Study on pollination and seed setting characteristics of two grape cultivars
[Objective]To study the pollination and seed setting characteristics of grape varieties and pro-vide basic data for grape hybrid breeding.[Methods]Taking Xinyu and Lvzhoubaoshi as testing materials,experiments on the natural pollination,self pollination,emasculation without pollination,and artificial pollina-tion of Shine Muscat and Kunxiangwuhe pollen at different times after emasculation were carried out.The fruit setting rate of the ear was counted one month after pollination hereinafter referred to as fruit set rate,and the pollination and seed setting characteristics of Xinyu and Lvzhoubaoshi were analyzed.[Results]The average fruit setting rate of Xinyu grape under natural conditions was 34.32％,and the average fruit setting rate of self pollination was 30.79％.The average fruit setting rate of Lvzhoubaoshistones under natural conditions was 24.21％,and the average fruit setting rate of self pollination was 18.67％.About 3.51％of the flower buds in Xinyu completed closed pollination two days before the first flowering period,about 5.22％of the flower buds in Lvzhoubaoshi completed closed pollination,about 19.08％of the flower buds in Xinyu completed closed pol-lination in the first flowering period,and about 24.39％of the flower buds in Lvzhoubaoshi completed closed pollination.The average fruit setting rate of the four hybrid combinations in the morning pollination treatment was higher than that in the evening pollination treatment,among which,the combination of Xinyu+Kunxiang-wuhe,Xinyu+Shine Muscat,Lvzhoubaoshi+Shine Muscat were significantly different but the difference be-tween Lvzhoubaoshi+Kunxiangwuhe was not significant.The fruit setting rate of the two combinations with Shine Muscat as the male parent was higher than that of the two combinations with Kunxiangwuhe as the male parent.The average fruit setting rate of treatment 2 pollinated in the morning was the highest,and that of treat-ment 3 pollinated in the evening was the lowest.The average fruit setting rate of treatment 1 and treatment 2 pollinated in the morning and evening was higher than that of treatment 3.The average fruit setting rate of treatment 1 and treatment 2 was different due to different combinations.[Conclusion]Both Xinyu and Lvzhoubaoshistone cultivars have closed flower pollination,and the closed flower pollination degree of Lvzhou-baoshi is higher than that of Xinyu.The best emasculation time of Xinyu and Lvzhoubaoshi grapes in Turpan should be in the first 3-4 days of the first flowering period,and the best pollination measures should be started when stigma mucus appears,once a day,and three times in total.
万方数据
维普
