Correlation between Fall Dormancy and Production Performance of Alfalfa (Medicago sativa)

Background: Selection for fall dormancy (FD) in alfalfa (Medicago sativa) can impact other traits, including dry matter yield (DMY), winter survival rate (WSR) and nutrient compositions. The current study was aimed to screen varieties with greater yield, good quality strong ability thus are more suitable planting Heilongjiang, China may be similar upper-latitude semiarid environments the world. Methods: Eight (Zhaodong, Gongnong No. 2, Caribou, Gold Empress, Adrenalin, Sanditi, Sardi WL525) were planted regional test based on randomized block design mowed during early flowering stage from 2019 2021. DMY, WSR compositions measured by weighing method, field investigation chemical test, respectively. Result: There a significant negative correlation (P less than 0.01) between FD rating WSR, coefficient of 0.956. three-year average DMY 2 greatest (12,745.65 kg ha-1) there (0.766, P DMY. crude protein content (19.29%) varieties. Zhaodong had least neutral detergent fiber (47.76%) acid (30.79%).