首页 >  水产科学 >  魁蚶中国与韩国群体杂交子一代生长比较

2020, 39(2): 218-223. doi: 10.16378/j.cnki.1003-1111.2020.02.009

魁蚶中国与韩国群体杂交子一代生长比较

山东省海洋生物研究院, 青岛市海洋生物种质资源挖掘与利用工程实验室, 山东 青岛 266104

收稿日期:2019-05-10
修回日期:2019-08-27

基金项目:   山东省农业重大应用技术创新项目(2017-2020);山东省农业良种工程项目(2019LZGC020);山东省自然科学基金资助项目(ZR2019PC025);中海油公益基金会项目(2017-2019). 

关键词: 魁蚶 , 杂交 , 生长 , 杂种优势

Growth of Hybrid F1 of Burnt-end Ark Scapharca broughtonii between Chinese and Korean Populations

Engineering Laboratory for Exploration and Utilization of Marine Germplasm Resources of Qingdao, Marine Biology Institute of Shandong Province, Qingdao 266104, China

Received Date:2019-05-10
Accepted Date:2019-08-27

Keywords: Scapharca broughtonii , hybridization/cross , growth , heterosis

开展魁蚶中国群体和韩国群体的正反杂交试验,建立了中国群体♀×韩国群体♂(中韩正交群体)、中国群体♀×中国群体♂(中国群体)、韩国群体♀×中国群体♂(中韩反交群体)、韩国群体♀×韩国群体♂(韩国群体)4个群体。稚贝出池后在海区(N 35°32'41.85″,E 119°41'29.49″)常规笼养,分别在4、5、7、9、11、13月龄取样,分析其生长、存活及杂种优势。研究结果显示,中韩正交群体壳长、壳高、壳宽和湿质量的杂种优势变化趋势一致:前期杂种优势率随着日龄的增长而持续增大,到11月龄时最高,13月龄又明显下降。11月龄壳长、壳高、壳宽和湿质量的杂种优势率分别为7.73%、4.80%、8.84%和27.44%,其中湿质量的杂种优势最为显著;中韩反交群体4个性状在7月龄和11月龄的杂种优势率基本为正值,最高值为2.61%。中韩正交群体和中韩反交群体存活率的杂交优势率均为正值,分别为5.89%和4.15%,中韩正交群体杂交优势略高于中韩反交群体。综合分析表明,中韩正交群体在生长性状和存活率上存在明显的杂种优势,是一种理想的育种材料。研究结果可为魁蚶种质资源的开发利用和杂交育种提供理论支撑和技术参考。

Four groups of hybrid F1 of burnt-end ark Scapharca broughtonii, including Chinese population ♀×Korean population ♂(HZ-1), Chinese population♀×Chinese population ♂(ZZ), Korean population ♀×Chinese population ♂(HZ-2), and Korean population ♀×Korean population♂(HH), were established by reciprocal cross between Chinese population and Korean population. The juvenile shellfish were reared in a cage in the sea area (N 35°32'41.85″, E 119°41'29.49″) and sampled at the ages of 4, 5, 7, 9, 11 and 13 months to evaluate growth, survival and heterosis of juvenile shellfish. The variation trend of heterosis of shell length, shell height, shell width and wet body weight was found to be the same in HZ-1, with increase with the increase in age at the early stage, and the maximal at the age of 11 months (heterosis rate of 7.73% in shell length, 4.80% in shell height, 8.84% in shell width, and 27.44% in wet body weight, the maximal heterosis rate in body weight), and then significant decrease at the age of 13 months. The 7-month old and 11-month old HZ-2 had the basically positive values of the heterosis rate in the 4 traits, with the maximal value of 2.61%, and with heterosis rates in survival of 5.89% in HZ-1 and 4.15% in HZ-2, showing higher in HZ-1 than in HZ-2. Comprehensive analysis indicated that HZ-1 as an ideal breeding candidate had obvious heterosis in growth performance and survival rate. The findings provide theoretical support and technical reference for the development and utilization of germplasm resources and cross breeding of burnt-end ark.

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魁蚶中国与韩国群体杂交子一代生长比较