摘要
对甘肃省紫花苜蓿地方类型的２１个抗旱性鉴定指标进行了实验测定，根据这些指标值，应用系统聚类的方法进行分级聚类，使其归属于５个抗旱等级。不同抗旱等级分类的结果为：强抗旱性：民勤苜蓿、环县苜蓿、会宁苜蓿、榆中苜蓿、甘谷苜蓿；抗旱性：定西苜蓿；中抗旱性：通渭苜蓿、镇原苜蓿、秦安苜蓿、临洮苜蓿、庆阳苜蓿，宁县苜蓿；弱抗旱性：礼县苜蓿；最弱抗旱性：天水苜蓿。
The native types of lucerne (Medicago sativa) in Gansu province were planted, observed and then classified with cluster analysis according to 21 indices of drought resistance determined during their growth. Five ranks (1-5) were obtained from the analysis, with Rank 1 as the most drought resistant, while Rank 5 as the least. The classification was as follows: R 1-Minqin, Huanxian, Huining, Yuzhong, Gangu; R 2-Dingxi; R 3-Tongwei, Zhenyuan, Qinan, Lintao, Qingyang, Ningxian; R 4-Lixian; and R 5-Tianshui.
出处
《草业科学》
CAS
CSCD
北大核心
1998年第6期7-10,共4页
Pratacultural Science
关键词
紫花苜蓿
地方类型
抗旱等级
分级聚类
苜蓿
native types of lucerne, drought-resistance grades, classification cluster
