%A WANG Li-Xia,CHENG Xu-Zhen,WANG Su-Hua,ZHU Xu,LIU Zhen-Xing %T Adaptability and Phenotypic Variation of Agronomic Traits in Mungbean Core Collection under Different Environments in China %0 Journal Article %D 2014 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2014.00739 %P 739-744 %V 40 %N 04 %U {https://zwxb.chinacrops.org/CN/abstract/article_5625.shtml} %8 2014-04-12 %X

Mungbean (Vigna radiata L. Wilczek) is an important traditional pulse crop in China. However, its genetic breeding is much lagged. There are abundant mungbean germplasm resources conserved in the national gene bank. It is essential to evaluate diversity and adaptability of germplasm resources for their accelerating use in genetic breeding. In the present study, we assessed the genetic variations and environmental adaptability of mungbean core collection at Haidian of Beijing, Tangshan of Hebei, and Nanyang of Henan province, respectively. The results showed that growth habit and podding habit were affected by eco-environments, but they were not always agreeable with each other, some erect materials in growth were indeterminate in podding, and some erect in growth in south region performed climbing in north regions. All accessions in the core collection were mature at different eco-regions, but their growth period, plant height, number of branch per plant, number of pod per plant, number of seed per pod, pod length and 100-seed-weight, varied greatly in different regions. Based on these quantitative traits, we selected 26 germplasm as elite ones that may be useful for local production or breeding. According to the Mixed linear model, the effects of genetic composition for the seven quantitative traits were also analyzed. The results showed that there were differences among accessions and environment effects, and the genotypic effects were higher on pod length and 100-seed weight than on other traits, while environmental effects was the highest on growth period. The residued effects were the highest on the number of seeds per pod, while the interaction effect between genotypes or phenotypes not significant for any two of the seven traits. The environmental adaptability for all the traits was also analyzed by using Jackknife repeated sampling, and four useful in breeding for variety with wide adaptability were selected.