stress resistance. In the meantime,whole cocoon weight,hatchability and other...The new tussah varieties have been bred by selecting large,high quality and midterm based on the indexes of high cocoon shell rate and high stress resistance. In the meantime,whole cocoon weight,hatchability and other economic parameters were considered in new variety breeding. Through 14 generations of hybrid breeding for over 7 years,two new tussah varieties had been successfully obtained. The breeding results of DW were as follows: the 1 000-cocoon weight was11. 57 kg; the whole cocoon weight was 12. 06 g; the cocoon shell rate was 12. 22%; and the larval-pupal integrated survival rate was 95. 87%. The breeding results of GH were as follows: the 1 000-cocoon weight was 11. 52 kg; the whole cocoon weight was 11. 95 g; the cocoon shell rate was 12. 66%; and the larval-pupal integrated survival rate was 90. 37%.展开更多
基金Supported by China Agricultural Industry Research System(CARS-22)Science and Technology Project of Jilin City(201122303)
文摘The new tussah varieties have been bred by selecting large,high quality and midterm based on the indexes of high cocoon shell rate and high stress resistance. In the meantime,whole cocoon weight,hatchability and other economic parameters were considered in new variety breeding. Through 14 generations of hybrid breeding for over 7 years,two new tussah varieties had been successfully obtained. The breeding results of DW were as follows: the 1 000-cocoon weight was11. 57 kg; the whole cocoon weight was 12. 06 g; the cocoon shell rate was 12. 22%; and the larval-pupal integrated survival rate was 95. 87%. The breeding results of GH were as follows: the 1 000-cocoon weight was 11. 52 kg; the whole cocoon weight was 11. 95 g; the cocoon shell rate was 12. 66%; and the larval-pupal integrated survival rate was 90. 37%.
