Creating New Germplasm by Distant Hybridization in Stone Fruits:Ⅰ.Effects of Different Treatments on Cross Compatibility of Distant Hybridization in Stone Fruits

摘要

The effects of different treatments on cross compatibility in distant hybridization werestudied in 69 cross combinations among 9 cultivars of stone fruits. The results showedthat the setting percentage in balloon stage was obviously higher than that in earlyblooming stage. The differences of fruit set between positive and reverse crosses weresignificant. Female parent affected cross compatibility more remarkably than male parentin distant hybridization. The appropriate electrostatic field, He-Ne laser combinedtreatment with 60Co γ-ray and He-Ne laser could improve the pollen germination rate invitro effectively, the fruit set percentage was higher than control, while 60Co γ-raytreatment reduced the pollen germination rate in vitro, and the fruit set percentageobtained by distant hybridization was lower than control.