Honda Motor Co., Ltd.

Nagoya University

Hidemi Kitano

Tomonori Takashi

Toshiro Komura

Yoichi Morinaka

Kenji Jinushi

Makoto Matsuoka

Motoyuki Ashikari

Isomaro Yamaguchi

Masatoshi Nakajima

Miyako Ueguchi

Provided is a method for producing a rice F1 seed, including crossing a rice male sterile line of Koshihikari containing one or more genes selected from the group consisting of the sd1 gene, the Gn1 gene and the hd1 gene derived fromL. cultivar Habataki, or a rice male sterile line exhibiting semi-waxiness as a seed parent, with a rice fertility restorer line as a pollen parent, and collecting the first filial generation seed (F1 seed) from the post-crossing seed parent; and a rice male sterile line containing one or more genes selected from the group consisting of the sd1 gene, the Gn1 gene and the hd1 gene derived fromL. cultivar Habataki.

Method for producing rice F1 seed, rice F1 seed, and rice male sterile line

Provided is a method for producing a rice F1 seed including crossing a rice male sterile line of Koshihikari containing one or more genes selected from the group consisting of the Pb1 gene derived from a rice (L) cultivar Modan and the Cr1 gene derived from, as a seed parent, with a rice fertility restorer line as a pollen parent, and collecting the first filial generation seed (F1 seed) from the post-crossing seed parent; a rice F1 seed which is obtained by the above-described method for producing a rice F1 seed; and a rice cytoplasmic male sterile line including one or more genes selected from the group consisting of the Pb1 gene derived from rice (L) cuitibar Modan, and the Cr1 gene derived from

An objective of the present invention is to provide gibberellin-binding proteins, genes encoding such proteins, and applications therefor. The proteins of the present invention function as cytoplasmic receptors for gibberellin and mediate gibberellin response in plants. Plants overexpressing such genes exhibited gibberellin-hypersensitive phenotypes, such as increased plant height. In contrast, plants in which the genes were mutated exhibited gibberellin-insensitive phenotypes, and thus became dwarfed. Accordingly, plant differentiation and growth can be regulated by introducing the gibberellin-binding genes of the present invention or by suppressing the expression of same.

Regulatory genes for plant differentiation and growth, and use of the same

Growing community of inventors

Nagoya, Japan

Hidemi Kitano