Competition between fruit and vegetative growth in Hayward kiwifruit

Minchin, P. E. H.; Snelgar, W. P.; Blattmann, P.; Hall, A. J.

doi:10.1080/01140671003781728

Cited by 31 publications

(27 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By harvest fruit were 28% smaller than fruit grown without regrowth competition (Table 2, P B0.001). This reduction is fruit size is identical to that reported by Minchin et al (2010). Regrowths as a net carbohydrate source In the treatments described above, we maintained the regrowth as a net sink by removing leaves before they were fully expanded.…”

Section: Resultssupporting

confidence: 80%

“…All experimental work was carried out on single shoots that were pruned to length so that they contained four leaves and a single fruit, as described by Minchin et al (2010). Pruning was applied to stimulate growth of a single vegetative shoot from the most distal bud on each shoot so that we could measure how this vegetative competition affected fruit growth.…”

Section: Experimental Sites and Treatmentsmentioning

confidence: 99%

“…This allowed us to measure potential fruit size when carbohydrate supply was adequate, although possibly not saturated (Minchin et al 2010). 2.…”

Section: Experimental Sites and Treatmentsmentioning

confidence: 99%

“…All measurements were in mm and fruit weight was estimated as 0.658)D1)D2)L/1000 (Minchin et al 2010). Vegetative growth was monitored at 9-to 15-day intervals by measuring the length of each regrowth.…”

Section: Monitoringmentioning

confidence: 99%

“…their ability to compete when carbohydrate supply is limited (Lacointe & Minchin 2008). Minchin et al (2010) studied the role of carbohydrate availability and sink competition in kiwifruit vines using a model system based on phloem-girdled shoots. They found that four leaves supporting only one fruit were sufficient to produce large fruit with high dry weight (DW).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Sink priority on ‘Hayward’ kiwifruit vines

Snelgar

Minchin

Blatmann

et al. 2012

New Zealand Journal of Crop and Horticultural Science

Self Cite

View full text Add to dashboard Cite

An experimental system based on girdled shoots was used to assess how vegetative competition alters the growth of 'Hayward' kiwifruit. Each shoot was pruned to length so that it contained four source leaves and a sink consisting of either a single fruit, a vegetative regrowth, or one fruit and a vegetative regrowth. Vegetative competition had the greatest effect on fruit growth when it occurred about five weeks after flowering, when fruit growth is maximal. When a single fruit was in competition with a defoliated vegetative shoot, fruit size at harvest was reduced by 50%, whereas competition 20 days later reduced the fruit size by only 28%. Our results show that vegetative growth has a higher sink priority than fruit for both fresh weight and dry weight (DW) for the first 120 days after flowering, the time when most fruit growth occurs. Furthermore, during this period vegetative growth had a higher sink strength for DW than fruit. As a consequence of sink priority, when there is competition for limited resources, shoot growth continues at the expense of fruit growth.

show abstract

Section: Resultssupporting

confidence: 80%

Section: Experimental Sites and Treatmentsmentioning

confidence: 99%

“…This allowed us to measure potential fruit size when carbohydrate supply was adequate, although possibly not saturated (Minchin et al 2010). 2.…”

Section: Experimental Sites and Treatmentsmentioning

confidence: 99%

Section: Monitoringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%