【摘要】 优良种质创新是大豆新品种选育的关键。经过近 2 0年的中间种质创新、亲本筛选、抗性选育、鉴定和品质检验等研究 ,育成了双抗双高的夏大豆优良种质鲁 99 2。其对大豆胞囊线虫 1、3、5号生理小种的抗性均为 1级 ;对大豆花叶病毒 y6株系的抗性也为 1级 ;籽粒脂肪含量平均为 2 2 0 9%,高值为 2 2 6 7%;蛋白质含量平均为 43 2 9%,高值为 45 0 %;蛋白质和脂肪合计含量平均为 6 5 38%,高值达 6 6 4 0 %。鲁 99 2的育成说明创造和利用优良种质、选择适宜的杂交亲本和采用有效的选育方法等对大豆育种至关重要。更多还原

【Abstract】 Breeding for elite germplasm is important for selection of elite soybean varieties.It has taken nearly 20 years to breed the elite line Lu99-2.Through selecting parents,breeding SCN-resistant and SMV-resistant lines,testing the resistance to SCN and SMV of the lines and testing the seeds for oil and protein.All of the resistances grades of Lu99-2 to race 1,race 3,and race 5 of SCN and to y 6 of SMV are 1.The oil content in seeds varied between 21.4% and 22.67% the protein content varied between 42.7% and 45.0%,and the total of oil and protein contenes varied between 64.85% and 66.4%.更多还原