Effect of salt stress tolerance of four pear rootstock clones on the salt resistance of their grafted and the involvement of possible mechanisms.

ABSTRACT: Soil salinity affects the distribution of fruit trees and limits the development of the fruit industry. Rootstock plays an important role in improving the stress resistance of fruit trees.This study investigates the effects of four pear rootstock clones -QNA201 (Pyrus calleryana Decne.), QAUP-1 (P. ussuriensis Maxim), QingzhenD1 (P. communis L.× P. bretschneideri Rehd) and OHF40 (P. communis L) on the salt tolerance of the grafted variety 'Luxiu'(P.pyrifolia Nakai cv.'Luxiu') and explores the underlying mechanisms. Rootstocks and grafted seedlings were subjected to different concentrations of NaCl treatments (0 mM, 100 mM, and 200 mM for rootstocks; 200 mM for grafted seedlings). A number of physiological and biochemical indexes were determined, including salt injury index, chlorophyll con

SUBMITTER: Wang J 

PROVIDER: S-EPMC12804771 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature