「KTn03-54」は2012 年に農研機構九州沖縄農業研究センターが育成した,早期高糖で茎重型のサトウキビ品種である。2013 年に鹿児島県熊毛地域の奨励品種に採用されるとともに,農林水産省から「さとうきび農林32 号」の農林認定を受けた。「KTn03-54」は太茎で脱葉性に優れる「ROC14」を種子親,多収の「CP57-614」を花粉親とする交配から得た実生集団から育成した。選抜においては,早期高糖性,一茎重,脱葉性を重視した。熊毛地域の栽培における課題は製糖開始期の蔗汁糖度が低いことである。「KTn03-54」は基幹品種「NiF8」と比較して早期高糖性であり,収穫時の蔗汁糖度も高い。また,一茎重が大きく,脱葉性が良いため,収穫や梢頭部除去の軽労化が図れる。一方,モザイク病に弱い欠点を有する。「NiF8」の代替として「KTn03-54」を利用することで,熊毛地域における製糖開始期の蔗汁糖度の改善が期待される。
“KTn03-54” is a stalk weight type sugarcane variety with early maturing developed by the NARO Kyushu Okinawa Agricultural Research Center in 2012. It was adopted as a recommended variety for the Kumage region of Kagoshima Prefecture in 2013. And it was also authorized by MAFF and given the name of “Nourin 33” in the same year. This variety was selected from the progenies derived from a cross between ROC14 with thick stalk diameter and easy detrashing as a seed parent and CP57-614 with high yield as a pollen parent. In this clonal selection, we emphasized such traits as early maturing, single stalk weight and detrashing. Low juice quality at the initial period of sugarcane milling
is a concern in the cultivation of Kumage region. The maturing of “KTn03-54” is earlier than that of “NiF8” which is a leading variety in this region. Therefore, juice quality of “KTn03-54” is higher than that of “NiF8” at the harvest. “KTn03-54” also has such traits as heavy single stalk weight and easy detrashing that contribute to labor-saving. As for disadvantage of “KTn03-54”, it is
susce ptible to mosaic disease. It is expected that replacing “NiF8” with “KTn03-54” will improve the juice quality at the initial period of sugarcane milling of Kumage region.
雑誌名
農研機構研究報告 九州沖縄農業研究センター
雑誌名(英)
Bulletin of the NARO, Agricultural Research for Kyushu Okinawa Region
号
66
ページ
1 - 20
発行年
2017-03
出版者
国立研究開発法人 農業・食品産業技術総合研究機構
National Agriculture and Food Research Organization (NARO)