@article{oai:repository.naro.go.jp:00001395,
 author = {浦上, 敦子 and URAGAMI, Atsuko and 伊藤, 喜三男 and ITO, Kimio and 永井, 信 and NAGAI, Makoto and 吉川, 宏昭 and YOSHIKAWA, Hiroaki and 佐藤, 裕 and SATO, Yutaka and 小餅, 昭二 and KOMOCHI, Shoji and 田中, 征勝 and TANAKA, Masakatsu and 室, 崇人 and MURO, Takato and 森下, 昌三 and MORISHITA, Masami},
 journal = {北海道農業研究センター研究報告, Research BUlletin of the NARO Hokkaido Agricultural Research Center},
 month = {Mar},
 note = {Zuiyu' is a new all-male asparagus hybrid variety for cool regions in Japan. This cultivar was released by Hokkaido National Agricultural Experiment Station (present name : National Agricultural Research Center for Hokkaido Region) and registered as Norin hybrid No.1' of asparagus with Japan's Ministry of Agriculture, Forestry and Fisheries (MAFF) in 1999. 'Zuiyu' is an F1 hybrid resulting from a cross of the clonal seed parent 'Zuiyo-2' and the pollen parent 'ZM-19'. 'Zuiyu' yield is higher than that of the standard cultivar 'Hokkai100', and its spear weight is slightly larger and spear emergence is earlier. 'Zuiyu' is an all-male cultivar, although up to 30% of plants bear berries in some years. The number of seeds, however, is very small. The color of spears is similar to that of 'Hokkai100' . Spear-head tightness and spear uniformity are better than those of 'Hokkai100'. Anthocyanin pigmentation in leaves is slightly weaker than that of 'Hokkai100'. Plant height is larger than that of 'Hokkai100' and 'UC157'. 'Zuiyu' is a cultivar for green asparagus production, and it is suitable for the cold upland area in Honshu and in Tohoku and Hokkaido regions.},
 pages = {1--9},
 title = {アスパラガス全雄性新品種「ズイユウ」の育成とその特性},
 volume = {193},
 year = {2011},
 yomi = {ウラガミ, アツコ and イトウ, キミオ and ナガイ, マコト and ヨシカワ, ヒロアキ and サトウ, ユタカ and コモチ, ショウジ and タナカ, マサカツ and ムロ, タカト and モリシタ, マサミ}
}