Effects of intraspecific variation in rice resistance to aboveground herbivore, brown planthopper, and rice root nematodes on plant yield, labile pools of plant, and rhizosphere soil

摘要: In agricultural ecosystems, most crop cultivars are bred for pest resistance with the aim of resisting aboveground herbivores, but it is unclear if this also affects abundance, composition, and activity underground pests content soil labile pools. A fully factorial greenhouse experiment was carried out, using four rice distinct to shoot herbivore brown planthopper, Nilaparvata lugens, without root nematodes, Hirschmanniella spp., test two hypotheses: (1) resistant planthopper more susceptible nematodes (2) cause greater modification pools rhizosphere than those by inducing leakage plant metabolites. Nematode soluble sugar amino acid contents plant, microbial biomass C N, dissolved organic were analyzed. The abundance substantially increased under all following nematode inoculation. Rice cultivar did not affect numbers decreased negative effects on growth, contents, soil, probably implying that integrated complex mechanisms other only resource allocation involved in belowground herbivores. Our study will contribute a better understanding aboveground–belowground interactions development managements considering ecosystem responses systems.