@article{oai:repository.naro.go.jp:00001434, author = {三木, 一嘉 and MIKI, Kazuyoshi and 濃沼, 圭一 and KOINUMA, Keiichi and 榎, 宏征 and ENOKI, Hiroyuki}, 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 = {Dec}, note = {A new silage maize cultivar, "Hokko 65", was developed and registered as "Maize Norin Kou 65" by the Japanese Ministry of Agriculture, Forestry and Fisheries in 2008. "Hokko 65" is a single cross hybrid between two inbred lines, the dent inbred line "Ho102" as a seed parent and the flint inbred line "Ho95" as a pollen parent. "Hokko 65" is adaptable to the central and southern areas of Hokkaido and the northern Tohoku region. It is classified into the late maturity group in Hokkaido and the early maturity group in Tohoku region. The silking date is one day earlier than that of "35G86" and later than that of "36B08" by one day or less. The whole plant dry matter content of "Hokko 65" is the same as that of "35G86" and slightly lower than that of "36B08". "Hokko 65" shows better early growth than that of "35G86" and "36B08". Lodging resistance of "Hokko 65" is higher than that of "35G86" and as high as that of "36B08". Resistance level of "Hokko 65" to northern corn leaf blight (Setosphaeria turcica) is high, and the level is slightly higher than that of "35G86" and slightly lower than that of "36B08". Resistance level of "Hokko 65" to southern corn leaf blight (Cochliobolus heterostrophus) is moderately strong, and it is as high as that of "35G86" and slightly lower than that of "36B08". The average dry matter yield of "Hokko 65" is 5% lower than that of "35G86" and 3% lower than that of "36B08" in Hokkaido, and it is 2% higher than that of "36B08" in northern Tohoku region. The ear content of "Hokko 65" is higher than those of "35G86" and "36B08" in Hokkaido and is the same as that of "36B08" in northern Tohoku region. The content of the highly digestible fraction (OCC + Oa) and digestibility of fiber (Oa/OCW) in the whole plant of "Hokko 65" are higher than those of "35G86" and "36B08". The TDN content in the whole plant of "Hokko 65" is 2.3 and 1.5 points higher than those of "35G86" and "36B08", respectively. Therefore, TDN yield of "Hokko 65" is considered to be the same as that of" 36B08" in Hokkaido and 5% higher than that of "36B08" in northern Tohoku region. Suitable planting density of "Hokko 65" is 700 – 780 plants per are, and the adaptability of "Hokko 65" to higher planting density is as high as that of "35G86" and "36B08"., サイレージ用トウモロコシの新品種「北交65号」は, TDN 含量の高い安定・多収品種の育成を目標に, デント種自殖系統「Ho102」を種子親とし, フリント種自殖系統「Ho95」を花粉親として育成された単交雑一代雑種である。2008年に北海道優良品種に認定されるとともに「トウモロコシ農林交65号」として農林認定品種に登録された。早晩性は, 北海道では "晩生の早", 東北地方では "早生" に属し, 北海道の道央中部(上川を除く), 道央南部および道南地域ならびに東北地方の青森県, 岩手県および宮城県を栽培適地とする。絹糸抽出期は「35G86」より1日早く「36B08」並か1日遅い。収穫時の乾物率は「35G86」並で「36B08」並かやや低い。発芽期は「35G86」より1日早く「36B08」並かやや早い。初期生育は「35G86」および「36B08」より優れている。稈長は「35G86」と「36B08」の中間で, 着雌穂高は「35G86」より低く「36B08」並かやや高い。耐倒伏性は「35G86」より強く「36B08」並である。すす紋病抵抗性は "強" で, 「35G86」よりやや強く「36B08」よりやや弱い。ごま葉枯病抵抗性は "やや強" で, 「35G86」並で「36B08」並かやや弱い。乾物収量は北海道では「35G86」より5%, 「36B08」より3%それぞれ低いが, 東北地方では「36B08」より2%高い。乾雌穂重割合は, 北海道では「35G86」および「36B08」より高く, 東北地方では「36B08」並である。ホールクロップの飼料成分は, 酵素法による高消化性分画の含量(OCC+Oa)および繊維の消化性(Oa/OCW)がいずれも標準品種より高く, TDN 含量は「35G86」より2.3ポイント, 「36B08」より1.5ポイント高い。密植適性は「35G86」および「36B08」と同程度に高く, 適正栽植密度はアール当たり700~780本程度である。}, pages = {35--54}, title = {サイレージ用トウモロコシの寒地向き高 TDN 品種「北交65号」の育成}, volume = {204}, year = {2015}, yomi = {ミキ, カズヨシ and コイヌマ, ケイイチ and エノキ, ヒロユキ} }