Abstract

The study aimed at accessing the effects of mowing on the growth and cadmium (Cd) accumulation of the first post-grafting generation of potential Cd-hyperaccumulator plant Solanum photeinocarpum through the pot and plot experiments. Four grafting treatments were employed such as ungrafted (UG), self-rooted grafting by the same S. photeinocarpum seedling (SG), self-rooted grafting by two different development stages of S. photeinocarpum seedlings (DG), and grafting on the rootstock of wild potato (PG). The biomass, Cd content, and Cd extraction amount of S. photeinocarpum shoots significantly decreased with the increase of mowing times in the pot and plot experiments. The order of the grafting on the biomass, Cd content, and Cd extraction amountof in the first, second, third mowing shoots were PG > DG > SG > UG. For the Cd extraction amountof total moving shoots, SG, DG, and PG increased by 20.42%, 35.54%, and 52.94%, respectively, in the pot experiment, and increased by 11.56%, 26.28%, and 44.90%, respectively, in the plot experiment, compared with the UG. Therefore, mowing provides an insight into the phytoremediation ability of S. photeinocarpum to Cd.

摘要

这项研究旨在通过盆栽试验研究割草对潜在的Cd超富集植物Solanum photeinocarpum的第一代嫁接后代生长和镉（Cd）积累的影响。进行了四种嫁接处理，例如未嫁接（UG），相同的S. photeinocarpum幼苗（SG）进行自根嫁接，通过S. photeinocarpum幼苗（DG）的两个不同发育阶段进行自根嫁接以及嫁接在砧木上野土豆（PG）。光果链霉菌的生物量，Cd含量和Cd提取量在盆栽和田间试验中，随着修剪时间的增加，幼芽显着减少。第一，第二，第三mo割枝条的嫁接顺序为生物量，Cd含量和Cd提取量为PG> DG> SG> UG。在盆栽试验中，总移动枝的镉提取量分别为SG，DG和PG分别增加20.42％，35.54％和52.94％，而盆栽试验中SG，DG和PG分别增加11.56％，26.28％和44.90％。情节实验，与UG进行比较。因此，割草提供了对光腐链霉菌对Cd的植物修复能力的见解。