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Flower Bud Differentiation in Response to Low Temperature Treatment and Day-length Extension Treatment in Radish (Raphanus sativus L.)
저온 및 일장 처리가 무의 화아분화에 미치는 영향
Korean J. Breed. Sci. 2016;48(1):048-53
Published online March 31, 2016
© 2016 Korean Society of Breeding Science.

Sun Im Hwang1, Jeong Eum Kim1, and Haeyoung Na1,2*
황순임1?김정음1?나해영1,2*

1Major in Horticultural Science, Mokpo National University, Muan 58554, Korea2Institute of Natural Resources, Mokpo National University, Muan 58554, Korea
1목포대학교 원예과학과, 2목포대학교 자연자원개발연구소
Abstract
Flower bud differentiation by temperature and photoperiod was investigated in early-, medium-, and late-maturing cultivars of radish (Raphanus sativus L.). Flower bud differentiation was induced by only day-length extension treatment (18 hr light/day) in early - and medium-maturing cultivars. Therefore, the early- and medium-maturing cultivars of radish were advanced the time of the flowering by the 2 weeks low temperature duration with day-length extension (18 hr light/day). The vegetative growth of early- and medium-maturing cultivar was the best by only day-length extension (18 hr light/day). However, late-maturing cultivar was needed for the flower bud differentiation and optimal vegetative growth not only long-day but also low temperature during 4~6 weeks at least. Our results suggest the optimal condition for flower bud differentiation in the each early-, medium-, and late-maturing cultivars of radish, which will be useful to develop breeding materials of radish
Keywords : Breeding material, Early-maturing cultivar, Flowering, Late-maturing cultivar, Medium-maturing cultivar


June 2019, 51 (2)
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