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为探明野生樱桃李抗根结线虫种质资源的价值,以实生钵苗为试材,采用人工接种等方法,研究其对北方根结线虫和花生根结线虫的抗性。结果表明:接种后30d,野生樱桃李根系中北方根结线虫、花生根结线虫的雌成虫数量分别占2龄线虫接种量的0.16%和0.03%,依据抗性评价标准判定其高抗北方根结线虫和花生根结线虫;接种北方根结线虫的群体中包含免疫、高抗和中抗3种类型,分别占群体总数的46%、48%和6%;接种花生根结线虫的包含免疫和高抗2种类型,分别占群体总数的56%和44%;接种北方根结线虫和花生根结线虫的植株未被侵染率分别为46%和52%,所有供试植株根系表面均未发现线虫卵块。野生樱桃李高抗北方根结线虫和花生根结线虫,其对北方根结线虫、花生根结线虫的抗性均存在显著的株间分离现象;抗侵入、抗发育和抗繁殖是其对北方根结线虫和花生根结线虫的主要抗性机制;野生樱桃李是抗根结线虫核果类果树砧木种质资源树种。
In order to explore the value of germplasm resources of root-knot nematode infection in wild cherry plum, seedlings of seedling were used as test materials and artificial inoculation methods were used to study their resistance to root-knot nematodes and pest root-knot nematodes. The results showed that the number of female adults of root-knot nematode and peanut root-knot nematode in wild plum roots accounted for 0.16% and 0.03% of the inoculated second-instar nematodes respectively 30 days after inoculation, and their resistance to northern root Nematode and Peanut root-knot nematodes. The groups inoculated with M. incognita contained three types of immunity, high resistance and moderate resistance, accounting for 46%, 48% and 6% of the total, respectively. And resistant to 2 types, accounting for 56% and 44% respectively of the total population. The uninfected rates of plants inoculated with M. incognita and M. peanut were 46% and 52%, respectively. No nematode egg masses were found. The results showed that there was a significant segregation between the resistant strains of Rhizoctonia solani and Peanut root-knot nematodes in the resistance of wild cherry plum to North root knot nematode and peanut root-knot nematode. The anti-invasion, Nematode and peanut root-knot nematodes; wild cherry plum is the rootstock germplasm resource tree of root-knot nematode and stone fruit.