Promotion of Seedling Growth of Seeds of Rice (Oryza sativa L. cv. Hitomebore) by Treatment with H_2O_2 before Sowing(Crop Physiology and Ecology)

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概要

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• High germinability of seeds and establishment of young seedlings in rice (Oryza sativa L.) are necessary for direct seeding in paddy fields. We investigated whether germinability and seedling growth were promoted by treatment of rice seeds (cv. Hitomebore) with hydrogen peroxide solution (H_2O_2) during the imbibition for 24h. H_2O_2 treatment with 50mM H_2O_2 promoted seed germination, and seedling growth (shoot length, root length and shoot fresh weight) in agar culture under a low temperature condition (18℃ day/14℃ night). Seedling growth was promoted by H_2O_2 treatment not only under the low-temperature condition but also under a normal (23℃ day/18℃ night) temperature condition. Furthermore, H_2O_2 treatment promoted seedling growth under a flooding condition in a greenhouse. These results suggest that H_2O_2 treatment of rice seeds during the imbibition is advantageous for direct seeding. We discussed the relation between the promotion of the seed germinability and the seedling growth under a low-temperature condition, and the expression of some genes encoding ROS scavenger enzymes induced by H_2O_2 treatment.

• 日本作物学会の論文

著者

• Abe Fumitaka

  Graduate School Of Agricultural Science Tohoku University:national Institute Of Crop Science

• Sato Tadashi

  Graduate School of Life Sciences, Tohoku University

• SASAKI Kazuhiro

  Graduate School of Life Sciences, Tohoku University

• Sato Tadashi

  Graduate School Of Life Sciences Tohoku University

• Kishitani Sachie

  Graduate School Of Agric. Sci. Tohoku Univ.

• Kishitani Sachie

  Graduate School Of Agricultural Science Tohoku University

• Sato Tadashi

  Graduate School Of Life Sci. Tohoku Univ.

• Sasaki Kazuhiro

  Graduate School Of Life Sciences Tohoku University

• Sasaki Kazuhiro

  Graduate School Of Agricultural Science Tohoku University:graduate School Of Life Sciences Tohoku Un

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