New Method for Sugarcane (Saccharum spp.) Variety Resources Evaluation by Projection Pursuit Clustering Model
文献类型： 外文期刊
作者： Zhao, Yong 1 ; Zhang, Yuebin 1 ; Zhao, Jun 1 ; Zan, Fenggang 1 ; Zhao, Peifang 1 ; Deng, Jun 1 ; Wu, Caiwen 1 ; Liu, Jiayong 1 ;
作者机构： 1.Yunnan Acad Agr Sci, Sugarcane Res Inst, Kaiyuan 661699, Peoples R China
关键词： sugarcane variety; projection pursuit clustering; PPC; agronomic/industrial trait; projection direction; projection value
期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）
ISSN：
年卷期： 2022 年 12 卷 6 期
页码：
收录情况： SCI
摘要： In the breeding of new sugarcane varieties, the survey data do not always conform with a normal or linear distribution. To apply non-normal or non-linear data to evaluate new material requires a suitable evaluation model or method. The projection pursuit clustering (PPC) model is a statistical method that does not require making normal assumptions or other model assumptions on sample data, and is suitable to analyze high-dimensional, non-linear, and non-normal data. However, this model has been applied infrequently to crop variety evaluation. In this study, 103 varieties that have been bred over the last 70 years in China were planted, and their main industrial and agronomic traits were collected. Through the exploratory analysis of the data structure characteristics, the PPC model was used to evaluate these sugarcane varieties. The model provided good projection directions of agronomic and industrial traits, with accurate projection values. PPC models could evaluate sugarcane resources well, and the results were objective and reliable. Thus, the PPC model could be used as a new method for crop variety evaluation. At the same time, 51 excellent industrial and agronomic variety resources were screened for application in breeding.
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