Vine Growth and Fruit Quality of 'Kyoho' Grapes as Affected by Mepiquat Chloride and Ga

Lim, Sang-Hyun; Kim, S.K.; Kim, Y.H.; Youn, Cheol Ku; Yoon, Tae-Myung

doi:10.17660/actahortic.2004.653.19

Cited by 8 publications

(6 citation statements)

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“…In general, reduction in shoot growth, which occurred as a result of root pruning and application of growth retardants, was in agreement with previous reports (Szyjewicz & Kliewer, 1983, Ferree et al, 1999, Albuquerque et al, 2000, Lim et al, 2004, Asín et al, 2007and Travers, 2013. The reduced rates of shoot elongation resulting from root pruning might be explained by short -term water stress (Giesler &1984, Schupp &Ferree, 1990), so that the presumably delivery of solutes normally carried in the xylem sap to developing tissues was reduced (McArtney and Ferree, 1999).…”

Section: Resultssupporting

confidence: 92%

“…The increase in yield was due to previous increase in cluster number and due to the positive effect of MC in weight of cluster. Clusters on vines treated with MC produced an increased berry set which resulted in a yield increase (Cahoon et al, 1991) also reported by (Lim, et al, 2004) on "Kyoho" grapes. In particular, MC applied at 5, 7, 10 leaves, respectively increased berry setting rate by 3 to 11% (Kim et al, 2008).…”

Section: Resultsmentioning

confidence: 69%

“…Berry weight and soluble solids decreased as yield increased (Cahoon et al, 1991). Further, MC plus gibberellines was very effective for berry set and berry size increase, thus fruit quality (Lim et al, 2004).…”

Section: Resultsmentioning

confidence: 89%

“…Clusters on vines treated with MC produced an increased berry set, which resulted in a yield increase (Cahoon et al, 1991). In addition, on 'Kyoho' grapes, MC alone and in combination with GA inhibited shoot growth, increased leaf area, chlorophyll content, increased cluster weight, berry enlargement and enhanced the fruit maturity by one week (Lim et al, 2004).…”

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confidence: 96%

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Enhancing the Bearing Capacity and Quality of Superior Grapes Via Root Pruning, Ethephon and Mepiquat Chloride

2015

NIDOC-ASRT

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UPERIOR IS one of the grapevine cultivars already cultivated in the Egypt vineyards to export and/or local market, which is spreading in new areas. The present study investigates additional treatments that may improve productivity and fruit quality of Superior grapevine. In this respect, the vines were subjected to: root pruning (RP), foliar application with either ethephon (ET) or mepequat chloride (M C). The vines were root-pruned along both sides of vine to a depth of 50 cm and 30, 45 or 60 cm from the trunk. Whereas ET and M C were sprayed at the concentration of 100, 200 or 300 ppm and at 100, 150 or 200 ppm, respectively. All treatments were carried out at two weeks before bloom.The obtained results clearly showed that RP at 30 or 45 cm as well as all M C and ET treatments reduced shoot length, which in turn increased the intensity of light reaching the center of the vine. RP at 30 cm was significantly the highest in this respect followed by M C at 150 and 200 ppm. As a general trend all mepiquat treatments induced increment in the total carbohydrates stored in shoot tissues of treated vines compared with untreated ones. In addition, plant content of N, P and K showed different fluctuations. However, M C treatment seemed to enhance shoot content of N and K. In general, these effects were associated with an enhanced in vine productivity during following treatments season. RP mainly at 30 cm as well as M C application at 150 and 200 ppm resulted in significantly increased fruitfulness, whereas both ET applications (200 and 300 ppm) significantly decreased it. However, all M C treatments produced the heaviest bunch. Therefore M C gave the highest yield / vine while the lowest yield was recorded for ET followed by control treatment.In conclusion, treating Superior vines with MC at medium (150 ppm) or high (200 ppm) concentrations could be recommended to an increase light density inside vine canopy as well increasing fruitfulness, number of cluster / vine, average berry or brunch weight and in turn vine yield.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 89%

mentioning

confidence: 96%

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Enhancing the Bearing Capacity and Quality of Superior Grapes Via Root Pruning, Ethephon and Mepiquat Chloride

2015

NIDOC-ASRT

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“…Additionally, berry production will severely suffer from more intense competition for assimilates from shoot growth. Mepiquat chloride is in use for vegetative growth control, for instance, in Spain, Japan and South Korea (Lim et al, 2004); chlormequat chloride is used in India. An overview on the mentioned compounds and their uses is given in Table 12.8.…”

Section: Grapevinesmentioning

confidence: 99%

Chemical Regulators of Gibberellin Status and Their Application in Plant Production

Rademacher¹

2017

Annual Plant Reviews Online

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Gibberellins and inhibitors of their biosynthesis are widely used in modern agriculture, horticulture and viticulture. Their global market is in the range of US$ 500 million. The gibberellins GA 3 , GA 4 and GA 7 are primarily used to increase fruit yield and/or quality in fruit trees and table and wine grapes. Distinct steps of the gibberellin biosynthetic pathway can be inhibited by growth retardants: chlormequat and mepiquat chloride, ancymidol, flurprimidol, paclobutrazol, uniconazole, and the fungicides tebuconazole and metconazole and daminozide, trinexapac-ethyl and prohexadione-calcium are currently used in crop production. Growth retardants reduce shoot elongation, thereby lowering the risk of lodging in cereals, rice and oilseed rape, and making ornamentals more compact. A better canopy structure with improved formation of reproductive structures is induced in cotton and peanuts. In fruit and nut trees, less pruning is required and increases in crop yield and quality are obtained.

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Chemical regulators of gibberellin status and their application in plant production

Rademacher¹

2016

Annual Plant Reviews, Volume 49

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Vine Growth and Fruit Quality of 'Kyoho' Grapes as Affected by Mepiquat Chloride and Ga

Cited by 8 publications

References 0 publications

Enhancing the Bearing Capacity and Quality of Superior Grapes Via Root Pruning, Ethephon and Mepiquat Chloride

Enhancing the Bearing Capacity and Quality of Superior Grapes Via Root Pruning, Ethephon and Mepiquat Chloride

Chemical Regulators of Gibberellin Status and Their Application in Plant Production

Chemical regulators of gibberellin status and their application in plant production

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