野生黑蝶贝表型性状对体质量的影响分析  被引量:25

Effects of Phenotypic Traits on Body Weight in Wild Population of Pearl Oyster Pinctada margaritifera

在线阅读下载全文

作  者:严俊贤[1] 刘宝锁[1] 李有宁[1] 陈明强[1] 吴开畅[1] 叶乐[1] 

机构地区:[1]中国水产科学研究院南海水产研究所,农业部南海渔业资源开发利用重点实验室,广东广州510300

出  处:《水产科学》2015年第9期560-564,共5页Fisheries Science

基  金:中央级公益性科研院所基本科研业务费专项资金资助项目(2013TS09,2008YD04);海南省重点科技计划项目(06123);三亚市农业科技创新项目(2014NK09);现代农业产业技术体系建设专项资金资助项目

摘  要:随机选取3~4龄野生黑蝶贝128只,对其壳长(L1)、壳高(L2)、壳宽(L3)、韧带长(L4)和体质量(m)进行测量,计算各性状间的相关系数,采用相关分析、通径分析方法计算了以壳长、壳高、壳宽和韧带长为自变量对因变量体质量的相关系数、通径系数和决定系数,得出不同表型性状对体质量的影响效果。试验结果表明,相关性分析中,对体质量的相关系数大小依次为壳高〉壳长〉壳宽〉韧带长(P〈0.01);通径分析中,壳高对体质量作用最大(0.589),其次是壳宽(0.278)和壳长(0.143);壳高对体质量的直接决定系数最大(0.347),其他依次为壳宽(0.077)、壳长(0.02)和韧带长(0.0001),总决定系数为r2=0.854;利用回归分析方法建立回归方程:m=-364.554+0.858xL1+3.032xL2+4.371xL3。通过对黑蝶贝壳高、壳宽进行选择,同时加强对壳长的协同选择来选育生长较快、适于插核育珠的黑蝶贝新品系,为黑蝶贝选择育种提供理论依据。To evaluate the effect of phenotypic traits on the body weight of pearl Pinctada margaritifera, the shell length (L1), shell height (L2), shell width (L3), ligament length (L4) and body weight (m) were measured randomly in 128 samples of the pearl oyster. The phenotypic correlation and path analysis were conducted to obtain correlation coefficient, path coefficient and determination coefficient, and then the effects of different phenotypic traits on body weight were obtained. The results showed that in correlation analysis, correlation coefficient on body weight were L2 〉L1〈 〉L3〉L4 (P〈0. 01). In path analysis, L2 showed the most direct (0. 589),and followed by the L3 (0. 278) and L1 (0. 143). L2 had the maximal determination coefficient on the body weight (0. 347), then L3 (0. 077), L1 (0. 02) and L4 (0. 0001) in sequence, with total determination coefficient of r2 =0. 854. The regression equation was: m =-364. 554+0. 858xL1 +3. 032xL2+ 4. 371zL3. The findings provide the theoretical foundation for variety selection of P. margaritifera. Shell high and shell width could be selected for a variety with high rate growth and adaptability of pearl culture, and shell length should be selected for improvement of body weight simultaneously.

关 键 词:黑蝶贝 表型性状 回归分析 相关性 

分 类 号:S968.316[农业科学—水产养殖]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象