不同遗传背景BC_3F_2代大豆蛋白质及脂肪含量遗传分析  

Genetic Analysis of Protein and Oil Content in BC_3F_2 Populations of Soybean

作　　者：战宇航[1] 曹广禄 刘阳[1] 韩英鹏[1] 王强[1] 孟宪新[1] 魏淑红[1] 李文滨[1] 

机构地区：[1]东北农业大学大豆生物学教育部重点实验室/农业部北方大豆生物学与遗传育种区域重点实验室,黑龙江哈尔滨150030

出　　处：《大豆科学》2015年第1期15-18,共4页Soybean Science

基　　金：国家重点基础研究发展计划"973计划"前期项目(2012CB126311);国家自然科学基金(31201227;31301339);国家"十二五"科技支撑计划(2011BAD35B06-1);现代农业产业技术体系(CARS-04-PS04);中国博士后项目(20110491024);黑龙江省博士后项目(LBH11220;LBH-TZ1210);黑龙江省教育厅青年学术骨干项目(1252G014);黑龙江省教育厅新世纪优秀人才项目(1253-NCET-005);教育部博士点项目(20122325120012);东北农业大学博士后启动金项目(2012RCB11)

摘　　要：探索了不同遗传背景条件下BC3F2代大豆蛋白质含量及脂肪含量的遗传规律,旨在为选配优良的杂交组合及制定有效育种方案提供理论基础。分别以红丰11和早熟18大豆品种为供体亲本,黑龙江省主栽品种东农47为受体亲本,采用回交3次、自交2次,得到2个回交群体,并对其后代群体的蛋白质含量、油分含量、百粒重等农艺性状进行方差及相关性等分析。结果表明:2个回交群体间籽粒蛋白质和油分含量差异显著,且同一组合后代群体内表现一致性较好。相关分析表明BC3F2代蛋白质、油分含量与供体及受体亲本均呈不显著正相关;BC3F2后代家系的蛋白质、油分含量与双亲差值呈不显著负相关,与中亲值呈显著正相关,因此用双亲中亲值来预测杂交组合BC3F2代的蛋白质和油分含量平均值更加准确。相关分析结果表明百粒重和株高可以作为间接选育大豆高蛋白质和高脂肪品系的间接依据;在大豆高油或高蛋白育种中,亲本宜采用双亲差异大且中亲值较高的来配置组合。This study explores genetic regularity of protein and oil content across different genetic backgrounds,which aimed at providing a theoretical basis for developing effective breeding programs. Two BC3F2 populations were made a cross between Dongnong 47 and Hongfeng 11,Zaoshu 18 through hybridization twice and backcross three times,and thus protein content,oil content,100-seed weight and other agronomic characters were analyzed. The results showed seed protein and oil content of the two backcross populations were different,and the performances of the two backcross populations behave consistency. Correlation analysis showed that seed protein and oil content of the two backcross populations wasn＇t correlated with protein and oil content of the parents and difference between parents,respectively,while positively correlated with the mean between parents.Hence the mean between parents used to predict protein and oil content of two backcross populations would be more accurate.Correlation analysis showed that 100-seed weight and plant height were index as indirect selection for breeding varieties with high protein and oil content. The results of the study indicated that higher differences and mean between parents were valuable in high oil or protein breeding.

关 键 词：大豆 品质性状 回交选育 

分 类 号：S565.1[农业科学—作物学]