大豆杂种后代生育期及光温反应特性的选择  

SELECTION OF GROWTH PERIOD TRAITS AND THEIR SENSITIVITY OF RESPONSES TO PLANTING SEASONS IN SOYBEAN

作　　者：杨永华[1] 盖钧镒[1] 马育华[1] 

机构地区：[1]南京农业大学农学系

出　　处：《南京农业大学学报》1993年第4期13-16,共4页Journal of Nanjing Agricultural University

基　　金：国家自然科学基金

摘　　要：用6个生育期不同的大豆品种配制的杂交组合为材料,研究了春、夏、秋播下生育期及其对播季反应敏感度的实际选择效果。结果表明:供试组合不同播季均有生育期超亲;可获得生育期对播季反应敏感度超过亲本的家系,超钝感亲本家系较多出现于双亲生育期相差不大的组合.在播季间全生育期平均数的低、中值区,作全生育期播季反应敏感度高和低两个极端方向的选择,实际选择效果较好;而在相应的高值区,实际效果较差:选择效果组合间呈现差异。从中已选出了18个既有相对较长的生育前期或后期又对播季反应不敏感的家系,可供中间材料加以利用。Based on successive F_3 F_5～generations of seven crosses among six soybean cultivars with dif-ferent growth period traits (GPT) and their sensitivity of responses to planting seasons(SRPS),field exper-iment was designed with spring,summer and autumn planting types,to investigate practical effects of selec-tion on GPT and SRPS.The results showed that transgressive segregation on GPT was o(?)ured in all plant-ing seasons.Transgressive lines with later GPT were easier to be selected than that with theearlier Transgressive lines with lower or higher SRPS were identified.The smaller SRPS difference betweenbi-parents in one cross,the easier transgressive lines with lower SRPS were to be appeared.The practical ef-fect of simultaneous selection toward higher or lower SRPS directions was better as MGPT(the Means ofGPT over planting seasons)was smaller.The cight(?)n lines with longer GPT and lower SRPS were selected tobe applied.

关 键 词：大豆 超亲遗传 光温反应 杂种 选择 

分 类 号：S565.103.5[农业科学—作物学]