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강필돈 ( Pil Don Kang ),김기영 ( Kee Young Kim ),성규병 ( Gyoo Byung Sung ),김미자 ( Mi Ja Kim ),지상덕 ( Sangduk Ji ),권해용 ( Hae Yong Kweon ),박광영 ( Kwang Young Park ),손봉희 ( Bong Hee Shon ) 한국잠사학회 2012 한국잠사곤충학회지 Vol.50 No.1
A new silkworm variety SooOkJamfor spring rearing season is F1 hybrid between Jam157, a japanese race bred from introduction breeding and Jam158, a chinese race from introduction breeding. In the local adaptability test performed at 8 local areas in spring of 2011, the hatchability rate of SooOkJam was recorded 2% higher than the authorized silkworm variety, DaePoongJam. The larval period was recorded 12 hour shorter than DaePoongJam. The pupation percentage was recorded 0.8% higher than DaePoongJam. Single cocoon weight (2.40 g), Cocoon yield (22.6 kg) and best cocoon rate (95.5%) was similar to DaePoongJam. The concentration of DNJ was measured 4.12 mg in SooOkJam, lower than DaePoongJam (4.45 mg). Test of the artificial diet of SooOkJam showed excellent adaptability of the artificial diet for larval period from 1st to 3rd, similar to KumOkJam. In the Paecilomyces tenuipes production ability test, the pupal weight of SooOkJam was 1.61 g/individual, similar to DaePoongJam (1.65 g/individual).