Korean Journal of Breeding Science (한국육종학회지)

The Korean Society of Breeding Science (한국육종학회)
권호 표지

Bulb Storability of Red and Yellow Onion (Allium cepa L.) Cultivars Grown in Korea

  • Nam, Euri (Department of Plant Biotechnology, Biotechnology Research Institute, Chonnam National University) ;
  • Cho, Dong Youn (ONBREETECH Corp.) ;
  • Lee, Eul-Tai (Mokpo Experiment Station, National Institute of Crop Science, RDA) ;
  • Kim, Cheol-Woo (Mokpo Experiment Station, National Institute of Crop Science, RDA) ;
  • Han, Taeho (Department of Plant Biotechnology, Biotechnology Research Institute, Chonnam National University) ;
  • Yoon, Moo-Kyoung (National Institute of Horticultural & Herbal Science, RDA) ;
  • Kim, Sunggil (Department of Plant Biotechnology, Biotechnology Research Institute, Chonnam National University)
  • Received : 2011.06.20
  • Published : 2011.06.30
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Abstract

The bulb storability of eight red and ten yellow onion (Allium cepa L.) cultivars grown primarily in Korea was evaluated. During storage, sprouting occurred earlier in red cultivars than in yellow cultivars. In addition, the ratio of sprouted to unsprouted bulbs increased more rapidly in red cultivars than in yellow cultivars. However, not all yellow cultivars had strong storabilities. Bulb storability of three yellow cultivars was as poor as that of red cultivars, suggesting only a slight possibility of a pleiotropic effect of color and bulb storability. Meanwhile, $F_3$ lines of a red cultivar selected based on stronger storabilities showed intermediate storabilities between those of the red and yellow cultivars, implying that strong storability could be obtained by successive selection. In contrast, $F_1$ hybrids from crosses between yellow and red breeding lines showed poor storability compared with the yellow cultivars, indicating that poor storability may be dominant over strong storability. The relationships between color and other traits that potentially affect storability, such as fresh and dry weight, water content, and firmness of bulbs, were evaluated. No significant differences in these traits were observed between the two colors, although the water content of yellow cultivars and the dry weight of red cultivars were slightly higher than their counterparts. Correlation analyses between bulb storability and other traits, including weight, water content, and firmness, also showed no significant correlations. In this study, no correlations were identified between bulb color, storability, and other traits. However, based on these results, red cultivars with stronger storabilities could be developed through successive selection of bulbs with stronger storabilities.

Keywords

Acknowledgement

Supported by : Agriculture Research Center, RDA

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