Homeostatic responses and growth of Leymus chinensis under incrementally increasing saline-alkali stress.

ABSTRACT: Despite considerable tolerance to salt and alkali stress, Leymus chinensis populations on the southwestern Songnen Plain in northern China are threatened by increasing soil salinity and alkalinity. To explore the species' responses to saline-alkali stress, we grew it in substrates with varying concentrations of nitrogen (N) and phosphorus (P) while applying varying levels of saline-alkali stress (increasing in 14-, 17- or 23 -day intervals). We measured the plants' contents of N and P, and the N:P ratio, and calculated their homeostasis indices (H_N , H_P and H_N:P ) under each nutrient and saline-alkali stress treatment. The N content was found to be more sensitive to saline-alkali stress than the P content. The N and P contents we

SUBMITTER: Li S 

PROVIDER: S-EPMC7931712 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature