论文部分内容阅读
采用9个热带、温带群体和4个优良自交系进行NCⅡ设计,配制36个杂交组合,在河南安阳中棉所试验基地进行了两年的田间鉴定,了解9个群体和4个自交系的配合力及其杂种优势关系,鉴定其应用价值和利用潜力,研究群体种质及群体×测验种互作的遗传效应及其杂种优势关系。结果表明:群体Suwan1和SGC4的一般配合力(GCA)表现最为突出;自交系HZ111在黄淮海地区有潜在的利用价值;WBMC4×丹340、辽旅群体×掖478、憨头苞谷×掖478、辽旅群体×美22和BSSSC9×HZ111的特殊配合力(SCA)表现突出;群体×测验种的互作对总方差的贡献最大。根据产量特殊配合力划分杂种优势群切实可行,利用地理和种质基础远缘的群体材料与国内系组配,获得强优势组合的机会增加,群体的利用效率明显加大。
A total of 36 hybrid combinations were made using 9 tropical and temperate populations and 4 elite inbred lines. Two field trials were conducted in the experimental base of Zhongmian in Anyang, Henan province to understand the characteristics of 9 populations and 4 inbred lines And its heterosis relationship to identify its application value and utilization potential, to study the genetic effects of population germplasm and population × test species interaction and their heterosis relationship. The results showed that the general combining ability (GCA) of Suwan1 and SGC4 was the most prominent. Inbred line HZ111 had potential value in Huang-Huai-Hai region; WBMC4 × Dan 340, Liaoguo × Fu 477, Houdou Baigu × Ye 478 , The special combining ability (SCA) of Liaoguang × US 22 and BSSSC9 × HZ111 was outstanding. The interaction of population × test species contributed the most to the total variance. It is practicable to classify the heterotic group according to the special combining ability of yield. By using the group materials with distant geographical basis and germplasm base to combine with the domestic lineage, the chances of obtaining the strong superior combination increase, and the utilization efficiency of the group is obviously increased.