【摘要】 通过对引自国际马铃薯中心的甘薯实生种子、高代品系进行生产力、抗病性、品质分析等性状的全面鉴定 ,筛选出抗病高干特异资源材料徐 781,并对其不孕群别、砧木适合性、遗传特点等进一步评价 ,结果表明徐 781具有与国内常用亲本亲缘关系远、高干率、高抗茎线虫病、易开花、结实率高、后代入选率高等特点 ,是国内现有育种材料中罕见的很有利用价值的优异育种材料。更多还原

【Abstract】 Analyses of yielding ability, disease resistance and quality were conducted for several years on sweetpotato true seeds introduced from International Potato Center. As a result, Xu 781, a new bred line was selected to have high disease resistance and high dry matter content. Its cross-incompatible group, adaptability to grafting stocks, genetic characteristics were also studied. The results showed that the genetic relationship of Xu 781 was far from local varieties. It had high dry matter content, high resistance to stem-nematode, easy flowering, high capsule setting ratio, and high selecting ratio of its progeny seedlings.Thus,it is a rare parental material.更多还原