'Milky Star', a new rice cultivar with late-planting suitability and low-amylose content in endosperm
2012
Ishii, T. | Ando, I. | Nemoto, H. | Kato, H. | Ota, H. | Hirabayashi, H. | Takeuchi, Y. | Maeda, H. | Imbe, T. | Sato, H. | Hirayama, M. | Ideta, O. | Sakai, M. | Tamura, K. | Aoki, N.
'Milky Star' is a new paddy rice cultivar with a low-amylose content in the endosperm that was established by the National Institute of Crop Science, NARO in 2008. This cultivar was selected from a cross between 'Tohoku 168' and 'Kanto 194 (Milky Princess)' conducted in 1998. 'Milky Star' had been evaluated for its characteristics under the name 'Kanto 224' since 2005. The superiority of 'Milky Star' was confirmed in late-planting performance tests, and an application to the Ministry of Agriculture, Forestry, and Fishery for official registration was made in 2009. Its main characteristics in late-planting tests are described below. The heading and maturing dates of 'Milky Star' were one day and two days later than that of 'Milky Princess', respectively. Its maturity is classified into 'early' in the Kanto region. The culm height and panicle length of 'Milky Star' were similar to 'Milky Princess', however, the number of its panicles was less than that of 'Milky Princess'. The lodging tolerance of 'Milky Star' was superior and evaluated as 'high'. According to the yield trial tests by the National Institute of Crop Science, its yield of brown rice was 12% more than that of 'Milky Princess'. 'Milky Star' is a non-glutinous cultivar with a low-amylose content. Therefore, the cooked rice of 'Milky Star' is sticky and its eating quality is comparable or a little inferior to that of 'Milky Princess'. 'Milky Star' shows resistance to rice stripe disease where resistance is necessary after wheat or barley cultivation. From the above-mentioned characteristics, 'Milky Star' is expected to be suitable for use as a late-planting cultivar in a double cropping area with wheat or barley.
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