Peach seedling growth in replant and non-replant soils after inoculation with arbuscular mycorrhizal fungi
Peach seedling growth in replant and non-replant soils after inoculation with arbuscular mycorrhizal fungi
复制标题
DOI：
10.1016/j.soilbio.2006.03.012
复制
发表时间：
2006-09
影响因子：
9.7
通讯作者：
K. L. Rutto;F. Mizutani
中科院分区：
文献类型：
--
作者：
K. L. Rutto;F. Mizutani
连续两季研究了补种和非补种土壤中预接种丛枝菌根真菌（AMF）对桃苗移栽后生长的影响。在无菌培养基中培养的幼苗，预先接种了土基接种剂，与未接种对照一起移栽于补种和非补种的田间土壤中。预接种的幼苗移栽在非再植土壤中，第一年的初生长量较大。无论预接种菌根与否，未补种土壤的株高、侧枝长和枝数最高。同样，在未补种的土壤中，幼苗的生物量产量显著更高，但处理之间和处理内部的茎/根比和组织矿物质含量没有显著差异。在补种和未补种土壤中，原生AMF侵染率都很高，即使未接种的幼苗在第一季后也有较高的侵染率。一般情况下，复植土壤菌根活性较低，孢子数量较多，而未复植土壤菌根活性较低，孢子数量较多。土壤病害对植物代谢产生负面影响，限制了植物寄主支持菌根共生的能力。
The effect of pre-inoculation with arbuscular mycorrhizal fungi (AMF) on post-transplant growth of peach seedlings in replant and non-replant soils was studied for two successive seasons. Seedlings raised in sterile media and pre-inoculated with soil-based Gigaspora margarita inoculum were transplanted in replant and non-replant field soils alongside non-inoculated controls. Pre-inoculated seedlings transplanted in non-replant soils showed greater initial growth in the first year. Plant height, and lateral shoot length and number was highest in non-replant soils irrespective of mycorrhizal pre-inoculation. Similarly, biomass yield was significantly higher in seedlings in non-replant soils, though there were no significant differences in shoot/root ratios, and in tissue mineral content between and within treatments. Seedling infection by indigenous AMF was high in both replant and non-replant soils, and even non-inoculated seedlings recorded high infection levels after the first season. Generally, mycorrhizal activity was lower, and spore populations higher in replant soils, while the opposite was true in non-replant soils. It seems that soil sickness has a negative impact on plant metabolism and limits the capacity of the plant host to support the mycorrhizal symbiosis.