首页 | 本学科首页   官方微博 | 高级检索  
     检索      

刺参(Apostichopus japonicus) 4个群体棘数的重复力估计
作者姓名:赵 帅  黄 旭  王海峰  张伟杰  刘永旗  宋 坚  王增东  经晨晨  常亚青
作者单位:1. 大连海洋大学 农业部北方海水增养殖重点实验室 大连 116023;2. 山东安源水产股份有限公司 烟台 264000
基金项目:农业部农业科研杰出人才及创新团队项目和辽宁省农业攻关及成果产业化项目(2015203003)共同资助
摘    要:为了研究刺参(Apostichopus japonicus)棘数的重复力、棘数所需度量次数和棘数最大可能生产力(MPPA),本研究针对韩国自繁群体(KK)、多刺自繁群体(DD)、山东自繁群体(SS)和三元杂交群体(DK)4个刺参群体,采用数量遗传学方法估计了12–17月龄刺参棘数的重复力,计算并比较了4个群体棘数所需的度量次数、MPPA 及其与刺参体重的相关系数。结果显示,在12–17月龄时,4个群体刺参棘数的重复力从高到低依次为 DD(0.29)>DK(0.28)>SS(0.20)>KK(0.19),且均为低度重复力;对 DD 和 DK 群体棘数测量5次,测量相对准确率可达80%以上,而 SS 和 KK 群体则需要测量8次才能达到80%以上准确率;4个群体刺参棘数的 MPPA 从高到低依次为 DD(41.3)>DK(40.8)>KK(39.8)>SS(39.1),但仅 DD 和 SS 群体间存在显著差异(P<0.05);各群体内刺参棘数MPPA 与体重均呈现显著的表型正相关(P<0.05)。以棘数作为育种目标性状,其重复力和 MPPA 可作为选择群体的依据。研究表明,DD 和 DK 群体的棘数多于另外2个群体,并且具有更高的选育潜力,更利于性状测定。因此,可作为重点群体进行进一步选育。

关 键 词:刺参  棘数  重复力  选择育种
收稿时间:2015/11/10 0:00:00
修稿时间:2015/12/2 0:00:00

Estimates of Repeatability Coefficients for Papillae Number in Four Populations of Sea Cucumber (Apostichopus japonicus)
Authors:ZHAO Shuai  HUANG Xu  WANG Haifeng  ZHANG Weijie  LIU Yongqi  SONG Jian  WANG Zengdong  JING Chenchen and CHANG Yaqing
Abstract:Sea cucumber (Apostichopus japonicus) has become one of the major aquacultural species in China. Genetic improved seeds of sea cucumber play a key role in the ever-increasing profit. Information on the genetic parameters of papillae number, the important economic trait of sea cucumber, however, has been lacking. To investigate the repeatability, required measure times, and the most probable producing ability (MPPA) of sea cucumber, we applied quantitative genetic methods to determine the repeatability coefficients of papillae number of four sea cucumber populations in the age of 12–17 month, including Korean self-propagated population (KK), Duoci self-propagated population (DD), Shandong self-propagated population (SS), and Three-way cross population (DK). Based on the estimates, we also calculated and compared the required measure times, MPPA, and correlation efficient between MPPA and body weight of the four populations. We found that the repeatability coefficients of papillae number were low in all four populations. The repeatability coefficients of the four population followed the order:DD(0.29)>DK(0.28)>SS(0.20)>KK(0.19). For population DD and DK, the papillae number needed to be measured for 5 times to reach a relative accuracy above 80%, while for SS and KK populations 8 measure times were required. The MPPA for papillae number followed the order: DD(41.3)>DK(40.8)> KK(39.8)>SS(39.1), with the significant difference between DD and SS only (P<0.05). The phenotype correlation between MPPA and body weight in each population was significantly positive. Therefore, repeatability and MPPA could be used as criteria in population selection for papillae number. Our results suggested that DD and DK populations might have higher papillae numbers, higher potential for selection, and less measure times needed than the other two populations, hence they could be the key populations for papillae number selection.
Keywords:Apostichopus japonicus  Papillae number  Repeatability  Selective breeding
本文献已被 万方数据 等数据库收录!
点击此处可从《》浏览原始摘要信息
点击此处可从《》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号