High ratoon yield sugarcane cultivar “Harunoogi” developed for Kumage region by using an interspecific hybrid between a commercial cultivar and Saccharum spontaneum L.
2019
Hattori, T. (Kyushu Okinawa Agricultural Research Center, NARO (Japan)) | Terajima, Y. | Sakaigaichi, T. | Terauchi, T. | Tarumoto, Y. | Adachi, K. | Hayano, M. | Tanaka, M. | Ishikawa, S. | Umeda, M. | Matsuoka, M. | Sugimoto, A.
“Harunoogi” is a new sugarcane cultivar jointly developed by the NARO Kyushu Okinawa Agricultural Research Center and the Japan International Research Center for Agricultural Sciences. It shows vigorous initial growth after ratooning and high ratoon yield in the Kumage region in the Kagoshima Prefecture, and has been applied for variety registration for the region in March 2019. “Harunoogi” was selected from progenies derived from crossing between a high ratoon yield forage cultivar “KRFo93-1” as seed parent and a thick-stalk early maturing cultivar “NiN24” as pollen parent. The “KRFo93-1” was developed by interspecific hybridization of a commercial sugarcane cultivar with a wild sugarcane (Saccharum spontaneum L.). Ratooning ability and number of tillers of “Harunoogi” are higher than those of “NiF8”, which is a major cultivar in the Kumage region. Even though single stalk weight of “Harunoogi” is smaller than “NiF8”, stalk yield is much higher compared to “NiF8” due to its large number of millable stalks in both plant and ratoon crops. Sucrose content of “Harunoogi” is comparable with “NiF8”. As a result, sugar yield of “Harunoogi” is much higher than “NiF8”. In addition, “Harunoogi” has good adaptability for mechanical harvesting because of its high lodging-resistance and vigorous initial growth in ratoon crop after mechanical harvesting. High ratoon yield under mechanical harvesting system has been recognized as one of the most important characteristics of sugarcane cultivar in the Kumage region where ratoon yield has been decreasing for recent years. “Harunoogi” is expected to play an important role in recovery from a decline of sugarcane yield in the region.
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