摘要
本文通过对8个大豆品种(系)的F_2代不完全双列杂交设计固定模型的分析,初步研究了蛋白质含量等11个品质性状之间以及它们与产量等农艺性状间的遗传相关,讨论了几种主要品质性状的遗传进度。结果表明: 1.蛋白质含量与单株粒重、主茎有效节数、脂肪、软脂酸含量呈密切负相关,与百粒重、株高、主茎有效节数、开花期的相关遗传进度的绝对值较大。 2.脂肪含量与百粒重、株高、蛋白质、软脂酸、油酸含量、蛋白质总量密切负相关,与单株粒数、开花期、亚油酸、亚麻酸含量密切正相关;与单株粒数、百粒重、株高、开花期的相关遗传进度的绝对值较高。 3.蛋氨酸含量与主茎有效节数、亚油酸含量密切负相关,与株高密切正相关;与株高的相关遗传进度值较高。 4.亚麻酸含量与百粒重、株高、油酸含量、蛋白质总量密切负相关;与单株粒数、结荚高、开花期、脂肪含量密切正相关;与单株粒数、百粒重、株高、结荚高、开花期、成熟期的相关遗传进度的绝对值较高。 这些相关遗传进度值大且容易测定的性状、可以在F_2代开始作为直接选择性状,间接选择品质性状。
Eight soybean varieties or lines were studied for the genetic correlations and expecsed genetic proregress of qualitative and quantitative characters Fix d model of NCD-Ⅱ design was used. The result indicates that:Protein percentage was of closely negative correlation with seed yield per strain, fruited node number of main stem, oil percetage and palmitic acid and highly positive correlations with see weight, plant height,total protein/per mu.Expected genetic progress in protein percentage resulting from selection on seed weight,fruited node number of main stem and flowering time was higher than selection on other characters.Oil percentage was of close negative correlation with seed weight, plant height,protein percentage,palmitic acid,oleic and total peotein per mu, and of closely positive correlation with grain number per strain,flowering time, linoleic and linolenic acid percentage. Expected genetic progress in oil percentage resulting from selection on grain number per strain seed weight, plant height, flowering time was also higher than selection on other characters.Methionine percentage was of close negative correlatio with fruited node number of main stem and linoleic acid percentage, and of closely positive correlation with plant height. Expected genetic progress in methionine regulting from selection on plant height was more impo-rta t than selection on other characters.Linolenic acid percentage was of close negative correlation with seed weight, plant height, oleic acid percentage and total protein per mu, and highly positive correlation with grain number per strain, height of the pod at lowerest position, flowering time and oil percentage. The selection on grain number per strain, seed weight. plant height, height of the pod at lowerest position, flowering time and mature date may increase linolenic acid percentage more than selection on the others,
出处
《大豆科学》
CAS
CSCD
北大核心
1989年第1期21-32,共12页
Soybean Science
