摘要
为发掘抗线虫甜樱桃砧木,以实生钵苗为试材,采用人工接种的方法,研究‘大叶草樱’对北方根结线虫、花生根结线虫、南方根结线虫和爪哇根结线虫的抗性。结果表明:接种后35d,接种北方根结线虫(60株)、花生根结线虫(59株)、南方根结线虫(58株)和爪哇根结线虫(60株)的‘大叶草樱’实生苗中未形成根结的植株(0级)数分别为1、7、2和8,受害等级为1级的植株数分别为59、52、56和52,病情指数分别为19.7、17.6、19.3和17.3。根据抗性评价标准判定‘大叶草樱’高抗北方根结线虫、花生根结线虫、南方根结线虫和爪哇根结线虫。‘大叶草樱’对4种主要根结线虫的抗性均存在免疫和高抗2种基因型,对北方根结线虫、花生根结线虫、南方根结线虫和爪哇根结线虫免疫型植株分别占群体总量的1.7%、11.9%、3.4%和13.3%。由此可见,‘大叶草樱’可判断为优良的抗根结线虫甜樱桃砧木和种质资源。
In order to find out an excellent root-stock of sweet cherry resisting to major root-knot nematodes, ‘Dayecaoying'pot-grown seedlings were inoculated with four major root-knot nematodes including Meloidogyne hapla, M.arenaria,M.incognita and M.javanica.The result showed that in 35 days after inoculation,the number of ‘Dayecaoying'seedlings without root-knots which were inoculated with M.hapla(60),M.arenaria(59),M.incognita(58)and M.javanica(60)were 1,7,2and 8on level 0and 59,52,59and 52on level 1.Their disease indexes were 19.7,17.6,19.3and 17.3respectively.‘Dayecaoying'was highly resistant to four kinds of root-knot nematodes according to the standard of resistance evaluation.Immune and highly resistant types were found in the seedling colony of‘Dayecaoying'.The separated ratios of the seedlings immune to M.hapla,M.arenaria,M.incognita and M. javanica were 1.7%,11.9%,3.4% and 13.3%respectively.Therefore,‘Dayecaoying'was regarded as an excellent root-stock of sweet cherry and a germplasm resource to root-knot nematodes.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2014年第2期81-85,共5页
Journal of China Agricultural University
基金
国家"948"项目资助(201035)
