【摘 要】
：
Twelve paternal half-sib families and 36 full-sib families were cultivated through the hierarchical genetic mating design,and 7 traits of 15-month-old 4 320 individuals were measured.Predicated upon t
【机 构】
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Fisheries College of Guangdong Ocean University,Zhanjiang 524025,China
【出 处】
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中国工程院第77场工程科技论坛·2008水产科技论坛
论文部分内容阅读
Twelve paternal half-sib families and 36 full-sib families were cultivated through the hierarchical genetic mating design,and 7 traits of 15-month-old 4 320 individuals were measured.Predicated upon the additive-dominance genetic analysis model,varying genetic variance components and in turn heritabilities of the growth-related traits of interest were estimated by way of restricted maximum likelihood procedure.The standard error of varying estimators was derived through Jackknife method.Results showed that 7 growth-related traits had larger additive genetic variances(P ＜ 0.05);the dominance genetic variance of shell weight was smaller(P ＞ 0.05),the dominance genetic variances of other 6 traits were all larger(P ＜ 0.05).Narrow-sense and broad-sense heritabilities for the 7 traits were respectively:0.64 ± 0.10 and 0.78 ± 0.12 for shell length(SL),0.49 ± 0.06 and 0.63 ± 0.09 for shell height(SH),0.38 ± 0.14 and 0.54 ± 0.16 for shell breadth(SB),0.41 ± 0.17 and 0.56±0.11 for hinge length(HL),0.53 ± 0.11 and 0.68 ± 0.08 for body weight (BW),0.35 ±0.07 and 0.55 ± 0.08 for tissue weight(TW),0.67 ±0.10 and 0.75 ± 0.16 for shell weight(SW).All heritability estimates were statistically significant(P ＜ 0.05).According to these results,the individual selection procedure was suggested for the breeding of P.martensii.
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