A study of self-compatibility and pollinations and separation of offspring traits of alfalfa
Eight alfalfa cultivars from different sources were used to study the characteristics of self-compatibility and pollination approaches. The results showed that the self-compatibility of alfalfa a-mong the cultivars was different, and the self-compatibility indexes of all materials were ranged from 0 to 1.39. In which, the self-compatibility index of 2 cultivars were over 1.00, 5 cultivars was from 1.00 to 0, and 1 cultivar was 0. The phenomenon of gradual death in batches was found in the S1 growth course, and the final survival rate was only 34.80% and 32.30%. the seed rate of self-cousins is the highest in 4 self-pollinations, so the self-pollination of self-cousins was appropriate to popularize and apply in alfalfa self-pollinate.