摘要： 1974～1993年间，用棉属8个野生种两个二倍体栽培种作父本与陆地棉进行种间杂交，从其后代中，选育出10个具有丰产、优质、抗病的新品系和128个各具优良性状的种质材料，其中6个已参加了省级以上区试。它们分别属于8种类型：高衣分44%-48%）,长绒36.0～40.6mm）,高强纤维25.3～33.3g/tex）,大铃7.08～9.309）,最佳麦克隆值3.7～4.抗棉蚜Ⅰ-Ⅱ级）,抗棉铃虫Ⅰ-Ⅱ级）,兼抗枯黄萎病病指0～10和8～25）.这些新的品系和种质材料丰富了陆地棉的遗传基础。

关键词: 棉属, 野生棉, 陆地棉, 种间杂交

Abstract: Ten new strains and 12 new germplasm materials were selected from the subse-quent generation of the interspecific hybridization in Gossypium in 1974-1993 using 8 wild species and 2 diploid cultivated species as male parents and some varieties of upland cotton as female parents in these interspecific crosses. Of the ten new strains, six were joined either the national wilt-resistant cotton variety tests in the Yellow River Valley or the regional tests in Hebei province. These and good fibre quality.new strains were all with such characters as wilt resistance, high yields. The 128 new germplasm materials each have its excellent characters. They were divided into 8 groups, namely high lint percentage44-48%), long fibre length 3f-40. 6mm), high fibre strength 25.333.3g/tex), big boll 7.089.3g), fine micronair 3.74.0). Aphis risistanceⅠ-Ⅱ degree), bollworm resistanceⅠ-Ⅱ degree), both Fusarium and Verticillium resistance severity index 0-10 and 8-25). These new germplasm materials all were the very valuable materials in the cotton breeding.,

Key words: Gossypium, Wild species, Upland cotton, Interspecific hybridization

中图分类号: 

• S562.048