Drought resistance index screening and evaluation of lettuce under water deficit conditions on the basis of morphological and physiological differences.

ABSTRACT:

Introduction

Water is one of the important factors affecting the yield of leafy vegetables. Lettuce, as a widely planted vegetable, requires frequent irrigation due to its shallow taproot and high leaf evaporation rate. Therefore, screening drought-resistant genotypes is of great significance for lettuce production.

Methods

In the present study, significant variations were observed among 13 morphological and physiological traits of 42 lettuce genotypes under normal irrigation and water-deficient conditions.

Results

Frequency analysis showed that soluble protein (SP) was evenly distributed across six intervals. Principal component analysis (PCA) was conducted to transform the 13 indexes into four independent comprehensive indicators with a cumulative contribution ratio

SUBMITTER: Li J 

PROVIDER: S-EPMC10540308 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature