Effects of Temperature and Duration of Soaking Dormant Rice Seed on Germination and α-Amylase Expression
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- Itayagoshi Shigeto
- Niigata Agricultural Research Institute Crop Research Center
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- Iwatsu Masakazu
- Niigata Agricultural Research Institute Crop Research Center
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- Mizusawa Seiichi
- Niigata Agricultural Research Institute Research Planning and Information Division
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- Fukushima Rozan
- Niigata Prefecture Itoigawa Regional Development Bureau
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- Shibukawa Hiroshi
- NARO, Hokuriku Research Station
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- Mitsui Toshiaki
- Graduate School of Science and Technology, Niigata University
Bibliographic Information
- Other Title
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- 休眠を持つ水稲種子の発芽とα-アミラーゼの発現に及ぼす浸種条件の影響
- キュウミン オ モツ スイトウ シュシ ノ ハツガ ト a-アミラーゼ ノ ハツゲン ニ オヨボス シンシュ ジョウケン ノ エイキョウ
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Abstract
<p>The dormancy of rice (Oryza sativa L.) seed varied by cultivar and year, and seed preparation using the conventional method often resulted in uneven germination. Therefore, we investigated the appropriate soaking conditions for securing uniformly germinated seeds by altering the temperature and duration of the soaking period. At the soaking temperature of 10°C or 12°C, the germination rate was 90% or greater when the accumulated temperature was 120°C or more for “Koshihikari” and 80°C or more for “Koshiibuki; and, the longer the duration of soaking, the higher was the germination rate of the deeply dormant “Gohyakumangoku”. When the soaked seeds were germinated in nursery soil, the longer the duration of soaking before sown in nursery soil, the percentage of normally germinated seeds was higher, and the length of the shoots was longer. However, at a soaking temperature of 5°C, the germination rate was less than 90% for “Koshihikari” and “Koshiibuki” and 50% for “Gohyakumangoku” regardless of the duration of soaking. The expression of α-amylase for each isoform was examined by western blotting after soaking at different temperatures and durations. AmyII-4 expression was observed at both 12°C and 5°C, but the transition of the expression during soaking varied with water temperature.</p>
Journal
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- Japanese Journal of Crop Science
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Japanese Journal of Crop Science 90 (3), 269-276, 2021-07-05
CROP SCIENCE SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390007437192375040
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- NII Article ID
- 130008070979
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- NII Book ID
- AN00189888
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- ISSN
- 13490990
- 00111848
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- NDL BIB ID
- 031732688
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed