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=0.0210 L2.9287(r2=0.9993),野生(♀)×野生(♂)为 m=0.0236 L2.8592(r2=0.9916),选育F1(♀)×选育F1(♂)为 m=0.0228 L2.8946(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。
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 Larimich‐thys crocea including first filial generation (F1 ) (♀) × wild (♂) ,wild (♀) × first filial generation (F1 ) (♂),wild(♀)×wild(♂)andfirstfilialgeneration(F1)(♀)×firstfilialgeneration(F1)(♂).Itwas 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 fit‐ting body length (L) and body weight (W ) was as the following :m=0 .0277L2 .8045 (r2 =0 .9980) in first fil‐ialgeneration(F1)(♀) × wild(♂);m=0.0210L2.9287(r2 =0.9993)inwild(♀)×firstfilialgeneration (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 be‐tween wild population and cultured population leads to improvement of economic characters of filial genera‐tion of large yellow croaker .
出处
《水产科学》
CAS
北大核心
2014年第11期667-673,共7页
Fisheries Science
基金
国家星火计划项目(S2013C400028)
福建省科技计划区域重大项目(2012N3013)
福建省海洋高新产业发展专项项目(闽海渔高新[2013]010号)
关键词
大黄鱼
杂交
杂种优势
特定生长率
生长性状
L arimichthys crocea
cross
heterosis
specific grow th rate
grow th trait