Study on Growth of Common Rootstocks and Their Effect on Fruit Quality of ‘Kyoho’(Vitis vinifera x V. labruscana) Grape in Taiwan
Date Issued
2014
Date
2014
Author(s)
Liu, Yen-Ti
Abstract
This study consisted of two experiments. Experiment one compared the difference in growth among 1202, 5C, 420A, and ‘Kyoho’ grape cuttings. Experiment two investigated the effect of mentioned root stocks on berry quality of Sakurai Kyoho.
In the first experiment, budburst, root, aboveground part, cutting wood, canopy and shoot, leaf area, and number of leaves and internodes of the three rootstocks and ‘Kyoho’ cuttings were periodically sampled and measured on 29 May (90 days after cutting), 26 June (118 days after cutting), 18 September (202 days after cutting) 2009, and 29 January 2010 (336 days after cutting). The result showed that fresh weight of cutting woods of 1202 was greater than the others on the first measurement but not different from the others later. Fresh weight of root was significantly different between 1202 and 5C cuttings on 29 May but was not different on the other measuring dates. Fresh weight of shoot of 5C was greatest on all sampling dates. Lengths of shoots were significantly different between 5C and ‘Kyoho’ cuttings on all sampling dates. 5C cuttings had the earliest budburst followed by 120c, 420A, and Kyoho. Fresh weight of aboveground part was greatest in 5C. Overall, 5C had the best growth while Kyoho had the poorest growth. The result was similar to the performance of mature ‘Kyoho’ vines on the mentioned root system. Nevertheless, optimal growth and yield can be managed in mature own-rooted ‘Kyoho’ vines regardless of the short longevity, weak disease resistance, and relative low cropload.
In the second experiment, fruit clusters of own-rooted ‘Sakurai Kyoho’ and grafted vines on 1202, 5C, and 420A rootstocks were harvest and berry quality, i.e. number of berries per cluster, weight of fruit cluster and berries, total soluble solids content, berry skin coloration, and berry shedding, at harvest and after cold storage was periodically measured. The result showed that berries from own-rooted vines and vines on 420A rootstock had the best overall quality. These information will help growers on the choice of rootstocks in Taiwan.
Subjects
砧木
葡萄屬
嫁接
自根系
親和力
Type
thesis
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