高粱亲本系配合力问题的 F_1代表现

• 作 者: 孙贵荒 陈悦 石玉学
• 机 构: 辽宁省农科院高粱所,辽宁省农科院高粱所,辽宁省农科院高粱所,
• 出 处: 辽宁农业科学
• 发表日期: 1992年04期
• 关键词: 配合力分析 F_1 高粱杂交种 杂交种产量 一般配合力 不完全双列杂交 优良亲本 特殊配合力 组合产量 高产组合

实践证明,高产高粱杂交种的育成取决于优良亲本系的选育。高配合力是优良亲本系的重要特征。正确地理解配合力的实质,研究亲本配合力的构成和对杂交种产量形成的影响,对于高粱杂交种亲本选育具有实际意义。材料和方法用两套亲本(A 系及 R 系)之间相互杂交(A×R)这一不完全双列杂交资料,分析高粱亲本系的配合力已被高粱育种界普遍接受和采用。依据此法用23个亲本组配了两组不完全双列杂交试验,共69个组合,分别于1990、1991年以3次重复种植。行长4米,行距0.6米,每亩保苗6000株。1990年为3行区,1991年为2行区。两组试验(90、91)均以小区产量进行配合力分析,结果分列表1、表2。

Practice has proved that the breeding of high yield sorghum hybrids depends on the selection of excellent parental lines. High combining ability is an important feature of excellent parental line. Correctly understanding the essence of combining ability, studying the composition of combining ability of parents and the effect on yield formation of hybrids have practical significance for the parental breeding of sorghum hybrids. MATERIALS AND METHODS The analysis of the sorghum parental line combining ability by using two incomplete crosses (A × R) of two parents (A line and R line) has been generally accepted and adopted by sorghum breeding. According to this method, 23 parents were assigned to two groups of incomplete diallel crosses, a total of 69 combinations, which were planted in three replicates in 1990 and 1991 respectively. Governor 4 meters, spacing 0.6 meters, seedlings per acre 6000. In 1990 it was 3 lines and in 1991 it was 2 lines. Two groups of trials (90,91) were carried out with the yield of community analysis of the combined results in Table 1, Table 2.