“ITOSAI No. 1”, a new late bolting cultivar of Chinese cabbage (<i>Brassica rapa</i> L.)

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  • Kitamoto Naoko
    Faculty of Agriculture, Iwate University Present address: Faculty of Bio-Resources Science, Akita Prefectural University
  • Nishikawa Kazuhiro
    SAKATA SEED CORPORATION, Kimitsu Research Station
  • Toyota Haruki
    Field Science Center, Faculty of Agriculture, Iwate University
  • Takahashi Kiwamu
    Field Science Center, Faculty of Agriculture, Iwate University
  • Tsukazaki Hikaru
    Tohoku Agricultural Research Center, National Agriculture and Food Research Organization
  • Tanimura Yoshinori
    SAKATA SEED CORPORATION, Kimitsu Research Station
  • Moritama Yosuke
    SAKATA SEED CORPORATION, Kimitsu Research Station
  • Yokoi Shuji
    Faculty of Agriculture, Iwate University Present address: School of Agriculture, Osaka Metropolitan University
  • Honjo Masanori
    Tohoku Agricultural Research Center, National Agriculture and Food Research Organization
  • Takahata Yoshihito
    Faculty of Agriculture, Iwate University Present address: Iwate Biotechnology Research Center
  • Hatakeyama Katsunori
    Faculty of Agriculture, Iwate University
  • Oku Satoshi
    Tohoku Agricultural Research Center, National Agriculture and Food Research Organization
  • Urushibara Shoji
    Iwate Agricultural Research Center Present address: Northern Region Agricultural Institute, Iwate Agricultural Research Center
  • Wazaki Toshifumi
    Field Science Center, Faculty of Agriculture, Iwate University Present address: Hokkaido Research Organization, Agricultural Research Department Kitami Agricultural Experiment Station
  • Kawato Yoshinori
    Iwate Agricultural Research Center Present address: Miyako Agriculture Extension Center
  • Kataoka Sono
    Tohoku Agricultural Research Center, National Agriculture and Food Research Organization Present address: Institute of Vegetable and Floriculture Science, National Agriculture and Food Research Organization
  • Matsuura Takuya
    Iwate Agricultural Research Center Present address: Hachimantai Agriculture Extension Center
  • Yui Susumu
    Field Science Center, Faculty of Agriculture, Iwate University Tohoku Agricultural Research Center, National Agriculture and Food Research Organization

Bibliographic Information

Other Title
  • 晩抽性のハクサイ品種「いとさい1号」の育成
  • バンチュウセイ ノ ハクサイ ヒンシュ 「 イ ト サイ 1ゴウ 」 ノ イクセイ

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Abstract

<p>‘ITOSAI No. 1’ is a new Chinese cabbage F1 cultivar that shows extremely late bolting. Late-bolting BrFLC genes derived from ‘Leafy Parental Green No. 2’ were introduced to the parents of the Chinese cabbage F1 cultivar ‘Tiny-chouchou’ with backcrossing and DNA marker selection. In spring sowing under a low temperature, ‘ITOSAI No. 1’ showed extremely late bolting compared to commercial late-bolting F1 cultivars. Other characteristics of ‘ITOSAI No. 1’, except the late bolting, are almost the same as ‘Tiny-chouchou’, including no trichomes. It is suitable for use in salads. Whereas the existing commercial F1 cultivars bolted after 10 to 20 days of chilling treatment, ‘ITOSAI No. 1’ needs more than 40 days to induce bolting. ‘ITOSAI No. 1’ is an epoch-making cultivar which enables us to cultivate Chinese cabbage in spring without heating and covering materials.</p>

Journal

  • Breeding Research

    Breeding Research 25 (2), 150-157, 2023-12-01

    Japanese Society of Breeding

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