Effect of light on the germination of vegetable seeds

Nakamura, S.; Okasako, Y.; Yamada, Eiiti

doi:10.2503/jjshs.24.17

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Seeds of many Cucurbitaceae species have negative photoblastic behavior, whereas their germination is better in the dark than in light, as reported in C. lanatus, ucurbita maxima, L. siceraria, Benincasa hispida and Momordica harantia [53], C. lanatus var. citroides [66] and C. colocynthis [4,67].…”

Section: Discussionmentioning

confidence: 73%

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Effect of storage conditions and sodium hypochlorite treatment on germination of Cucumis prophetarum (Cucurbitaceae) seeds from arid Arabian deserts

Shabana

Mahmoud

Gairola

et al. 2021

Preprint

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Background This is the first study on seed germination of Cucumis prophetarum in the Arabian Peninsula. Light and temperature as the main environmental factors and seed storage conditions greatly affect the germination of many Cucurbitaceae species. C. prophetarum is the perennial prostrate with woody rootstocks that grow throughout the year in the arid Arabian deserts. We examined the effects of seed storage conditions and sterilization by sodium hypochlorite (NaOCL) on germination of C. prophetarum seeds. Matured, fresh and field stored seeds were collected in March of 2016 and 2017 from a population in the United Arab Emirates. Fresh and the stored seeds (field, freeze, and room temperature) were germinated at three temperature regimes (15/25, 20/30 and 25/35°C) in both continuous darkness and alternating 12 h light/12 h darkness. Results The fresh and freeze stored seeds had higher germination percentage than the field and room temperature stored seeds. High germination was recorded in both lower and moderate temperatures (15/25 and 20/30°C) in light conditions. Sterilization of the seeds by NaOCl had a negative effect on the speed and germination percentage under all storage conditions, and it changes light and temperature requirements of seeds for germination. Conclusions Germination of C. prophetarum is sensitive to incubation light and temperature as well as to the seed storage conditions. The germination ability of stored seeds indicates that seed storage behaviour of C. prophetarum is orthodox. Light and temperature requirements for seed germination reflects a suitable place, habitat, and time for seedling emergence of C. prophetarum. The effect of NaOCl treatment on the germination may be associated with concentration and exposure periods of seeds. Therefore, we suggest that when using NaOCl for seed sterilization or to stimulate the germination, caution must be taken for using its concentration and exposure time, especially for species with thin and soft seed coats like C. prophetarum. Further studies on seed germination ecology would help to understand better the adaptive strategy of the C. prophetarum in the arid desert environments.

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Section: Discussionmentioning

confidence: 73%

“…Matsum. & Nakai [53]. Seed germination of several species is sensitive to the temperature; for example, melon germination declined from almost 100% to zero when the temperatures were below the optimum (ca., 14 to 45°C) [54].…”

Section: Introductionmentioning

confidence: 99%

Effect of storage conditions and sodium hypochlorite treatment on germination of Cucumis prophetarum (Cucurbitaceae) seeds from arid Arabian deserts

Shabana

Mahmoud

Gairola

et al. 2021

Preprint

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“…Irradiation effects found in the present study also appear in literature. There are reports that seeds of tomato, Japanese radish and watermelon germinated optimally in the dark (Nakamura et al, 1955 ;Thanos and Mitrakos;1992), while perilla and Japanese hornwort seed germination were promoted by irradiation (Nakamura et al, 1955), and lettuce…”

Section: Discussionmentioning

confidence: 99%

“…For example, tomato cv. Taiwan Red was reported to be a light germinating seed (Gui et al, 1991), and germination in lettuce and carrot seeds was described to be promoted under irradiation (Nakamura et al, 1955 ;Gardner, 1921). From the variety of seed reactions mentioned above, we can not decide strictly which plant seed is sensitive positively, negatively, or insensitive to irradiation for germination.…”

Section: Effects Of Kuriyagawamentioning

confidence: 99%

“…The effects of irradiation on seed germination have been examined for many vegetable species; e.g., tomato (Gui et al, 1991), lettuce (Choi and Takahashi, 1979), carrot (Gardner, 1921), edible burdock (Nakamura, 1954), Cucurbitaceae (Ogawara and Watanabe, 1953;Suzuki and Takahashi, 1969;Thanos and Mitrakos, 1992) and many species (Nakamura et al, 1955). On the other hand, the penetration of light through soil has also been investigated (Tester and Morris, 1987).…”

Section: Introductionmentioning

confidence: 99%

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Response of Vegetable Seed Germination to Solar Radiation Penetrating through Soil.

Hamamoto

1999

J. Agric. Meteorol.

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Response of vegetable seeds to irradiation and emergence of plants seeded at various depths were investigated to clarify the effects of solar radiation through soil on vegetable seed germination. Seeds of eight vegetable species were germinated in Petri dishes under 11-h irradiation per day. Seed germination was delayed in tomato (Licopersicon esculentum Mill.) but accelerated in perilla (Perilla ocymoides L.) and Japanese hornwort (Cryptotaenia japonica Hassk.) with increase in irradiation at the intensities higher than 0.4 Wm-2. Seeds of Japanese radish (Raphanus sativus L.), watermelon (Citrullus lanatus Matsum.), and Chinese cabbage (Brassica campestris L.) showed delayed germination at more than 4-6 Wm-2. No effect of irradiation on lettuce (Lactuca sativa L.) and carrot (Daucus carota L.) seed germination was seen. For tomato, Japanese radish and Japanese hornwort, the effects of irradiation time on germination were also investigated. Tomato seed germination was delayed and Japanese hornwort seed germination was accelerated with increase in irradiation time beyond 2 h per day. The emergence of tomato and Japanese hornwort covered with Shimokuriyagawa loam soil (Kuriyagawa soil) and vermiculite at depths of less than 5 mm, 5-10 mm and 10-15 mm was observed. Plants emerged more rapidly from 5-10 mm depths than from less than 5 mm depth in tomato. The plants seeded at 10-15 mm depths emerged as rapidly as those at 5-10 mm depths using vermiculite but later than those at other depths using Kuriyagawa soil, probably due to high bulk density. The early emergence of Japanese hornwort was fastest from less than 5 mm depth. The plants seeded at 5-10 mm depths did not emerge much slower than those at less than 5 mm depth. A seeding depth of 5-10 mm was suitable for the rapid emergence of those vegetables covered with both the soil and vermiculite.

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Variation among individuals of Citrullus colocynthis from a desert population in morphological, genetic, and germination attributes

et al. 2021

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Effect of light on the germination of vegetable seeds

Cited by 9 publications

References 2 publications

Effect of storage conditions and sodium hypochlorite treatment on germination of Cucumis prophetarum (Cucurbitaceae) seeds from arid Arabian deserts

Effect of storage conditions and sodium hypochlorite treatment on germination of Cucumis prophetarum (Cucurbitaceae) seeds from arid Arabian deserts

Response of Vegetable Seed Germination to Solar Radiation Penetrating through Soil.

Variation among individuals of Citrullus colocynthis from a desert population in morphological, genetic, and germination attributes

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