Physiological effects of the combined stresses of freezing-thawing, acid precipitation and deicing salt on alfalfa seedlings.

ABSTRACT:

Background

Frequent freeze-thaw phenomena, together with widely used deicing salt and intense acid precipitation, often occur in northeastern China, causing damage to various aspects of plants, such as the permeability of biological membranes, osmotic adjustment, and photosystems. Aiming to explore the resistance of alfalfa to freezing-thawing (F), acid precipitation (A) and deicing salt (D), this study used Medicago sativa cv. Dongmu-70 as the experimental material, and the contents of malondialdehyde (MDA), soluble protein, soluble sugars, proline and chlorophyll were evaluated.

Results

As the temperature decreased, the MDA content in the seedlings of the group under combined stress (A-D-F) increased and was significantly higher than that of group F (by 69.48 ~ 136.40%). C

SUBMITTER: Bao G 

PROVIDER: S-EPMC7216480 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature