Effect of Temperature on Expression of Gynomonoecy in Selfed-seed Populations of Spinacia oleracea L.

Hata, Naoki; Murakami, Kenji; Yoshida, Yuichi; Masuda, Masaharu

doi:10.2503/jjshs.74.228

Cited by 4 publications

(10 citation statements)

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“…the development to flower cluster formation stage (Kim et al, 2000) and bolting (Hata et al, 2005), a severe inhibition of flower stalk elongation occurred after the onset of the short photoperiodic treatment (Fig. 1), that resulted in decrease of flowering plants.…”

Section: Discussionmentioning

confidence: 99%

“…These conditions induced early bolting and anthesis 3 to 4 weeks from sowing, respectively (Hata et al, 2005). The seedlings were subirrigated with a complete nutrient solution (Ohtsuka A-Solution, Ohtsuka Chemical, Osaka, Japan) once a day from 1 week after sowing.…”

Section: Plant Materials and Culture Methodsmentioning

confidence: 99%

“…In selfed-seed populations of S. oleracea L. 'ShinNippon' (Atariya Seed, Chiba, Japan), one representative population (P-1) yielding a high frequency of gynomonoecious plants (Hata et al, 2005) was used in Expt. 1 and 2; its F 2 progenies were used in Expt.…”

Section: Plant Materials and Culture Methodsmentioning

confidence: 99%

“…An attempt to induce mutations by irradiation of spinach seed with ion beams suggested that recessive mutants could be obtained in M 2 generation through self-fertilization of gynomonoecious plants (Hata et al, 2006). For an efficient production of self-fertilized spinach seeds, it is desirable to cultivate selected lines with a strong expression of gynomonoecy at around 25°C after bolting induction at 20°C (Hata et al, 2005). Since spinach is a typical long-day plant (Knott, 1934), late March-June is the optimal season for producing the self-fertilized seeds under a natural photoperiod in Japan.…”

Section: Introductionmentioning

confidence: 99%

“…Temperature was set at 20°C, which is appropriate for the expression of gynomonoecy (Hata et al, 2005). Application of the results to seed production culture during early September-November was discussed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Photoperiod after Bolting on the Expression of Gynomonoecy in Spinacia oleracea L.

Hata¹,

Murakami²,

Yoshida³

et al. 2006

J. Japan. Soc. Hort. Sci.

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To shorten the breeding cycle in spinach, the effect of photoperiod after bolting on the expression of gynomonoecy was investigated by employing selfed-progeny of a gynomonoecious spinach plant. Seedlings were induced to bolt by an initial exposure to 16-h photoperiod under 140 µmol·m −2 ·s −1 PPFD and 20°C in a growth chamber for 3 weeks after sowing. When transferred to an 8-h photoperiod of the same PPFD, flower stalk elongation and flowering were severely inhibited; the frequency of gynomonoecious plants decreased to about a half of those under 12-and 16-h photoperiods. Under the short-day treatment, a few nodes with hermaphroditic flowers developed; the frequency of hermaphroditic flowers on gynomonoecious plants was 30, 39, and 63% under 8-, 12-, and 16-h photoperiod, respectively. Even when the light intensity under the 8-h photoperiod was doubled, the flower stalks elongated little, while 46% of the plants did not flower. When 8-h photoperiod under 280 µmol·m −2 ·s −1 PPFD was extended to 16-h, by using an incandescent lamp with an intensity of 10 µmol·m −2 ·s −1 PPFD, the seedlings produced flower stalks that were longer than those grown under 16-h photoperiod and 140 µmol·m −2 ·s −1 PPFD, and all plants flowered. There was no difference in the frequency of gynomonoecious plants and hermaphroditic flowers in both 16-h photoperiodic regimes. Extending the photoperiod to 24-h (constant light) from 8-h photoperiod at 280 µmol·m −2 ·s −1 with incandescent lights promoted flower stalk elongation more than did that by extending it to 16-h. However, the frequency of hermaphroditic flowers was almost the same in both the 16-and 24-h photoperiodic regimes. Thus, the expression of gynomonoecy after bolting in spinach was inhibited strongly under a short photoperiod and was promoted significantly by extending the photoperiod to 16-h, but extending the photoperiod to 24-h had no further effect. Therefore, it is important to extend the photoperiod to around 16-h for an efficient production of self-fertilized seeds in gynomonoecious spinach plants during the season with short photoperiods.

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Section: Discussionmentioning

confidence: 99%

Section: Plant Materials and Culture Methodsmentioning

confidence: 99%

Section: Plant Materials and Culture Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Photoperiod after Bolting on the Expression of Gynomonoecy in Spinacia oleracea L.

Hata¹,

Murakami²,

Yoshida³

et al. 2006

J. Japan. Soc. Hort. Sci.

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Fruit Set and Yield Enhancement in Tomato (Lycopersicon esculentum Mill.) Using Gibberellic Acid and 2,4-Dichlorophenoxy Acetic Acid Spray

Luitel¹,

Lee

Kang

2015

phpf

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High temperature stress in summer season at plastic house is a limiting factor for tomato fruit set and yield. This study was performed to assess the effects of gibberellic acid (GA 3 ) and 2,4-Dichlophenoxy acetic acid (2,4-D) spray on fruit set, yield, and quality of tomato cv. 'Adoration'(Enza Zaden Co., Ltd.) under the plastic house in Hwacheon, 2011. Four concentrations (0-, 5-, 10-and 15mg•L −1 ) of GA 3 , and three concentrations (0-, 5-and 10mg•L −1 ) 2,4-D were sprayed in early flowering of tomato in the plastic house, and fruit set, yield and quality characters were observed. The results showed that spray of 10mg•L −1 GA 3 significantly increased the fruit set by 14.2% than unsprayed. The spray of GA 3 significantly increased the marketable fruit number, fruit weight, and yield. The spray of 2,4-D on blossoms significantly affected the fruit set percentage, fruit weight, marketable fruit weight and yield, and the highest fruit set observed as 62.5% in combined spray of GA 3 and 2,4-D at each 5mg•L −1 . Fruit size and total soluble solids significantly varied with the concentrations of GA 3 sprayed. The result indicates that the spray of 10mg•L −1 GA 3 and 5mg•L −1 2,4-D can be more economic and effective to increase the fruit set, and yield in tomato under high temperature condition in plastic house.

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Low-oxalate Spinach Mutant Induced by Chemical Mutagenesis

Murakami

Edamoto

Hata

et al. 2009

J. Japan. Soc. Hort. Sci.

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Effect of Temperature on Expression of Gynomonoecy in Selfed-seed Populations of Spinacia oleracea L.

Cited by 4 publications

References 4 publications

Effect of Photoperiod after Bolting on the Expression of Gynomonoecy in Spinacia oleracea L.

Effect of Photoperiod after Bolting on the Expression of Gynomonoecy in Spinacia oleracea L.

Fruit Set and Yield Enhancement in Tomato (Lycopersicon esculentum Mill.) Using Gibberellic Acid and 2,4-Dichlorophenoxy Acetic Acid Spray

Low-oxalate Spinach Mutant Induced by Chemical Mutagenesis

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