SELECTION OF ALFALFA (Medicago sativa L.) HYBIRD PARENTS AND HETEROSIS ANALYSIS OF F1 HYBRIDS

Heterosis is an effective way to increase yield and improve quality in alfalfa breeding. The key issue for efficiently use of heterosis identify parents having potential producing hybrid combinations with higher performance. This study aimed analyze genetic distance between the 48 accessions, combine different combinations. results showed that mating ability combination which both are tetraploid greater than diploid or parental ploidy. When ploidy levels parents, as female parent better parent. he a male more Moreover, CYK2ｘHH10 high CYK4xHH10 relative seed setting rate should be possible breed yielding hybrid, could used candidate materials further research.