Kiwifruit reserves: Balancing vine growth and fruit productivity

A. C. Richardson, H. L. Boldingh, M. P. Kashuba, S. Nardozza, D. H. Greer

Research output: Book chapter/Published conference paperConference paperpeer-review

2 Citations (Scopus)


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 languageEnglish
Title of host publication9th International Symposium on Kiwifruit
EditorsM.D. Antunes, P.P. Gallego
PublisherInternational Society for Horticultural Science
Number of pages7
ISBN (Electronic)9789462612150
Publication statusPublished - 31 Oct 2018
EventIX International Symposium on Kiwifruit - Ipanema Park Hotel, Porto, Portugal
Duration: 06 Sep 201709 Sep 2017

Publication series

NameActa Horticulturae
ISSN (Print)0567-7572
ISSN (Electronic)2406-6168


ConferenceIX International Symposium on Kiwifruit
OtherThis 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.
Internet address


Dive into the research topics of 'Kiwifruit reserves: Balancing vine growth and fruit productivity'. Together they form a unique fingerprint.

Cite this