摘要
2008年3月以2006年构建的4个家系F1为亲本,采用不完全双列杂交法,成功构建了9个马氏珠母贝(Pinctada facata)家系,在相同养殖条件下对其壳高、壳长、壳宽和体质量进行了周年测量,对不同遗传背景的家系和不同时期4个生长性状的生长速率进行了比较分析。结果显示,不同家系间及不同生长时期在各性状上存在显著差异(P<0.05)。9个家系的壳高生长速率顺序为F11>F4>F9>F3>F6>F12>F2>F7>F5,壳长生长速率顺序为F11>F4>F3>F9>F12>F2>F6>F7>F5,壳宽生长速率顺序为F6>F11>F3>F9>F4>F12>F2>F5>F7,体质量生长速率顺序为F11>F12>F9>F3>F7>F2>F4>F5>F6。F11、F4和F9家系壳高生长较快,F11家系壳长生长较快,F11、F3和F9家系壳宽生长较快,F11、F12和F9家系体质量生长较快,彼此间差异显著(P<0.05)。在不同的生长时期各生长指标差异显著性有所不同,10月～12月以壳高、壳长和壳宽增长较为显著,3月～5月以体质量增长较为显著;慢速生长期各生长性状指标增长速率差异均不显著,而快速增长时期各生长性状增长速率均存在显著性差异。筛选出生长性状最优的家系F11,为通过家系选择培育优良品种提供了遗传素材,同时为家系育种策略的制定提供了指导。
In March 2008, taking 4 families established in 2006 Pinctada fucata, which were cultured under the same conditions, as parents, we successfully established 9 families of pearl oyster by incomplete diallel cross method. One-year continuous measurement for the growth traits （shell height, shell length, shell width and total weight） of the 9 families was conducted. Significant difference of those 4 growth traits is observed among different families and at different growth stages （ P 〈 0. 05 ）. The order of the growth rate of shell height, shell length, shell width and total weight is as follows, respectively： F11 〉 F4 〉 F9 〉 F3 〉 F6 〉 Fl2 〉 F2 〉 F7〉 FS, Fll 〉F4〉F3 〉F9 〉F12〉F2〉F6〉F7〉F5, F6〉F11 〉F3〉F9 〉F4〉F12 〉F2 〉F5 〉F7, F11 〉F12〉F9 〉F3 〉F7 〉F2 〉 F4 〉 F5 〉 F6. F11, F4 and F0 grow faster in shell height ; F11 grows faster in shell length ; F11, F3 and F9 grow faster in shell width ; F11, F12 and F9 grow faster in total weight （ P 〈 0. 05 ）. The growth rate of the 4 traits shows significant difference at different growth stages. From October to December, the growth rate of shell length, shell width and shell height is obviously faster, while from March to May, the growth rate of total weight is. The growth rate of 4 traits shows significant difference among the 9 families at fast growth stage but not at slow one. F11 is selected as the best family for its satisfactory growth traits, which provides excellent genetic materials for the breeding selection, as well as references for the breeding strategies of P. fucata families.
出处
《南方水产科学》
CAS
2011年第5期30-36,共7页
South China Fisheries Science
基金
广东省科技计划项目(2008A020100004)
广东省产学研项目(2010B090300075)
NSFC-广东联合基金(U0831001)
