Abstract：Taking‘Yongtian No.3’own-root plants,put on the ground of sunlight greenhouse as control(CK),the approach grafting (T1)inside of sunlight greenhouse,the own-root approach grafting of‘Yongtian No.3’(T2),and part of own-root plants(T3)also put in small arch tunnel as disposal,the effects of grafting and conditions after grafting on flower bud differentiation and flower development of pellicle melon were studied.The results indicated that among all disposals in the small arch tunnel,the elementary florescence and prosperous florescence of the own-root plants were 3-4 days earlier,and the sub-vine female flower rate was very significantly than the other 2 grafting disposals.The quality of female flower was all under CK.The elementary florescence and prosperous florescence of CK were 1-2 days earlier than T3,and the sub-vine female flower rate was very significantly than other disposals in small arch tunnel.Microscope and olefin slice up show that,all disposals in the small arch tunnel were one leaf shorter than CK,which show that the approach grafting had certain effects on flower bud differentiation and flower development,as the elementary florescence and prosperous florescence were delayed 3-4 d,and the sub-vine female flower rate declined 6.1-15.2 percentage point.But the high night temperature and cover light had even more effects on the plants after grafting.
