Anwar S A, McKenry M V, Faddoul J
J Nematol. 2000 Sep;32(3):265-70.
Variability in penetration, development, and reproduction of two resistance-breaking field pathotypes (pt.) of Meloidogyne arenaria, M. incognita, and a population of mixed Meloidogyne spp. virulent to grape hosts were compared on two resistant Vitis rootstocks 'Freedom' and 'Harmony' in separate tests. 'Cabernet Sauvignon' was included as a susceptible host to all four nematode populations. Secondstage juveniles (J2) of the mixed population failed to penetrate Freedom roots. By contrast, 6% of J2 in the M. incognita population penetrated Freedom roots but did not develop beyond the swollen J2 stage. The two resistance-breaking populations of M. arenaria differed in their virulence except on susceptible roots of Cabernet Sauvignon. More J2 of M. arenaria pt. Freedom penetrated Freedom roots and reached adult stage than did M. arenaria pt. Harmony. Later life stages of M. arenaria pt. Freedom occurred earlier and in greater numbers in Harmony roots than did M. arenaria pt. Harmony. Reproduction of M. arenaria pt. Freedom was greater in Freedom and Harmony roots than M. arenaria pt. Harmony. Thus, one population of M. arenaria is highly virulent and the other is moderately virulent.
在单独的试验中，比较了南方根结线虫、爪哇根结线虫的两种抗药性田间致病型（pt.）以及一种对葡萄寄主有毒性的混合根结线虫群体在两种抗性葡萄砧木“Freedom”和“Harmony”上的侵入、发育和繁殖变异性。“赤霞珠”作为所有四个线虫群体的感病寄主被纳入试验。混合群体的二龄幼虫（J2）未能侵入Freedom砧木的根系。相比之下，爪哇根结线虫群体中有6%的J2侵入了Freedom砧木的根系，但未发育到J2肿胀阶段之后。南方根结线虫的两个抗药性群体除了在赤霞珠的感病根系上之外，其毒性存在差异。相比南方根结线虫Harmony致病型，南方根结线虫Freedom致病型有更多的J2侵入Freedom砧木的根系并发育到成虫阶段。南方根结线虫Freedom致病型的后期虫态在Harmony砧木根系中出现得更早且数量更多。相比南方根结线虫Harmony致病型，南方根结线虫Freedom致病型在Freedom和Harmony砧木根系上的繁殖能力更强。因此，南方根结线虫的一个群体毒性很强，另一个群体毒性中等。
