Allelopathic effects of Zelkova schneideriana Hand. Mazz root exudates on growth of rape, wheat, maize and tall fescue
Allelopathic effects of Zelkova schneideriana Hand. Mazz root exudates on growth of rape, wheat, maize and tall fescue
- Author(s) Xiao Liu, Yuhan Sun, Chao You, Di Wu, Longfeng Gong and Jichen Xu
- Year: 2023
- Month: November
- Volume: 60
- Pages: 137-146
Intercropping is an efficient way to utilize growth resources and for economic benefits. We evaluated the possibility of Zelkova schneideriana Hand. Mazz intercropping with maize (Zea mays L), wheat (Triticum aestivum L), rape (Brassica rapa C), and tall fescue (Festuca elata K). A total of 39 compounds were identified in Z. schneideriana root exudates by GC-MS analysis; 1,2-benzenedicarboxylic acid, bis (2-methylpropyl) ester had the highest content (50.36 %), followed by phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-4-methyl- (21.56 %). Growth of the test crops was inhibited by root exudates, when applied at 4 mg·ml-1, however, promoted at 2 mg·ml-1. The strongest inhibition was observed in maize and the lowest in tall fescue. The physiological responses of the crops to the root exudates of Z. schneideriana showed similar treads. Malondialdehyde (MDA) content was the most sensitive parameter followed by relative electrical conductivity (REL) and chlorophyll (Chl) content, indicating the trait-specific responses. Rape growth was the most promoted at 2 mg·ml-1, followed by tall fescue. Rape was found the ideal specie for intercropping with Z. schneideriana, followed by tall fescue.
