Varietal Differences in Tomato Intumescence under Changing Water Conditions

Miyama, Yoko; Yasui, Nanako

doi:10.2525/ecb.59.157

Cited by 5 publications

(3 citation statements)

References 18 publications

(15 reference statements)

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“…1). Similar to our results, Miyama and Yasui (2021) reported leaf abscission in several tomato cultivars grown under 90% RH, which ultimately affected leaf area of seedlings.…”

Section: Resultssupporting

confidence: 91%

Effect of Radiation Quality and Relative Humidity on Intumescence Injury and Growth of Tomato Seedlings

Retana-Cordero

Humphrey

Gómez

2022

horts

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Intumescence is a physiological disorder that affects some tomato (Solanum lycopersicum) cultivars grown in environments lacking ultraviolet radiation. Both far-red (FR) radiation and blue light have been shown to help mitigate this disorder. Thus, the objectives of this study were to characterize and compare intumescence injury and growth of various tomato cultivars propagated under different radiation qualities (Expt. 1) and to evaluate plant responses to the interactive effect of radiation quality and relative humidity (RH) (Expt. 2). Seedlings of six cultivars in Expt. 1 were grown under broad band white light (W), W and blue with (WBFR) or without (WB) FR radiation, and blue and red light with FR radiation (BRFR). Seedlings of four cultivars in Expt. 2 were grown under W or WBFR and a low (≈50%) or high (≈95%) RH. In both experiments, seedlings were grown under a daily light integral of ≈13 mol·m‒2·d‒1 (200 ± 4 μmol·m‒2·s‒1 for 18 h·d−1). FR radiation was provided using 20 ± 2 μmol·m−2·s−1 delivered throughout the entire photoperiod or at the end-of-day (EOD) in Expts. 1 or 2, respectively. Intumescence was generally suppressed when seedlings in Expt. 1 were grown under BRFR and WBFR, which also corresponded with the general response to stomatal conductance (gs). In contrast, seedlings grown under W had the highest incidence of intumescence, ranging from 23% to 69% across cultivars. The high blue photon flux (PF) ratio in WB was not effective at suppressing intumescence injury without FR radiation, although incidence and severity were lower compared with W. In Expt. 2, intumescence incidence was generally lower in seedlings grown under WBFR, and RH had small effects on intumescence. In both experiments, younger leaves were relatively less affected by intumescence, suggesting that a developmental factor is associated with the disorder. As expected, providing FR radiation resulted in a general increase in stem height across cultivars and in both experiments. The high RH provided in Expt. 2 also resulted in an increase in stem height. However, seedlings under low RH produced larger leaves, lower specific leaf area, and more shoot dry mass than those under high RH. Overall, our findings show that applying FR radiation helps suppress intumescence, but strategies are needed to minimize issues with excessive stem elongation.

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“…1). Similar to our results, Miyama and Yasui (2021) reported leaf abscission in several tomato cultivars grown under 90% RH, which ultimately affected leaf area of seedlings.…”

Section: Resultssupporting

confidence: 91%

Effect of Radiation Quality and Relative Humidity on Intumescence Injury and Growth of Tomato Seedlings

Retana-Cordero

Humphrey

Gómez

2022

horts

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“…Prinzenberg et al (2022) also suggested that the differences among intumescence injury severity in tomato are genetically dependent, with medium to high heritability. Miyama and Yasui (2021) conducted experiments to examine intumescence injury in several tomato cultivars, and the results showed that intumescence injury occurred in tomato cultivars with higher shoot/root ratios. Although only the effect of Ca was investigated in this study, other factors may be involved, and effects of other nutrients or the osmotic pressure of the nutrient solution on cultivar differences will be investigated in the future.…”

Section: Discussionmentioning

confidence: 99%

Incidence of Intumescence Injury in Several Tomato Cultivars Under Different Calcium Conditions

Sita,

Kousaka,

Tamoi

et al. 2023

Hort. J.

