利用野生大豆资源创新优质抗病大豆新种质

利用野生大豆与栽培大豆种间杂交中间材料与高产栽培大豆回交转育，创新选育出蛋白质含量45％以上，蛋脂总含量63％以上，分别抗大豆疫霉根腐病，抗大豆灰斑病，农艺性状优良的大豆创新种质资源3份。其中，龙品8802-1抗大豆疫霉根腐病兼抗大豆灰斑病，蛋白质含量45．64％，脂肪含量18．42％，蛋脂总含量64．06％；龙品01-757抗大豆灰斑病，蛋白质含量45．99％，脂肪含量19．4％，蛋脂总含量65．39％；龙品9501，中抗大豆灰斑病，蛋白质含量45．11％，脂肪含量18．32％，蛋脂总含量63．43％。研究结果表明，利用含有野生大豆血缘的种间杂交材料与高产栽培大豆回交，是拓宽大豆遗传基础，创新选育优质、抗病、农艺性状优良大豆新种质资源的有效途径。

Using Wild Soybean Resources to Develop the New Soybean Germplasm of High Quality and Diseases Resistance

Using high yield cultivated soybean as recurrent parents, we made the backcrosses with intermediate materials which were derived from the cross combinations between wild and cultivated soybeans. Three new elite germplasms were developed, with protein contents above 45%, and the total of protein and oil contents above 63%. Longpin8802-1, one of the three elite germplasms, is resistant to phytothora rot and frogeye leaf spot, and its protein content, oil content and total of both protein and oil content are 45.64 %, 18.42 % and 64.06%, respectively. Longpin01-757 is resistant to frogeye leaf spot, and its protein content, oil contents and total of both protein and oil contents are 45.99%, 19.40% and 65.39%, respectively. Longpin9501 has the medium resistance to frogeye leaf spot , and its protein content, oil content and total of both protein and oil content are 45.11%, 18.32 % and 63.43 %, respectively. The data suggest that it is very effective way to broaden soybean genetic basis and develop the new soybean germplasms with high quality and resistance to diseases and good agronomic characters, using high yield cultivated soybeans as recurrent parents to make the backcrosses with interspecific enhancement.