Impact of Repeated Yearly Applications of Prohexadione-Calcium On Vegetative and Reproductive Growth of ‘Golden Delicious’/M.9 Apple Trees

Atay, Ayşe; Koyuncu, Fatma

doi:10.1515/johr-2017-0005

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…Application of Pro-Ca twice was the only treatment that significantly increased fruit weight compared with control trees. A positive Pro-Ca effect on fruit size was mentioned by Atay and Koyncu (2017).…”

Section: Fruit Colour and Size Distributionmentioning

confidence: 97%

“…That also correlated with the highest yield, though there were no significant differences among treatments. Flowering intensity was very similar between treatments with some positive impact of summer pruning and lower doses of Pro-Ca.Numerous studies proved these findings that various growth-control technologies have more significant impacts on tree vegetative growth but not on the yield (Costa et al 2001, Maas 2008, Meland and Kasier 2016, Atay and Koyncu 2017.…”

Section: Tree Productivity and External Fruit Qualitymentioning

confidence: 99%

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Effects of growth control on yield and fruit quality of the apple cultivar ‘Rubin’

Kviklys

Viškelis

Lanauskas

et al. 2020

AFSci

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The effect of tree growth-control technologies on apple tree vegetative development, productivity and fruit quality was investigated with apple cultivar ‘Rubin’ on dwarf rootstock P 60 at the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry in 2015–2018. Eight treatments were established combining tree trunk incision by chainsaw before flowering, application of prohexadione-calcium in different dose and time, summer pruning in August and root pruning before flowering. Root pruning from both sides of the tree significantly reduced tree trunk diameter, shoot length and pruning weights but at the same time reduced fruit weight. It increased tree productivity and enhanced fruit colouring. Two applications of prohexadione-calcium significantly reduced mean shoot length and increased average fruit weight. Summer pruning had a positive impact on fruit colouring. Trunk incisions enhanced leaf P, K and Fe content. Pro-Ca increased leaf Ca content. Trees root pruned from both sides had one of the lowest contents of all tested minerals. All tree growth-control technologies had a positive impact on tree productivity , fruit quality and bearing stability comparing with control treatment.

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Section: Fruit Colour and Size Distributionmentioning

confidence: 97%

Section: Tree Productivity and External Fruit Qualitymentioning

confidence: 99%

Effects of growth control on yield and fruit quality of the apple cultivar ‘Rubin’

Kviklys

Viškelis

Lanauskas

et al. 2020

AFSci

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“…The applications of 125 mg L -1 ProCa on the same trees for three years resulted in a 40-43% shoot length reducing. Internodes length decreased at about 30%, while the number of total nodes was unaffected 24 . Miller 25 proposed that in shoot growth control, ProCa applied as single spray or multiple low-rate sprays at petal fall (PF) or within 10 days after PF were better than at 2-3 weeks after PF, and the time of initial spray was more critical in achieving early shoot growth control than rate, but to achieve season-long shoot growth suppression, higher rate was needed.…”

Section: Introductionmentioning

confidence: 94%

Effect of Prohexadione-calcium on the Shoot Growth, Fruits, Endogenous Hormones and Expression of GA-related Genes in ‘Fuji’ Apple (Malus Domestica Borkh.)

Wang

Song

chen

et al. 2021

Preprint

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The shoot growth of ‘Fuji’ apple is vigorous, which causes a poor lighting condition and a high cost to prune. Prohexadione-calcium (ProCa) has been proven to regulate the shoots growth, fruits and return flowering in apple abroad but there are fewer studies on its effect on the shoot growth, fruits and return flowing in ‘Fuji’ apple in China. Moreover, the mechanism of its action is incompletely understood. So different treatments were applied as foliar sprays to dwarf self-rooted ‘Fubrax Red Fuji ’/M9-T337 trees at 3, 14, 35 and 56 DAPF (Days after petal fall). The results showed that at the end of the growing season, spraying ProCa effectively inhibited the growth of shoots compared to control and one spray of 500 and 750 mg L-1 ProCa, two sprays of 250 mg L-1 ProCa and four sprays of 250 mg L-1 ProCa showed the highest reduction. ProCa had very slight effect on yield, quality and return flowing. During the growing season, two applications of ProCa of 250 mg L-1 on 3 and 14 DAPF significantly reduced the content of GA 1+3 , IAA and ZR but increased the content of ABA in long terminal shoot leaves in at least one time point. The expression patterns of GA-regulated genes showed that ProCa down-regulated MdGA3ox transcript level at 10, 20, 30, 40 and 50 DAPF and down-regulated MdCPS, MdGA20ox, MdRGL1a, MdSLY1 transcripts in at least one time point. This study provided a valuable insight to regulate the vegetative growth of ‘Fuji’ apple and explored the mechanism of ProCa action.

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“…W hen applied as a soil drench in November, PP333 (4 g a.i per tree) decreased growth, internode length, leaf area, stomatal size, water potential, transpiration rate, endogenous GA content, stomatal conductance and increased leaf thickness, leaf chlorophyll content and photosynthesis of the olive cultivar Leccino under rain-fed conditions in Himachal Pradesh, India (Kumar and Sharma, 2016). The use of 125 mg/dm-3 prohexadione-calcium inhibited vegetative growth of Golden Delicious apple trees while having no influence on fruit quality or yield parameters (Atay and Koyuncu, 2017).…”

Section: Use Of Bioregulatorsmentioning

confidence: 99%

Dwarfism in Fruit Plants: A Review

Warang¹,

Gawas²

2023

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In this modern era, farmers are adopting high density planting (HDP) for most of the fruit crops. Dwarfing is based on the principle of making the optimal use of vertical and horizontal space per unit time and harnessing the highest potential returns per unit of inputs and natural resources. Dwarfing in fruit crops can be accomplished through a variety of methods, including the use of dwarfing rootstock, the selection of spur type scion cultivars, use of interstock, pruning, root pruning, various training systems, girdling, scoring, bark invasion and the application of growth retardants. One strategy for promoting early fruiting, less vigour and increasing production is to utilize dwarf root stocks. The mechanism underlying dwarfing involves anatomical, physiological and biochemical changes. It has been proposed that dwarfing rootstock or interstock control tree size by regulating the auxin that passes through the rootstock or interstock’s bark. Paclobutrazol retards growth, shoot elongation and reduced internodal length by inhibiting gibberellins synthesis. Dwarfness can be imparted by the using incompatible rootstock. Dwarfing can be induced by inducing viral infection, although, it is not commercially adopted. Recombinant DNA technology has recently expanded the gene pool that can be managed to cause dwarfism and maximize benefits in horticulture crops.

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Impact of Repeated Yearly Applications of Prohexadione-Calcium On Vegetative and Reproductive Growth of ‘Golden Delicious’/M.9 Apple Trees

Cited by 7 publications

References 21 publications

Effects of growth control on yield and fruit quality of the apple cultivar ‘Rubin’

Effects of growth control on yield and fruit quality of the apple cultivar ‘Rubin’

Effect of Prohexadione-calcium on the Shoot Growth, Fruits, Endogenous Hormones and Expression of GA-related Genes in ‘Fuji’ Apple (Malus Domestica Borkh.)

Dwarfism in Fruit Plants: A Review

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