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为探明野生樱桃李抗李根癌病种质与基因资源价值,2011年我们以野生樱桃李自然杂交实生苗为试材,采用混合接种发根土壤杆菌(Agrobacterium rhizogens)和根癌土壤杆菌(A.tumefaciens)的方法研究了其对李根癌病的抗性。结果表明,接种后60天,野生樱桃李株最大瘤径为0～10.5 mm,群体平均最大瘤径为2.7 mm,根据抗性评价标准判定野生樱桃李高抗李根癌病。野生樱桃李对李根癌病的抗性存在广泛的株间分离现象,其实生群体中存在免疫、高度抗病、中度抗病、低度抗病、感病和易感病6种类型植株,这6种类型植株分别占实生群体总数的20%、42%、20%、10%、5%和3%。野生樱桃李实生后代中存在大量的对李根癌病免疫植株,是珍贵的抗李根癌病种质与基因资源树种。
In order to explore the value of wild cherry plum anti-Lee germplasm resources and genetic resources, in 2011 we wild saplings of Li cherry hybrid seedlings as a test material, the mixed inoculation of Agrobacterium rhizogens and Agrobacterium tumefaciens A. tumefaciens) method to study its resistance to Ligen cancer. The results showed that the maximum diameter of wild cherry plum was 0-10.5 mm and the average maximum diameter of the population was 2.7 mm 60 days after inoculation. There are a wide range of isolations between wild cherry plum cultivars on Ligen’s disease. There are six types of plants in the live population, which are immune, highly resistant, moderately resistant, low resistance, susceptible and susceptible These six types of plants account for 20%, 42%, 20%, 10%, 5% and 3% of the total number of live births respectively. There are a large number of wild cherry plum Lee offspring cancer immune plants, is a rare anti-Lee germplasm germplasm and genetic resources tree species.