砧木对新郁葡萄生长和果实品质的影响

为评价砧木嫁接对南方湿热地区新郁葡萄生长与果实品质的影响,以Gloire、夏黑、抗砧1号、抗砧6号4种材料嫁接的新郁葡萄为试验材料,调查不同砧穗组合的物候期、生长结果习性、果实经济性状、营养成分等指标,分析各砧穗组合差异性,并用主成分分析法对葡萄砧穗组合的果实品质进行了综合评价。结果表明,Gloire、夏黑、抗砧1号、抗砧6号与新郁的砧穗组合均能提高新郁的萌芽率和结果枝率,Gloire与自根苗的总酚含量和总糖含量显著高于夏黑、抗砧1号、抗砧6号,Gloire、抗砧1号的平均粒质量显著高于夏黑和自根苗。主成分分析综合评价表明,4种材料中,Gloire为最适宜新郁葡萄的优良砧木。

Effects of rootstocks on growth and fruit quality of Xinyu grape

In order to evaluate the effects of rootstock grafting on the growth and fruit quality of Xinyu grape in the humid and hot regions of South China, the experimental materials were Xinyu grapes grafted with four different rootstocks Gloire, Summer Black, Kangzhen No.1, Kangzhen No.6. The related indexes of different rootstock-scion combinations were investigated, including phenological period, growth and fruiting habits, fruit economic characteristics, nutrient composition, etc. The differences of rootstock-scion combinations were analyzed, and the fruit quality of grape rootstock-scion combinations was evaluated comprehensively by principal component analysis. The results showed that four rootstock-scion combinations could increase the germination rate and fruiting branch rate of Xinyu, and the total phenol and sugar content of Gloire and self-rooted seedlings were significantly higher than those of Summer Black, Kangzhen No.1, Kangzhen No.6. The average grain weight of Gloire and Kangzhen No.1 were significantly higher than that of Summer Black and self-rooted seedlings. Principal component analysis showed that among the four rootstocks, Gloire was the best one for Xinyu grape.