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生育期是高粱的重要经济性状之一,也是高粱育种上一项主要选育目标。掌握高粱生育期遗传变异规律,可向育种工作提供某些指导,有一定的理论价值和实践意义。一、材料与方法选用不同生育期的栽培种和野生种共11份作杂交亲本,其中晚熟的2份:回头青、熊岳253,生育期130天;中熟的3份:熊岳380、马跷脚、三尺三,生育期112～119天;早熟的6份:甘南双心红、NK_(120)、大八叶、早红壳、KS_(30)和S.Verticilliflorum,生育期90～103天。在1980～1981两年预备试验的基础上,1982年播种了78份试材,其中包括晚×晚、晚×中、晚×早、中×中、中×早、早×
Growth stage is one of the important economic traits of sorghum and a major breeding target for sorghum breeding. Grasping the law of genetic variation in sorghum growth period can provide some guidance to the breeding work, which has certain theoretical value and practical significance. Materials and Methods 11 cultivars and wild species of different growth stages were selected as hybrid parents, of which 2 were late-maturing ones, namely, Hui Touqing and Xiong Yue 253 with a growth period of 130 days; 3 medium-matured Yue Xiong Yue 380, Scutellaria barbata, three feet three, the growth period of 112 to 119 days; precocious 6: Gannan ambrosial red, NK_ (120), big octopus, early red shell, KS_ (30) and S.Verticilliflorum, growth period 90 ~ 103 days. On the basis of two years preliminary test from 1980 to 1981, 78 test materials were sown in 1982, including late × late, late × middle and late × early, middle ×, middle × early and early ×