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Correlation, Principal Component and Cluster Analysis of Main
Agronomic Traits of Brassica oleracea L. var. italica
Zhu Zhangzhi,Zhang Zhixian,Liu Jun,Xie Liujie,Tan Guoyin and He Daogen
Chinese Agricultural Science Bulletin . 2015, (4): 73 -79 .  DOI: 10.11924/j.issn.1000-6850.2014-2237