Effects of Aminoethoxyvinylglycine and High Temperatures on Fruit Set and Fruit Characteristics of Heat-cultured Satsuma Mandarin.

Ogata, Takanari; Hirota, Tomoko; Shiozaki, Shuji; Horiuchi, Shosaku; Kawase, Kenji; Ohashi, Masato

doi:10.2503/jjshs.71.348

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…Actually, it is well known that exogenous ethylene or promoters induce fruit abscission in various fruit trees (Byers et al 1990a;Untiedt and Blanke 2001). Furthermore, reductions in the abscission rates during citrus fruit set have been obtained using ethylene biosynthesis inhibitors like 2-aminoethoxyvinyl glycine (AVG; see Ogata et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Carbohydrate and ethylene levels related to fruitlet drop through abscission zone A in citrus

Iglesias

Tadeo

Primo‐Millo

et al. 2006

Trees

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Citrus fruits have two abscission zones (AZ), named A (in the pedicel) and C (in the calyx). Early fruitlet abscission takes place exclusively through AZ A, while at June drop it is progressively inactivated and AZ C begins to operate. In previous work, it has been demonstrated that carbohydrate and ethylene regulate fruit drop through abscission zone C. In this paper, we have analysed the effect of these two factors in developing fruitlets of Satsuma mandarins (Citrus unshiu [Mak.] Marc.) cv. Okitsu to elucidate their involvement on abscission through AZ A. The data indicated that ACC content and ethylene production of fruitlets paralleled abscission rates. Sucrose supplementation increased fruit set, although did not counteract the abscising effect induced by ACC. Branch girdling of terminal fruitlets carrying several leaves significatively reduced ethylene production and abscission rates, and increased sugar content. Pedicel girdling showed the opposite. Taken together, the results revealed that the carbohydrate content may be a biochemical signal involved in the mechanisms controlling abscission through AZ A. The evidence also showed parallelisms between ethylene and its activation. As the induction of higher ethylene levels after the period of AZ A activity, however, was not able to promote fruit drop, it is also concluded that solely ethylene is not sufficient to activate abscission.

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Section: Discussionmentioning

confidence: 99%

Carbohydrate and ethylene levels related to fruitlet drop through abscission zone A in citrus

Iglesias

Tadeo

Primo‐Millo

et al. 2006

Trees

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“…Venburg et al (2008) and Racsko (2012) reported that with AVG applications, ethylene production in the flower was prevented, as a result, the senescense process in the stigma and ovule was prolonged and the fruit set increased. Ogata et al (2002) reported that 200 ppm AVG applied to mandarin at the beginning of bloom was effective in increasing fruit set. As evidenced in previous studies, extending flower life by external application of aminoethoxyvinylglycine, a plant growth regulator that inhibits ethylene biosynthesis, can be a powerful tool to improve the pollination yield and fruit set of fruits in adverse weather conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Ogata et al . (2002) reported that 200 ppm AVG applied to mandarin at the beginning of bloom was effective in increasing fruit set. As evidenced in previous studies, extending flower life by external application of aminoethoxyvinylglycine, a plant growth regulator that inhibits ethylene biosynthesis, can be a powerful tool to improve the pollination yield and fruit set of fruits in adverse weather conditions.…”

Section: Discussionmentioning

confidence: 99%

Effect of aminoethoxyvinylglycine (AVG) on quality, berry set and coloration of ‘Alphonse Lavallée’ table grapes

Babalik

2021

J. Agric. Sci.

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The effect of different concentrations of aminoethoxyvinylglycine (AVG; 0 (control), 250, 500, 750 and 1000 mg/l), an ethylene biosynthesis inhibitor, on grape berry set and fruit quality was evaluated under vineyard conditions. Treatments were performed on ‘Alphonse Lavallée’ grape cultivar at full bloom stage for two years. Cluster and berry growth (length, width and weight), firmness, soluble solids content, yield, berry set, anthocyanin content and colour parameters were determined on treated and untreated (control) fruits. As a result of the study, the effects of AVG concentrations on firmness were not significant. When AVG applications were compared with control, it is determined that some quality properties were statistically affected, the others were not. Fruit set was increased by lower concentrations of AVG (250 mg/l) and anthocyanin content was increased by higher concentrations of AVG (750 mg/l).

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“…Moreover, ethylene is thought to be the last hormonal effector of abscission induced by different stress conditions (Tudela and Primo-Millo, 1992). There is a close relationship between ethylene and abscission (Brown, 1997), and ethylene biosynthesis inhibitors, such as aminoethoxyvinylglycine (AVG), block the effects of ethylene and reduce fruit fall in several species (Ogata et al, 2002;Suzuki et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Effects of Photosynthate Transport and Water Flow to Young Fruit on Fruit Drop via Ethylene Synthesis in Persimmon (Diospyros kaki Thunb.)

Sun

Adachi

Kadowaki

et al. 2010

J. Japan. Soc. Hort. Sci.

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In this study, we aimed to characterize which factors control ethylene production and fruit drop in persimmon (Diospyros kaki Thunb.). We determined the effects of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU; a specific photosynthesis inhibitor) and defoliation treatments on the photosynthetic rate, transpiration rate, sap flow, fruit drop, and ethylene evolution. DCMU treatment, which prevented photosynthate transport but allowed water flow, promoted fruit drop by 67% 10 days after treatment. Defoliation treatment, which prevented both photosynthate and water transport, significantly hastened fruit drop. On average, fruit drop occurred 2 days earlier with defoliation treatment than DCMU treatment. Compared with the control, treated fruit attached to the tree showed an increasing trend in ethylene production, although at a low level (≦ 0.8 nL·g −1 ·h −1 in the flesh; ≦ 20 nL·g −1 ·h −1 in the calyx). Fruit abscission is thought to be induced by a following ethylene burst, because fruit showing an abscission trend showed high rates of ethylene production (almost 200 nL·g −1 ·h −1 ). Thus, blocking photosynthate transport and water flow induced initial and autocatalytic increases in the production of ethylene, which plays a crucial role in triggering fruit drop. Overall, our results suggest that the transport of photosynthates, or both photosynthates and water, to fruit inhibits fruit drop by preventing the induction of ethylene synthesis in young persimmon fruit.

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Effects of Aminoethoxyvinylglycine and High Temperatures on Fruit Set and Fruit Characteristics of Heat-cultured Satsuma Mandarin.

Cited by 9 publications

References 9 publications

Carbohydrate and ethylene levels related to fruitlet drop through abscission zone A in citrus

Carbohydrate and ethylene levels related to fruitlet drop through abscission zone A in citrus

Effect of aminoethoxyvinylglycine (AVG) on quality, berry set and coloration of ‘Alphonse Lavallée’ table grapes

Effects of Photosynthate Transport and Water Flow to Young Fruit on Fruit Drop via Ethylene Synthesis in Persimmon (Diospyros kaki Thunb.)

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