中国油料作物学报2019，Vol.41Issue(1)：81-91,11.DOI:10.7505/j.issn.1007-9084.2019.01.011
云南间作大豆耐荫性综合评价及鉴定指标筛选
Comprehensive evaluation and screening identification index of shade tolerance of intercropping soybean
摘要
Abstract
The main purpose of the present study was to explore the methods of evaluating shade tolerance, analyze the shade tolerance of different soybean genotypes, screen suitable evaluation indicators of shade tolerance, and establish a mathematical evaluation model of shade tolerance. 44 soybean cultivars (lines) were treated under shading and natural light conditions in a field experiment. Corn-soybean intercropping system created the shading conditions in the field, and soybean single planting was used as control. 10 major morphological and yield characteristics of soybean cultivars (lines) were investigated during the mature period, based on the coefficient of the shade tolerance in each index, the shade tolerance of soybeans was evaluated with multivariate statistical method.The results showed that compared with the control, the changing trend of each characteristic and amplitude were different, each index existed in varying degrees of correlation. 4 independent comprehensive components were obtained from 10 single index by principal component analysis, which reflected 79. 77％ information of all traits information. The method of membership function was adopted to calculate comprehensive shade tolerance value (D) and make cluster analysis, and 44 soybean cultivars (lines) were divided into 3 shade tolerance types, Class I was the high shade tolerance type, and Class II was the medium shade tolerance type. Class III was the low shade tolerance type. A mathematical evaluation model for shade tolerance of soybean was established by stepwise regression analysis. Based on the model, 8 index including plant height, main stem node number, effective branch, pods per plant, seeds per plant, yield per plant, seeds per pod and lodging could be used for identifing intercropping soybean varieties to shade tolerance in Yunnan Province.关键词
大豆/耐荫性/主成分分析/隶属函数法/系统聚类分析/逐步回归Key words
soybean/shade tolerance/principal components analysis/membership function method/system cluster analysis/stepwise regression analysis method分类
农业科技引用本文复制引用
赵银月,詹和明,代希茜,单丹丹,王铁军..云南间作大豆耐荫性综合评价及鉴定指标筛选[J].中国油料作物学报,2019,41(1):81-91,11.基金项目
国家重点研发计划项目 (2017YFD0101500) （2017YFD0101500）
国家现代农业产业技术体系建设专项 (CARS-04-CES29) （CARS-04-CES29）
