Herman M, Hussey R S, Boerma H R
J Nematol. 1988 Jan;20(1):79-84.
Interactions among Meloidogyne incognita, Pratylenchus brachyurus, and soybean genotype on plant growth and nematode reproduction were studied in a greenhouse. Coker 317 (susceptible to both nematodes) and Gordon (resistant to M. incognita, susceptible to P. brachyurus) were inoculated with increasing initial population densities (Pi) of both nematodes individually and combined. M. incognita and P. brachyurus individually usually suppressed shoot growth of both cultivars, but only root growth on Coker 317 was influenced by a M. incognita x P. brachyurus interaction. Reproduction of both nematodes, although dependent on Pi, was mutually suppressed on Coker 317. P. brachyurus reproduced better on Gordon than on Coker 317 but did not affect resistance to M. incognita. Root systems of Coker 317 were split and inoculated with M. incognita or P. brachyurus or both to determine the nature of the interaction. M. incognita suppressed reproduction of P. brachyurus either when coinhabiting a half-root system or infecting opposing half-root systems; however, P. brachyurus affected M. incognita only if both nematodes infected the same half-root system.
在温室中研究了南方根结线虫、短体线虫与大豆基因型之间对植株生长和线虫繁殖的相互作用。将科克317（对两种线虫均敏感）和戈登（对南方根结线虫有抗性，对短体线虫敏感）分别单独接种以及联合接种两种线虫，接种密度逐步增加。南方根结线虫和短体线虫单独接种时通常会抑制两个品种的地上部生长，但只有科克317的根系生长受南方根结线虫×短体线虫相互作用的影响。两种线虫的繁殖虽然依赖于初始接种密度，但在科克317上相互抑制。短体线虫在戈登上的繁殖情况优于科克317，但不影响对南方根结线虫的抗性。将科克317的根系分开，分别接种南方根结线虫或短体线虫或两者，以确定相互作用的性质。南方根结线虫无论是与短体线虫共居于半条根系还是感染相对的半条根系，都会抑制短体线虫的繁殖；然而，只有当两种线虫感染同一条半条根系时，短体线虫才会影响南方根结线虫。
