我国小豆应用核心种质的生态适应性及评价利用

Adaptability and Variation of an Applied Core Collection of Adzuki Bean( Vigna angularis) in China

为提高我国小豆(Vigna angularis)应用核心种质的育种利用效率,本研究通过2年2点的田间试验,分析了166份小豆核心种质农艺性状的变异,明确了其生态适应性和可利用价值。结果表明,166份核心种质在广西南宁均表现为直立生长,并能正常成熟收获;在河北唐山有88份种质2年均表现直立生长,有25份不能正常开花结荚。所有种质在南宁的生育期显著缩短,而单株荚数、百粒重等均显著小于唐山。综合分析表明不同种质的生态适应性存在较大差异。最终根据农艺性状的综合表现,筛选出适合南宁种植的小豆种质8份,适合唐山种植的小豆种质10份。

To accelerate the application of the core collection of adzuki bean breeding,we investigated the a- daptability of these germplasm under different environments at continuous years. The results showed that all the 166 core collections were erect and could be harvested in Nanning,while only 88 of them were erect in Tangshan and 25 germplasm even could not mature. The agronomic traits were significantly different between eco-environments, and in Nanning,there were also significant variations from different years. The growth periods of the core collections were significantly shorter in Nanning than in Tangshan,however,the number of pods per plant and 100-seed-weight were much lower. Based on the agronomic traits,8 and 10 germplasms were selected to be used in breeding or production at Nanning and Tangshan,respectively.