中国水产科学2016，Vol.23Issue(4)：890-899,10.DOI:10.3724/SP.J.1118.2016.15701
翘嘴鳜♀×斑鳜♂杂交子一代早期生长速度
Analysis of early-stage growth rate of the hybrid F1ofSiniperca chuatsi♀×S. scherzeri♂
摘要
Abstract
Based on the measured data of three important economic traits (body weight, body length and body height) of the hybrids F1 ofSiniperca chuatsi♀×S. scherzeri♂ and Siniperca chuatsi individuals at the ages of 0.3 months, 2 months, 7 months and 11 months, the growth rate and heterosis of the hybrids F1 were analyzed and compared withSiniperca chuatsi, using the performance metrics of coefficient of variation, high-parent heterosis, relative and absolute growth rate, relationship curve of body weight and body height, and relative fatness. At age of 7 months, the mean body weight of the hybrids F1 (300.4 g±118.2 g) was not significantly different withS. chuatsi(305.2 g±82.5 g), while the mean monthly relative growth rate of body weight, body length and body height (280.13%, 25.30% and 27.55% ) of the hybrids F1 were higher than that ofS. chuatsi(89.62%, 15.90% and 12.72%). The high-parent heterosis of the hybrids F1 for body length at age of 0.3 months and 11 months was 2.48% and 0.91%, respectively. All growth rate curves of the hybrids F1 were similar with their female parentS. chuatsi. However, the mean body weight of the hybrids F1 (540.88 g±173.66 g) was significantly lower thanS. chuatsi(624.45 g±154.11 g) at age of 11 months. The coefficient of determination (0.992 and 0.995), condition factor (0.059 and 0.058) and allometric growth factor (2.722 and 2.740) for relationship curve of body weight and body height of the hybrids F1andSiniperca chuatsiwere almost identical. These results indicated that the primary growth trend of the hybrids F1was similar toS. chuatsi, the relationship curve of body weight and body height of the hybrids F1 was consistent with that ofS. chuatsi, even though their overall growth rate was slightly slower than S. chuatsi.The hybrids F1 successfully inherited the fast growth trait from their female parentS. chuatsi, with some high-parent heterosis in body length.关键词
翘嘴鳜/斑鳜/杂交子一代/生长速度/杂种优势Key words
Siniperca chuatsi/Siniperca scherzeri/first hybrid filial generation/growth rate/heterosis分类
农业科技引用本文复制引用
孙际佳,何建国,刘丽,王海芳,卢薛,胥鹏,李桂峰..翘嘴鳜♀×斑鳜♂杂交子一代早期生长速度[J].中国水产科学,2016,23(4):890-899,10.基金项目
广东省战略性新兴产业核心技术攻关项目(2012A020800001) （2012A020800001）
广东省教育厅项目(cxzd1104) （cxzd1104）
佛山市引进科技创新团队资助计划(2014IT100122) （2014IT100122）