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Intumescence injury is a physiological disorder characterized by abnormal outgrowth of epidermal and parenchymal cells on the adaxial and/or abaxial surfaces of leaves. The purpose of this study was to examine cultivar differences in the incidence of intumescence injury, the relation between different calcium (Ca) conditions and intumescence injury, and to investigate countermeasures against intumescence injury in tomatoes. We grew tomato plants under different Ca nutrient conditions and treated them under high relative humidity and low ultra-violet light conditions to investigate intumescence injury incidence. The degree of intumescence injury varied among different tomato cultivars under a normal Ca condition with 4.5 me•L −1 of Ca. Intumescence occurred in cultivars that showed no injury incidence under the normal Ca condition when they were grown with a low Ca nutrient solution containing 0.5 or 2.5 me•L −1 of Ca. Intumescence injury incidence decreased in cultivars that showed high incidence under the normal Ca condition when they were grown with a high Ca nutrient solution containing 9.5 or 24.5 me•L −1 of Ca. The differences in the incidence of intumescence among cultivars was marked with different Ca nutrient solution concentrations. There was a negative correlation between the degree of intumescence injury and the Ca content in tomato shoots. Foliar spraying with Ca was found to reduce the incidence of intumescence injury. It was suggested that intumescence injury in tomatoes can be mitigated by using cultivars in which intumescence is less likely to occur, increasing the Ca concentration of shoots by providing more Ca nutrients to the plant, and spraying Ca solution directly on the leaves.

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“…To understand the effect of substrate water status on intumescence, Rud (2009) found that tomato plants grown in containers watered daily were more affected by intumescence than those that received longer intervals between irrigation events. In another study, Miyama and Yasui (2021) concluded that intumescence is more likely to affect plants exposed to dry-down cycles than those grown under continuous sub-irrigation. Results from both studies suggest that intumescence response is affected by substrate water status, which regulates water potential of plants and likely differs between hydroponic and container-grown plants (Bugbee and Salisbury 1989).…”

mentioning

confidence: 99%

Intumescence Response by Tomato Plants Grown in a Greenhouse or Indoors Using Two Types of Soilless Culture Systems

Suarez,

Agrawal,

Izzo

et al. 2023

horts

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The main objective of this study was to characterize intumescence injury of three susceptible tomato cultivars grown in a greenhouse or indoors using two types of soilless culture systems. Plants of cultivars Maxifort, Camaro, and Patio were grown in either an indoor environment with broadband white and red light-emitting diode (LED) fixtures providing a daily light integral (DLI) of 12.7 mol·m−2·day−1 [photosynthetic photon flux density (PPFD) of 220 ± 3 µmol·m−2·s−1 for 16 h·d−1] or in a glass-glazed greenhouse with supplemental lighting provided by high-pressure sodium lamps that delivered a PPFD of ∼150 µmol·m−2·s−1. Plants were grown using deep-water culture hydroponic systems or containers with a peat-based substrate. The growing environment had a larger effect on intumescence incidence and severity than the growing system, likely due to differences in ultraviolet radiation (100 to 400 nm), but other factors such as day/night temperature and relative humidity (RH), could have affected the response. Across cultivars, the probability of developing intumescence was higher indoors (≥91%) than in the greenhouse. Indoor-grown plants also developed symptoms of the disorder from 2 to 6 days earlier than those in the greenhouse. Similarly, intumescence incidence was higher in plants from all cultivars grown indoors than in the greenhouse, but differences between the two environments were generally greater for Patio and Camaro than for Maxifort, which was the most susceptible cultivar. Greenhouse conditions were more conducive to active plant growth. For example, plants in the greenhouse were more than 2 times taller and had at least 12 times greater leaf area than those indoors, which resulted in large differences in shoot dry mass. However, environmental effects on intumescence response also contributed to differences in growth, as plants that were most affected by the disorder experienced severe leaf abscission and/or senescence. Our overall findings show that intumescence is greatly affected by the production environment, but injuries are likely to change based on genetic susceptibility.

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Varietal Differences in Tomato Intumescence under Changing Water Conditions

Cited by 5 publications

References 18 publications

Effect of Radiation Quality and Relative Humidity on Intumescence Injury and Growth of Tomato Seedlings

Effect of Radiation Quality and Relative Humidity on Intumescence Injury and Growth of Tomato Seedlings

Incidence of Intumescence Injury in Several Tomato Cultivars Under Different Calcium Conditions

Intumescence Response by Tomato Plants Grown in a Greenhouse or Indoors Using Two Types of Soilless Culture Systems

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