“Hoshijirushi,” a new paddy rice variety for commercial use with high yield, good eating quality, and rice stripe virus resistance was released by the National Institute of Crop Science, Japan, in 2011. The variety was selected from a cross done in 2001 between “Kanto 199” and “Kanto 209, registered name Satojiman.” “Kanto 199” is a promising line with lodging resistance and suitability for direct seeding. “Satojiman” is a variety with a good eating quality and possesses the rice stripe virus (RSV) resistance gene, Stvb-i .
A promising line, named “Kanto 238,” was selected from the cross at the F8 generation. “Kanto 238” has been subjected to local adaptability tests since 2008. It was officially registered as “Hoshijirushi” by the Ministry of Agriculture Forestry and Fisheries of Japan in 2014. Its main characteristics are as follows: it is a non-glutinous variety and belongs to the moderate maturation group in the Kanto region, it shows high lodging resistance and is high yielding; eating quality of the cooked rice (of “Hoshijirushi”) is comparable to that of “Koshihikari” (one of the best varieties for their eating quality in Japan), and it possesses the Stvb-i gene and, therefore, shows resistance to RSV.
Accordingly, the cropping of “Hoshijirushi” is suitable for areas where RSV is epidemic or for areas where rice is a succeeding crop of winter wheat or barley, and the rice products made from it are suitable for commercial use, i.e ., rice ball, bento rice, and heat-and-eat rice.
雑誌名
農研機構研究報告 次世代作物開発研究センター
雑誌名(英)
BULLETIN OF THE NARO, CROP SCIENCE
巻
2
ページ
35 - 51
発行年
2019-03-31
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)
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縞葉枯病抵抗性を備え業務用米に向く多収・良食味水稲新品種「ほしじるし」の育成
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