Abstract

A pot experiment was designed to explore the effects of different post-grafting generations of Solanum photeinocarpum Nakamura et Odashima intercropping on growth and cadmium (Cd) accumulation in soybeans (varieties: “Zaodou” and “Liaoxian”). Post generation of S. photeinocarpum (ungrafted, grafted on eggplant, potato, and tomato, respectively) were utilized to intercrop with two varieties of soybean in Cd-contaminated soil. Soybean monoculture was employed as a control. Consequently, intercropping with different post-grafting S. photeinocarpum generation, except for tomato rootstock grafts post-generation, could reduce soybean biomass and photosynthetic pigment content. Additionally, all S. photeinocarpum post-grafting generations had the capacity to reduce Cd content in soybean when intercropping, while tomato rootstock grafts post-generation exhibited an adequate ability to accumulate Cd in S. photeinocarpum compared to the ungrafted treatment. In particular, tomato rootstock grafts post-generation could effectively decrease Cd content in soybean organs by 14.09–62.13%, relative to soybean monoculture, but increased shoot Cd content and shoot Cd extraction of S. photeinocarpum by 10.33–13.49% and 10.38–12.03%, respectively, compared to the ungrafted treatment. Thus, tomato rootstock grafting may enhance the ability of post-grafting generation of S. photeinocarpum to remediate Cd-contaminated soil, and this grafting was able to reduce Cd accumulation in soybean.

摘要

设计了盆栽试验，以研究不同嫁接后代的中果茄和小岛间作对大豆生长和镉（Cd）积累的影响（品种：“枣斗”和“廖县”）。利用后世生的S. photeinocarpum（未嫁接，分别嫁接到茄子，马铃薯和番茄上）在镉污染的土壤中与两种大豆进行间作。大豆单培养用作对照。因此，除了嫁接后的番茄砧木嫁接外，与嫁接后的不同光合链霉菌间作可以减少大豆的生物量和光合色素含量。此外，所有的S. photeinocarpum间作时，后代具有降低大豆中Cd含量的能力，而与未移植的处理相比，后代的番茄砧木移植物具有在光荚果链霉菌中积累Cd的足够能力。尤其是，番茄砧木移植物代后能有效地14.09-62.13％，降低大豆器官镉含量，相对于单一种植大豆，但增加的枝条镉含量及镉拍提取少花龙葵的10.33-13.49％和10.38-12.03与未移植的处理相比，分别为％。因此，番茄砧木嫁接可以增强光后链霉菌的嫁接后生成能力。 来修复受Cd污染的土壤，这种嫁接能够减少Cd在大豆中的积累。