Tzortzakakis E A, Trudgill D L, Phillips M S
J Nematol. 1998 Mar;30(1):76-80.
The reproduction of single egg-mass isolates of Meloidogyne javanica from Crete that differed in virulence were compared on tomato (Lycopersicon esculentum) genotypes homozygous or heterozygous for the Mi gene. The reproduction of three isolates with partial virulence was much greater on tomato genotypes heterozygous for the Mi gene (cultivars Scala, Bermuda, and 7353) than on two homozygous genotypes (F8 inbred lines derived from Scala). The reproduction of a highly virulent isolate on the homozygous and heterozygous genotypes was similar to that on a susceptible cultivar. These results pose questions regarding the nature of partial virulence and indicate a quantitative effect of the Mi gene in relation to such virulence.
对来自克里特岛、毒力不同的爪哇根结线虫单卵块分离物，在对Mi基因纯合或杂合的番茄（番茄）基因型上的繁殖情况进行了比较。三种具有部分毒力的分离物在对Mi基因杂合的番茄基因型（品种Scala、百慕大及7353）上的繁殖量，比对两种纯合基因型（源自Scala的F8自交系）上的繁殖量大得多。一种高毒力分离物在纯合和杂合基因型上的繁殖情况，与在感病品种上的相似。这些结果引发了关于部分毒力本质的问题，并表明Mi基因对这种毒力具有定量效应。
