How fall dormancy benefits alfalfa winter-survival? Physiologic and transcriptomic analyses of dormancy process.

ABSTRACT:

Background

Fall dormancy and freezing tolerance characterized as two important phenotypic traits, have great effects on productivity and persistence of alfalfa (Medicago sativa L.). Despite the fact that one of the most limiting traits for alfalfa freezing tolerance in winter is fall dormancy, the interplay between fall dormancy and cold acclimation processes of alfalfa remains largely unknown. We compared the plant regrowth, winter survival, raffinose and amino acids accumulation, and genome-wide differentially expressed genes of fall-dormant cultivar with non-dormant cultivar under cold acclimation.

Results

Averaged over both years, the non-dormant alfalfa exhibited largely rapid regrowth compared with fall dormant alfalfa after last cutting in autumn, but the winter survi

SUBMITTER: Liu ZY 

PROVIDER: S-EPMC6528297 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature