Ascorbic acid promotes graft-take in sweet pepper plants (Capsicum annuum L.)

Johkan, Masahumi; Oda, Masayuki; Mori, Genjiro

doi:10.1016/j.scienta.2008.02.004

Cited by 16 publications

(10 citation statements)

References 18 publications

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“…Our results suggest that the scions and rootstocks cultivated for 11 and 12 DAS in a closed transplant production system were past the optimal growth stage for grafting, and that the initiation and development of vascular bundles occurs slowly. Previous studies have also reported a decrease in survival rate and growth after grafting in older plants (Greenwood, 1984;Johkan et al, 2008, 2009). Chang et al (2000 reported that the relative growth rates of watermelon transplants at the early days after grafting increased with decreasing seedling ages of scions and rootstocks.…”

Section: Early Growth Of Cucumber Transplants Grown In a Greenhouse Amentioning

confidence: 84%

Growth and Development of Grafted Cucumber Transplants as Affected by Seedling Ages of Scions and Rootstocks and Light Intensity during Their Cultivation in a Closed Production System

Kwack¹,

Park²,

Chun³

2014

HST

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The objective of this study was to determine the effects of seedling ages of scions and rootstocks for grafting and light intensity during their cultivation in a closed transplant production system on the growth and development of grafted cucumber transplants. Cucumber scions and rootstocks were cultivated under 5 photosynthetic photon flux (PPF) levels: 100, 140, 180, 230, and 280 µmol･m -2 ･s -1 in a closed transplant production system. The scions were grafted onto the rootstocks at 8, 9, 10, 11, and 12 days after sowing (DAS). Hypocotyl length of scions and rootstocks decreased significantly as PPF increased, and an increase in dry weight with increasing PPF was more pronounced in scions. After grafting, cucumber transplants were grown in a greenhouse until 22 DAS and were then transplanted for investigation of their growth and development. Plant height, leaf area, and fresh weight of cucumber transplants grafted at 8, 9, and 10 DAS were greater, but light intensity during cultivation of scions and rootstocks did not significantly affect the early growth of cucumber transplants after grafting. The number of female flowers in grafted cucumber after transplanting was highest when scions and rootstocks were cultivated under PPF 140 and 180 µmol･m -2 ･s -1 and were grafted at 8 DAS. These results indicate that controlling environmental conditions in a closed transplant production system during the production of scions and rootstocks can advance grafting time and promote the growth and development of grafted cucumber transplants.

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Section: Early Growth Of Cucumber Transplants Grown In a Greenhouse Amentioning

confidence: 84%

Growth and Development of Grafted Cucumber Transplants as Affected by Seedling Ages of Scions and Rootstocks and Light Intensity during Their Cultivation in a Closed Production System

Kwack¹,

Park²,

Chun³

2014

HST

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“…However, photosynthesis is required for cell division, which is needed for vascular regeneration and callus formation (Hunter et al, 2004;Taiz and Zeiger, 2002). Callus proliferation in both the rootstock and the scion are needed for vascular connection at the rootstock-scion interface (Ogata et al, 2005), and poor callus formation can lead to low rates of survival of grafted plants (Johkan et al, 2008(Johkan et al, , 2009Oda et al, 2005). Carbohydrates are required for callus formation, and are produced in the plant through photosynthesis (Hunter et al, 2004;Milthorpe and Moorby, 1979;Taiz and Zeiger, 2002).…”

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confidence: 99%

Effect of Environment on Survival of Eggplant, Pepper, and Tomato in a Small-scale Healing Chamber

Buajaila

Devi

Miles

2018

hortte

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Many small-scale vegetable growers in the United States who graft their own vegetable transplants use healing chambers inside a greenhouse to heal their grafted plants. Under these conditions, light and relative humidity (RH) can fluctuate during the healing process, and growers need more research-based information regarding the impact of these factors on the survival of grafted transplants. To address this need, this study investigated the effect of different targeted levels of light (0%, 25%, and 50%) and RH (50% and 100%) (six combinations) in a small-scale healing chamber within a greenhouse, where the healing chamber was opened for increasing periods of time for 8 days, at which time plants were fully exposed to greenhouse conditions. The survival and growth of self-grafted eggplant (Solanum melongena), pepper (Capsicum annuum), and tomato (Solanum lycopersicum) were measured up to 25 days post grafting. Percent light in the closed healing chambers was similar for the 50% and 100% RH levels of each light treatment. When the healing chambers were closed, compared with the greenhouse, there was 0.1% light in the 0% light treatments, 25% light on average in the 25% light treatments, and 43% light on average in the 50% light treatments. On days 2 to 5 after grafting, when chambers were opened up to 1 hour, average RH in the healing chambers was 96% to 98% for the 100% RH treatments, and was 42% to 49% for the 50% RH treatments. On days 6 and 7, when chambers were opened for 3 to 8 hours, RH was 79% to 82% for the 100% RH treatments, and was 39% to 46% for the 50% RH treatments. Survival of grafted plants following healing was greatest when the healing chamber treatment was 100% RH and 50% or 25% light (95% and 90% survival, respectively), and plant survival with these two treatments did not significantly decline from 11 to 21 days after grafting, indicating plants were fully healed and acclimated when they were removed from the healing chambers on day 8. At 22 to 25 days following grafting, plants healed with 100% RH and 50% or 25% light had greater plant height, number of leaves per plant, and stem diameter than plants healed in the other light and RH combinations. SPAD reading and nitrate-nitrogen of fresh petiole sap were unaffected by any of the healing treatments tested in this experiment, or by crop type. Tomato and pepper had 14% greater survival rates on average than eggplant at all measurement dates, while tomato tended to have greater plant growth, followed by eggplant and pepper. Additional research is needed to improve survival of grafted eggplant.

