CAJ | 학술논문

用来自CIMMYT的热带、亚热带早熟群体和与之杂种优势关系最近的我国温带核心种质代表系杂交构建的半外来群体中的部分选系与测验种测交,通过杂种优势和配合力来分析改良效果.结果表明,半外来群体丹340×Pob70选系的一般配合力较高,与Lancaster群和改良Reid群测验种都有较大的杂种优势;Pob101×掖478选系的一般配合力中等.主要与旅大红骨群和Lancaster群测验种有较大的杂种优势,掖107×Pob69选系的一般配合力较低,但与旅大红骨群测验种有一定的杂种优势.该改良方法为这些半外来群体及其选系的继续改良和利用提供了依据.
용래자CIMMYT적열대、아열대조숙군체화여지잡충우세관계최근적아국온대핵심충질대표계잡교구건적반외래군체중적부분선계여측험충측교,통과잡충우세화배합력래분석개량효과.결과표명,반외래군체단340×Pob70선계적일반배합력교고,여Lancaster군화개량Reid군측험충도유교대적잡충우세;Pob101×액478선계적일반배합력중등.주요여려대홍골군화Lancaster군측험충유교대적잡충우세,액107×Pob69선계적일반배합력교저,단여려대홍골군측험충유일정적잡충우세.해개량방법위저사반외래군체급기선계적계속개량화이용제공료의거.
The heterosis and combining ability of some maize lines selected from three semi-exotic populations constructed with CIMMYT tropical or sub-tropical germ plasm and temperate lines were tested to study their improvement effects and cross direction in China. The results showed that lines selected from semi-exotic population Dan340 ×Pob70 had higher general combining ability and the heterosis when crossed with lines in the Lancaster group and the improved Reid group. The lines selected from semi-exotic population Pob101 ×Ye478 had medium general combining ability and higher heterosis when crossed with lines in the Ludahonggu group. The lines selected from the semi-exotic population Ye107×Pob69 had lower general combining ability and medium heterosis when crossed with lines in the Ludahonggu group.