@article{oai:repository.naro.go.jp:00001221,
 author = {遠藤, 貴司 and ENDO, Takashi and 山口, 誠之 and YAMAGUCHI, Masayuki and 片岡, 知守 and KATAOKA, Tomomori and 中込, 弘二 and 滝田, 正 and TAKITA, Tadashi and 東, 正昭 and HIGASHI, Tadaaki and YOKOGAMI, Narifumi and 横上, 晴郁 and 加藤, 浩 and KATO, Hiroshi and 田村, 泰章 and TAMURA, Yasuaki and 小綿, 寿志 and KOWATA, Hisashi and 小山田, 善三 and OYAMADA, Zenzo and 春原, 嘉弘 and SUNOHARA, Yoshihiro and NAKAGAMI, Koji},
 journal = {東北農業研究センター研究報告, Bulletin of TOHOKU Agricultural Research Center},
 month = {Mar},
 note = {Koiazusa is a new rice cultivar with a giant, nonglutinous embryo developed at the National Agricultural Research Center for Tohoku Region, NARO, registered as Paddy Rice "Norin 407" by the Ministry of Agriculture, Forestry and Fisheries (MAFF) in 2005. It was selected from the progenies of a cross Hokkai269/Ouu316 carried out in 1989. The maturity is almost same as "Akitakomachi" and is classified as early group in Tohoku region. Compared to "Akitakomachi," the culm height is shorter, and lodging resistance is stronger. The grain shape of the brown rice is a slightly more round, and the 1000 grain weight is slightly less. In terms of embryo size, the length is about 1.3 times longer and the weight is about 1.9 times more than that of "Akitakomachi." The grain yield is almost same as that of "Akitakomachi." It has true resistance genes to blast, "Pia, Pik", while the field resistance to leaf and panicle blasts are weak. Cool weather tolerance at its reproductive stage is very high and seed dormancy is easy to overcome. Grain quality is poor because luster is inferior. As for the eating quality, the milled rice is clearly inferior to "Akitakomachi," but the pre-germinated brown rice is only slightly inferior to "Akitakomachi." The Gamma-aminobutyric acid (GABA) content in the grain is high and that of the pre-germinated brown rice is about 1.6-1.8 times as high as that of the usual varieties. It can be expected as an emergent high-GABA brown rice for processing. "Koiazusa" can be adapted to Tohoku district and other areas where "Akitakomachi" can be grown. Its cultivation requires sowing about 1.5 times the normal amount of seeds, since the emergence of its seedlings is inferior to that of common varieties., 「恋あずさ」は, 1989 年に巨大胚粳系統「北海269 号」と「奥羽316 号」を交配し, その後代から育成した巨大胚粳品種であり, 2005 年に水稲農林407 号として命名登録された。出穂期, 成熟期は育成地 (秋田県大仙市) では「あきたこまち」とほぼ同じ "早生の晩" に属し, 稈長は「あきたこまち」よりも短く, 耐倒伏性が強い。玄米の粒形がやや円く, 玄米千粒重はやや小さい。収量性は「あきたこまち」並である。胚芽の大きさは, 「あきたこまち」に比べて胚芽長が約1.3 倍, 胚芽重は約1.9 倍ある。いもち病真性抵抗性遺伝子型は "Pia, Pik" と推定され, 圃場抵抗性は, 葉いもち, 穂いもちともに "弱" である。障害型耐冷性は "極強" であり, 穂発芽性は" やや易" である。玄米品質は光沢が劣り "中下" , 白米の食味は「あきたこまち」より明らかに劣る "中中" であり, 発芽玄米としての食味は「あきたこまち」の発芽玄米と比較してやや劣る。玄米中のγ－アミノ酪酸 (GABA) 含量は一般品種に比べて高く, 発芽玄米にした場合は約1.6 ～ 1.8 倍である。したがって, GABA が豊富な加工用米としての利用が期待できる。　栽培適地は, 「あきたこまち」が栽培できる東北地域及び東北地域以南である。栽培上の留意点は, 出芽が一般品種に比べて劣るため, 育苗時に播種量を通常より約1.5 倍量に増やして苗立ちを確保することである。},
 pages = {1--16},
 title = {耐冷性の強い巨大胚水稲新品種「恋あずさ」の育成},
 volume = {105},
 year = {2006},
 yomi = {エンドウ, タカシ and ヤマグチ, マサユキ and カタオカ, トモモリ and ナカゴミ, コウジ and タキタ, タダシ and ヒガシ, タダアキ and ヨコガミ, ナリフミ and カトウ, ヒロシ and タムラ, ヤスアキ and コワタ, ヒサシ and オヤマダ, ゼンゾウ and スノハラ, ヨシヒロ}
}