辣椒对南方根结线虫、北方根结线虫和爪哇根结线虫抗性的辣椒栽培品种特性研究
Characterization of Capsicum chinense Cultigens for Resistance to Meloidogyne arenaria, M. hapla, and M. javanica.
作者信息
Thies Judy A, Fery Richard L
机构信息
Research Plant Pathologist.
Research Geneticist, U.S. Vegetable Laboratory, Agricultural Research Service, U.S. Department of Agriculture, 2875 Savannah Highway, Charleston, SC 29414.
出版信息
Plant Dis. 2001 Mar;85(3):267-270. doi: 10.1094/PDIS.2001.85.3.267.
Four Capsicum chinense cultigens with known reactions to Meloidogyne incognita were characterized for resistance to M. arenaria races 1 and 2, M. hapla, and M. javanica, in greenhouse and growth-chamber tests. The M. incognita-resistant cultigens PA-353, PA-398, and PA-426 exhibited high resistance to M. arenaria race 1; the M. incognita-susceptible PA-350 was susceptible to M. arenaria race 1. M. arenaria race 2 and M. javanica were not highly pathogenic to any of the C. chinense cultigens. PA-353, PA-398, and PA-426, however, supported an average of 98.1 and 94.8% fewer (P < 0.05) M. arenaria race 2 and M. javanica eggs per gram fresh root, respectively, than PA-350. M. hapla was pathogenic to all four C. chinense cultigens. PA-353, PA-398, and PA-426 will be useful sources of resistance to M. arenaria races 1 and 2, M. javanica, and M. incognita, for developing resistant habanero pepper cultivars; however, an alternative source of resistance must be identified for M. hapla.
在温室和生长室试验中，对4种已知对南方根结线虫有反应的中国辣椒栽培品种进行了对花生根结线虫1号和2号小种、北方根结线虫和爪哇根结线虫的抗性鉴定。抗南方根结线虫的栽培品种PA - 353、PA - 398和PA - 426对花生根结线虫1号小种表现出高抗性；感南方根结线虫的PA - 350对花生根结线虫1号小种敏感。花生根结线虫2号小种和爪哇根结线虫对任何一种中国辣椒栽培品种都没有高度致病性。然而，与PA - 350相比，PA - 353、PA - 398和PA - 426每克鲜根上的花生根结线虫2号小种和爪哇根结线虫卵的数量分别平均减少了98.1%和94.8%（P < 0.05）。北方根结线虫对所有4种中国辣椒栽培品种都有致病性。PA - 353、PA - 398和PA - 426将成为培育抗根结线虫哈瓦那辣椒品种时对花生根结线虫1号和2号小种、爪哇根结线虫和南方根结线虫的有用抗性来源；然而，必须为北方根结线虫鉴定出另一种抗性来源。
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