TY - JOUR JF - JSTNAR JO - jwss VL - 5 IS - 1 PY - 2001 Y1 - 2001/4/01 TI - Estimation of Genetic Parameters in Some Important Traits of Silkworm (Bombyx mori L.) TT - برآورد مشخصه های ژنتیکی چند صفت مهم در کرم ابریشم (Bombyx mori L.) N2 - This experiment was conducted to estimate genetic parameters of some of the important traits of silkworm in two populations, namely, Japanese and Chinese lines in Iranian Silkworm Rearing Co-Natanz. Based on single pair mating method, 9 male moths mated with 9 female moths and then raised under standard environmental conditions. Performance of 30 progenies of each pair was recorded. Heritability coefficients (parental full-sib method) of single cocoon weight (CW), shell weight (SW), pupal weight (PW) and shell ratio (SR) were estimated to be 0.209±0.123, 0.228±0.129, 0.174±0.109 and 0.044±0.042 in the Japanese race and 0.196±0.1l8, 0.234±0.132, 0.159±0.103 and 0.00, in the Chinese race, respectively. Genetic and phenotypic correlation between CW & SW were 0.645 & 0.957, CW & PW, 0.962 & 0.982, CW & SR -0.351 & 0.123, SW & PW, 0.496 & 0.871, SW & SR, 0.265 & 0.457, PW & SR, -0.446 & 0.169, respectively. Selection, based on heritability coefficients of single cocoon weight and shell weight, can be applied successfully to genetic-gain in this trait. Based on correlation coefficients between traits, selection for shell weight can be applied successfully to improve other traits such as single cocoon weight and shell ratio. SP - 199 EP - 205 AU - Talebi Esfandarani, M. AU - Edriss, M.A. AU - Ebadi, R. AD - KW - Silkworm KW - Bombyx mori L. KW - Heritability KW - Genetic and phenotypic correlation. UR - http://jstnar.iut.ac.ir/article-1-235-en.html ER -