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采用棉属种间杂交新技术:对杂交铃施用GA_3和NAA-离体培养杂种胚一试管内染色体加倍三者相结合,显著提高了杂交铃成铃率和成胚率。获得了海岛棉—色伯氏棉—陆地棉的三元杂种。研究了杂种性状的表现,育性的恢复以及性状的传递规律。从中选出了抗黄萎病、抗棉铃虫、抗棉蚜及高强纤维等5类选系,创建了我国的“HBT“新资源体系,并首次用野生棉杂交育成了丰产优质抗病新品种“石远321”,已通过国家黄河流域区试,1993、1994两年皮棉和霜前皮棉产量均居参试8个品种首位,分别平均增产15.9％和19.7％,大幅度超过了对照品种;品质和抗病性均符合国家要求。开创了我国野生棉育种的新路,显著缩短了育种年限。
A new interspecific hybridization technique of Gossypium hirsutum was used: the combination of GA_3 and NAA-hybrid embryos in vitro and the doubling of chromosomes in NAA tubes significantly increased the boll forming rate and embryogenesis rate. The island cotton - cottonseed - upland cotton ternary hybrids. Studied the performance of hybrid traits, fertility restoration and trait transmission. From these, we selected five kinds of selected lines, such as resistance to verticillium wilt, cotton bollworm, cotton aphid and high-strength fiber, created our new ”HBT “ new resource system and made the first high-yield, high-quality and disease-resistant new hybrid with wild cotton The variety ”Shi Yuan 321" has passed the national Yellow River Basin test. In l993 and 1994, the lint yield of lint and frost before the frost ranked the first among the eight varieties tested, with an average increase of 15.9% and 19.7% respectively, significantly exceeding that of the control variety ; Quality and disease resistance are in line with national requirements. It created a new way for wild cotton breeding in our country and significantly shortened breeding years.