USDA-ARS Crop Science Research Laboratory, P.O. Box 5248, 39762, Mississippi State, MS, USA.
Theor Appl Genet. 1990 Dec;80(6):810-2. doi: 10.1007/BF00224197.
A diallel cross of eight maize, Zea mays L., inbred lines was analyzed for reaction to two species of root-knot nematodes, Meloidogyne arenaria (Neal) Chitwood and M. javanica (Treub) Chitwood. Egg production following inoculation of F1 hybrid seedlings with nematode eggs was determined in a greenhouse experiment. Data were analyzed using Griffing's Method 4, Model I. General combining ability was a significant source of variation in egg production of both M. arenaria and M. javanica; specific combining ability was not a significant source of variation for either. The correlation between egg production of the two nematode species on the 28 F1 hybrids was highly significant. Hybrids with Mp313 or SC213 as one parent were the most resistant to both species. This indicates that germ plasm is available for developing inbred lines and hybrids with resistance to both M. arenaria race 2 and M. javanica.
对 8 个玉米自交系的双列杂交进行了分析，这些自交系对两种根结线虫，即南方根结线虫（Meloidogyne arenaria（Neal）Chitwood）和爪哇根结线虫（M. javanica（Treub）Chitwood）的反应。在温室实验中，通过接种线虫卵来测定 F1 杂种幼苗的卵产量。使用格里芬的方法 4，模型 I 对数据进行了分析。一般配合力是两种南方根结线虫和爪哇根结线虫卵产量的重要变异来源；特定配合力不是这两种线虫的重要变异来源。两种线虫在 28 个 F1 杂种上的产卵量之间存在高度显著的相关性。以 Mp313 或 SC213 作为亲本之一的杂种对两种线虫都具有最高的抗性。这表明可利用种质资源来培育对南方根结线虫 2 号和爪哇根结线虫均具有抗性的自交系和杂种。
