학술논문
'ITOSAI No. 1', a new late bolting cultivar of Chinese cabbage (Brassica rapa L.) / 晩抽性のハクサイ品種「いとさい1号」の育成
Document Type
Journal Article
Author
Haruki Toyota; Hikaru Tsukazaki; Katsunori Hatakeyama; Kazuhiro Nishikawa; Kiwamu Takahashi; Masanori Honjo; Naoko Kitamoto; Satoshi Oku; Shoji Urushibara; Shuji Yokoi; Sono Kataoka; Susumu Yui; Takuya Matsuura; Toshifumi Wazaki; Yoshihito Takahata; Yoshinori Kawato; Yoshinori Tanimura; Yosuke Moritama; 北本 尚子; 和﨑 俊文; 塚﨑 光; 奥 聡史; 川戸 善徳; 本城 正憲; 松浦 拓也; 森玉 陽介; 横井 修司; 漆原 昌二; 片岡 園; 由比 進; 畠山 勝徳; 西川 和裕; 谷村 佳則; 豊田 春喜; 高橋 極; 高畑 義人
Source
育種学研究 / Breeding Research. 2023, 25(2):150
Subject
Language
Japanese
ISSN
1344-7629
1348-1290
1348-1290
Abstract
‘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.