【摘要】 利用大黄鱼野生群体与选育F1养殖群体杂交及群体内自繁,获得选育F1(♀)×野生(♂)、野生(♀)×选育F1(♂)、野生(♀)×野生(♂)和选育F1(♀)×选育F1(♂)4个组合的子代,对其卵径、油球径以及2~10月龄全长、体长和体质量进行分析比较。试验结果表明,选育F1(♀)×野生(♂)卵径最大,并与野生(♀)×野生(♂)之间存在显著性差异(P<0.05),4个群体油球径差异不显著(P>0.05);体质量是大黄鱼群体间杂交主要表现的生长性状,9月龄体质量双亲杂种优势最大为14.48%,野生(♀)×选育F1(♂)体质量杂种优势最大为25.68%;野生(♀)×选育F1(♂)的全长特定生长率为1.92%/d,体质量为5.60%/d及选育F1(♀)×野生(♂)体长为1.99%/d,是4个群体中最大特定生长率;拟合体长(L)与体质量(m)关系,选育F1(♀)×野生(♂)为m=0.0277L2.8045(r2=0.9980),野生(♀)×选育F1(♂)为m=0.0210L2.9287(r2=0.9993),野生(♀)×野生(♂)为m=0.0236L2.8592(r2=0.9916),选育F1(♀)×选育F1(♂)为m=0.0228L2.8946(r2=0.9984)。试验结果表明,通过野生群体与选育养殖群体的杂交能提高大黄鱼子代的经济性状。更多还原

【Abstract】 The egg diameter,oil globule diameter,total length,body length and body weight 2-10 month old were compared among F1 crossed between wild and selective breeding large yellow croaker Larimichthys croceaincluding first filial generation(F1)(♀)×wild(♂),wild(♀)×first filial generation(F1)(♂),wild(♀)×wild(♂)and first filial generation(F1)(♀)×first filial generation(F1)(♂).It was found that the first filial generation(F1)(♀)× wild large yellow croaker(♂)had the eggs with the maximal diameter,significant difference from that in wild(♀)×wild(♂)(P< 0.05).No significant difference in the oil globule diameter was observed in the four groups.There was the best growth(14.48%)in body weight in the 9-month-old F1 hybrid of their wild parents,and the best growth heterosis(25.68%)in the group of wild(♀)×first filial generation(F1)(♂).The specific growth rate in total length and body weight were found to be 1.92%/d and 5.60%/d in wild(♀)×first filial generation(F1)(♂),respectively.There was 1.99 %/d of specific growth rate in body length in first filial generation(F1)(♀)×wild(♂),showing the best growth among these four groups.The relationship between fitting body length(L)and body weight(W)was as the following:m=0.0277L2.8045(r2=0.9980)in first filial generation(F1)(♀)× wild(♂);m=0.0210L2.9287(r2=0.9993)in wild(♀)×first filial generation(F1)(♂);m=0.0236 L2.8592(r2=0.9916)in wild(♀)×wild(♂);and m=0.0228L2.8946(r2=0.9984)in first filial generation(F1)(♀)×first filial generation(F1)(♂).The findings indicate that hybrid between wild population and cultured population leads to improvement of economic characters of filial generation of large yellow croaker.更多还原