Abstract：We chosed three different populations of dark sleeper Odontobutis potamop hila from Jiande , Dangtu and Taihu and mated by using 3 × 3 full diallel crossing .The growth traits and genetic diversity about the F1 offspring of nine combinations were compared and F1 progeny′s growth traits were evaluated in 2 months and 4 months .The length growth rate and the weight gain rate of the Jiande (♂) × Dangtu (♀) combination were shown to be 42 .58% and 190 .79% .The overall length heterosis ratio and the weight heterosis ratio of Jiande × Dangtu (cross and reciprocal cross ) combination were 17 .88% and 66 .75% ,higher than those in other combinations .There were higer length growth rate ,the weight gain rate and the heterosis rate in F1 progeny from different geographic populations than those in the same geo‐graphical population of the self‐reproducing F1 offspring .Subsequently ,the average value (0 .195) of hy‐brid progeny genetic differentiation index (Fst) was figured out by using eight microsatellite loci ,indica‐ting that there were genetic differences and the differentiation of nine combinations existed in offspring . The nine combinations of expected heterozygosity (He) were ranged from 0 .1493 to 0 .7971 and the ob‐served heterozygosity (Ho) ranged from 0 .1562 to 1 .0000 .The heterozygosity and the genetic diversity of hybrid progeny were higher than those of self‐reproducing progeny and the alleles (A) .The polymorphism information content (PIC) value of Jiande (♂) × Dangtu (♀) combination were 3 .9 and 0 .486 ,higher than other combinations .To synthesize the growth performance and the genetic diversity ,we suggest that determination of grow th and genetic diversity of the Jiande (♂) × Dangtu (♀ ) be the preliminary best combination of cross breeding .
收稿日期: 2016-05-25
引用本文:
王佩佩,丁严冬,于兴达,贾秀琪,张国松,尹绍武,陈树桥,周国勤. 河川沙塘鳢3个不同地理群体杂交 F1代生长性能及遗传多样性[J]. 水产科学, 2016, 35(5): 528-534.
WANG Peipei,DING Yandong,YU Xingda,JIA Xiuqi,ZHANG Guosong,YIN Shaowu,CHEN Shuqiao,ZHOU Guoqin. Growth Trait and Genetic Diversity in the F1 Progeny of Dark Sleeper Odontobutis potamophila from Three Different Populations. Fisheries Science, 2016, 35(5): 528-534.
