「コシヒカリ」との作期分散が可能な大粒で極良食味の水稲新品種「みずほの輝き」の育成

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タイトル別名
  • A New Rice Cultivar, "Mizuhonokagayaki", with Excellent Cooked Grain Appearance and Palatability
  • 「 コシヒカリ 」 ト ノ サクキ ブンサン ガ カノウ ナ オオツブ デ ゴク リョウ ショクミ ノ スイトウ シン ヒンシュ 「 ミズホ ノ カガヤキ 」 ノ イクセイ

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説明

A new rice cultivar, 'Mizuhonokagayaki', has been developed at the NARO Hokuriku Research Center. The grains of this cultivar are non-glutinous and have excellent cooked appearance and palatability. 'Mizuhonokagayaki' was bred from the progeny of a cross between Hokuriku 174 and Chubu 98 in 1996. A promising line was selected and named Hokuriku 200 at the F_9 generation in 2003. Hokuriku 200 was submitted to various locations for evaluation of local adaptability, and in 2008 it was named 'Mizuhonokagayaki'. The agronomic characters of 'Mizuhonokagayaki' are as follows. The heading date is 8 days later and the ripening date is 10～12 days later than those of 'Koshihikari'. Compared with 'Nipponbare', the culm length is the same, the panicle is slightly shorter, and there are slightly fewer panicles. The plant type is classified as medium. The yield of 'Mizuhonokagayaki' is slightly higher than that of 'Nipponbare'. The 1000-grain weight is 1.5 g more than that of 'Nipponbare'. Grain appearance is similar to that of 'Nipponbare'. 'Mizuhonokagayaki' is estimated to possess the true blast resistance gene Pii. Field resistance to leaf blast and panicle blast is classified as moderately strong. The cooked appearance and eating quality of 'Mizuhonokagayaki' rice are of the same excellent standard as those of 'Koshihikari'. 'Mizuhonokagayaki' can be grown from Hokuriku area to Kyushu area.

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