Breeding a new rice [Oryza sativa] cultivar "Ayanatsuki"
2006
Wakamatsu, K.(Kagoshima-ken. Agricultural Experiment Station (Japan)) | Higashi, T. | Kamikado, T. | Tanogashira, T. | Yoshida, N. | Shigemizu, T. | Tanaka, A. | Takemure, M.
'Ayanatsuki' is a new rice cultivar with low amylose developed at Crop Science Division of Kagoshima Agricultural Experiment Station in 2004. The cultivar was through the cross between 'Aya (low amylose)' and 'KG36 (Nankai52 / Koshihikari)' in 1997. It is the first cultivar with low amylose adaptable for cropping of autumn harvesting type in Kagoshima area. 'Ayanatsuki' had been evaluated as KG 200 in adaptability tests since 2002, and evaluated as 'Kagoshima 22' in field performance tests at six different spots in a prefecture since 2003. Based on these evaluations, the strain was regiered under application as a new cultivar, 'Ayanatsuki', in 2005. The Kagoshima prefecture adopted it as the official cultivar in 2004. Compared to the check variety,'Hanasatsuma', 'Ayanatsuki' has: 1. a heading date late for one days. 2. the same culms length, higher resistance to lodging. 3. the same grade yielding ability. 4. the first low-amylose content cultivar adaptable to the normal season culture in Kagoshima. 5. a highly palatability for rice, making superior by blending Ayanatsuki with some other cultivars. 6. the same grade field resistance to rice blast ('Ayanatsuki' is considered to contains the blast resistance gene Pia).
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