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유약호르몬류(JHA)처리에 대한 누에 장려 원종 및 교잡종 간의 감수성 비교
설광열,홍성진,성수일 한국잠사학회 1995 한국잠사곤충학회지 Vol.37 No.2
The effect of juvenile hormone analogue(JHA, Manina) on larval feeding duration, pupationratio, cocoon weight, and cocoon shell weight in the present commercial parent and hybridsilkworm stocks were investigated. Topical applications of JHA on parent silkworm stocks were to prolong larval duration, but results of response on those stocks were not consistent.Especially the JHA on Jam 121, Jam 123 and Jam138 did not play a role in larval duration, whereas that on Jam 114 was most effective in prolongation more than two days, compared with the controls. Subsequent prolongation of feeding duration resulted in increased of cocoon weight and cocoon shell weight of most parent silkworm stock, while Jam 114 showed decrease in cocoon weight and cocoon shell weight in spite of prolonged feeding duration of two days. Unlike the parent silkworm stocks, durations of feeding period in all hybrid silkworm stocks were prolonged about one day. Treatments of JHA on the hybrid stocks gave rise to increase of cocoon weight and cocoon shell weight, and especially were most effective in Sasung-jam,Eunbaek-jam and Samgwang-jam. Altought treatments of JHA seemed have no harmful effect on physiology of parent silkworm stocks as well as that of hybrid stocks, the JHA retared ratio of some parent silkworm stocks such as Jam 122, 131,135 and 138 by about 10%.