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“…Application of an antitranspirant promoted shoot growth and graft success in sweet pepper [Capsicum annuum (Nitzsche et al, 1991)]. Johkan et al (2008) reported that stomatal closure increased in sweet pepper plants receiving an ascorbic acid treatment, and survival of grafted sweet pepper plants was improved because of increased water potential in plants. Foliar application of ascorbic acid 1 d after grafting increased stomatal resistance and water potential of older (58 d old) grafted sweet pepper plants to a level similar to that found in untreated younger (34 d old) plants (Johkan et al, 2009).…”

mentioning

confidence: 99%

Antitranspirant Application Increases Grafting Success of Watermelon

Dabirian¹,

Miles²

2017

hortte

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The one-cotyledon splice grafting method is commonly used for watermelon (Citrullus lanatus) because it is relatively rapid and there is less rootstock regrowth than with other grafting methods. However, plants must rely on moisture in the air for survival during at least the first 4 days after grafting. In 2015 and 2016, greenhouse experiments were conducted to investigate if application of commercial stomata-coating and stomata-closing antitranspirant products, applied 1 day before grafting to both scion and rootstock seedlings, could increase the survival of watermelon transplants grafted using the one-cotyledon method. ‘TriX Palomar’ watermelon was grafted onto rootstock ‘Tetsukabuto’ (Cucurbita maxima × C. moschata) in Expt. 1, and onto rootstock ‘Emphasis’ (Lagenaria siceraria) in Expt. 2. The survival of grafted watermelon differed because of experiment (P = 0.0003), antitranspirant treatment (P < 0.0001), and experimental repeat (P < 0.0001). The survival of ‘TriX Palomar’ grafted onto ‘Tetsukabuto’ was greatest for plants treated with the stomata-coating + stomata-closing antitranspirants (92% to 100%), followed by the stomata-closing antitranspirant (79% to 97%), water (72%), and the stomata-coating antitranspirant (50% to 60%). For ‘TriX Palomar’ grafted onto ‘Emphasis’, plants treated with the stomata-closing antitranspirant had the greatest survival (87% to 97%), followed by stomata-coating + stomata-closing antitranspirants (84% to 94%), the stomata-coating antitranspirant (50% to 67%), and water (53% to 68%). In Expt. 3, stomatal conductance (gS) was similar for both ‘TriX Palomar’ and ‘Emphasis’ seedlings before treatment application, but differed because of the treatments 1 and 2 days after application. Stomatal conductance did not change for ‘TriX Palomar’ seedlings after application of the stomata-coating antitranspirant or water, or for ‘Emphasis’ seedlings after application of the stomata-coating antitranspirant. Stomatal conductance of ‘TriX Palomar’ seedlings decreased 57% to 62% after application of the stomata-closing antitranspirant and decreased 48% to 60% after application of the stomata-coating + stomata-closing antitranspirants. Stomatal conductance for ‘Emphasis’ seedlings increased 37% after water application, and decreased 58% to 68% after application of the stomata-closing antitranspirant, and decreased 42% to 45% after application of the stomata-coating + stomata-closing antitranspirants. The survival rate of grafted ‘TriX Palomar’ transplants was increased nearly 30% by application 1 day before grafting of the commercial stomata-closing antitranspirant or stomata-coating + stomata-closing antitranspirants in this study. Increase in grafting success is likely due to a reduction in transpiration that occurs when the stomata-closing antitranspirant is applied to the seedlings before grafting.

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Ascorbic acid promotes graft-take in sweet pepper plants (Capsicum annuum L.)

Cited by 16 publications

References 18 publications

Growth and Development of Grafted Cucumber Transplants as Affected by Seedling Ages of Scions and Rootstocks and Light Intensity during Their Cultivation in a Closed Production System

Growth and Development of Grafted Cucumber Transplants as Affected by Seedling Ages of Scions and Rootstocks and Light Intensity during Their Cultivation in a Closed Production System

Effect of Environment on Survival of Eggplant, Pepper, and Tomato in a Small-scale Healing Chamber

Antitranspirant Application Increases Grafting Success of Watermelon

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