摘要
在８种苹果砧木上接种南京毛刺线虫，以病株率为评价指标，用聚类分析方法筛选出朱列涅特和黄海棠为抗性砧木，山定子和新疆海棠为感病砧木，平邑甜茶、新疆野苹果、莱芜难咽和八楞海棠为中感砧木；确定了相对长势指数、相对根系活力和根际病原线虫增量指数３个评价抗性的量化指标，并分别进行聚类分析，分类结果与筛选结果一致。
The resistance screening of 8 apple rootstocks to nematode Trichodorus nanjingensis was conducted in 1995～1996. The infection rate (IR) was used as an index to evaluate the resistance of the rootstocks. Based on the cluster analysis, the 8 rootstocks were divided into 3 groups: I. resistant rootstocks, including Malus prunifolia var. Borkh. and M. prunifolia Borkh. ; Ⅱ. moderately susceptiple rootstocks, including M. hupehensis Rehd. , M. sieversii Roem. , M. micromalus Makino cv. Baleng-haitang and M. micromalus Makino cv. Laiwunanyan; Ⅲ. sensitive tootstocks, including M. baccata Borkh. and M. domestica. Three quantitive indexes, named relative vigor index (RVI) , relative root vigor (RRV) and nematode increment index (II) were defined and they could be used in the evaluation of nematode resistance of apple rootstocks.
出处
《园艺学报》
CAS
CSCD
北大核心
1998年第1期1-5,共5页
Acta Horticulturae Sinica
关键词
苹果砧木
南京毛刺线虫
抗性筛选
Apple rootstock
Trichodorus nanjingensis
Resistance screening
