Abstract
Storage of large amounts of carbohydrate in the fruit, roots and wood during summer and autumn is vital to produce both high-quality kiwifruit and also to support vine development in the following season. Our study showed that new shoot growth of ‘Hayward’ vines occurs during the first 100 days after budbreak (DAB) in spring. During this period, vine reserves became depleted, with total carbohydrate concentrations in both roots and wood decreasing by 3-fold and root death occurring in late spring. Although shoots became autotrophic by 30-40 DAB, the concentrations of reserves continued to decline until the end of shoot growth, indicating that insufficient carbohydrate was available from photosynthesis to support the growth and metabolism of the rest of the vine before the end of shoot growth. Once the canopy was established and fruit set had occurred, photosynthate supply was shared between storage in roots and wood, current season’s cane and root growth, as well as in fruit development over the remainder of the season. If the supply of carbohydrate was altered or the balance changed during this period, fruit quality, as well as flower production and shoot growth in the following season, was affected. Hence, it is essential to balance vine growth, fruit development and reserve storage to achieve consistent yields of high-quality kiwifruit.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the IX international symposium on kiwifruit |
| Editors | M.D. Antunes, P.P. Gallego |
| Place of Publication | Belgium |
| Publisher | International Society for Horticultural Science |
| Pages | 163-169 |
| Number of pages | 7 |
| ISBN (Electronic) | 9789462612150 |
| DOIs | |
| Publication status | Published - 31 Oct 2018 |
| Event | Ninth International Symposium on Kiwifruit (KIWI-2017) - Ipanema Park Hotel, Porto, Portugal Duration: 06 Sept 2017 → 09 Sept 2017 https://web.archive.org/web/20170808135333/http://www.aphorticultura.pt/ixisk.html (Conference website) |
Publication series
| Name | Acta Horticulturae |
|---|---|
| Volume | 1218 |
| ISSN (Print) | 0567-7572 |
| ISSN (Electronic) | 2406-6168 |
Conference
| Conference | Ninth International Symposium on Kiwifruit (KIWI-2017) |
|---|---|
| Country/Territory | Portugal |
| City | Porto |
| Period | 06/09/17 → 09/09/17 |
| Other | This symposium is a common organization of Portugal and Spain where kiwifruit production has shown a great increase in the last decades and still represent a high growing potential. Kiwifruit is an important grown crop all over the world. The kiwifruit of international trade are selections of Actinidia deliciosa, A. chinensis and more recently A. arguta. The great increase of new cultivars represents a challenge for scientists and producers, in the way to search for the best which fit the different types of producers and markets over the world. The symposium will evolve all the aspects of the kiwifruit industry, from breeding to consumption. This symposium will be held at the same time as the International Kiwifruit Organization (IKO - 2017) 36ht annual conference, which will take place in the same location on 10-12th September 2017. This fact will facilitate the join of scientists, producers and traders from all over the world to exchange knowledge and discuss the main issues about kiwifruit industry. |
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