Studies on Early-mature and Classification in Squash (Cucurbita pepo L.) Using Principal Component Analysis
Ouyang Xinxing, Xu Yong, Zhang Haiying, Wang Yongjian
ACTA AGRICULTURAE BOREALI-SINICA . 1999, (2): 125 -128 .  DOI: 10.3321/j.issn:1000-7091.1999.02.025