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＜紀要論文＞
Physiological efficiency under different nitrogen nutrition conditions and relationship with photosynthetic N-use efficiency in Myanmar local rice varieties (Oryza sativa L.)

作成者
作成者名
Win, Khin Thanda
所属機関
所属機関名
Laboratory of Plant Breeding, Division of Bioresource and Bioenvironmental Sciences, Graduate School, Kyushu University
著者識別子
K001673
作成者名
Mochizuki, Toshihiro
望月, 俊宏
所属機関
所属機関名
Laboratory of Agricultural Ecology, Division of Agricultural Ecology, Department of Plant Resources, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院植物資源科学専攻農業生産生態学講座農業生産生態学分野
本文言語
英語
出版者
Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院
発行日
2010-02-26
収録物名
九州大学大学院農学研究院紀要
巻
55
号
1
開始ページ
61
終了ページ
66
出版タイプ
Version of Record
アクセス権
open access
Crossref DOI
https://doi.org/10.5109/17801
関連DOI
Journal of the Faculty of Agriculture, Kyushu University || 55(1) || p61-66
九州大学大学院農学研究院紀要 || 55(1) || p61-66
http://www.agr.kyushu-u.ac.jp/
関連URI
Journal of the Faculty of Agriculture, Kyushu University || 55(1) || p61-66
九州大学大学院農学研究院紀要 || 55(1) || p61-66
http://www.agr.kyushu-u.ac.jp/
関連情報
Journal of the Faculty of Agriculture, Kyushu University || 55(1) || p61-66
九州大学大学院農学研究院紀要 || 55(1) || p61-66
http://www.agr.kyushu-u.ac.jp/

本文ファイル

pdf 55_1_p61 pdf 143 KB 782  

詳細

PISSN
0023-6152
NCID
AA00697606
レコードID
17801
査読有無
査読無
ISSN
0023-6152
NCID
AA00697606
注記
Rice genotypes with improved N-use efficiency are becoming a prerequisite for optimizing grain yield, reducing production cost, and developing environmentally friendly cropping systems. The physiological efficiency of grain (PE-grain) and biomass (PE-biomass), photosynthetic N-use efficiency (PNUE), and in vivo carboxylation efficiency of Rubisco (Pn/Rubisco) under varying N nutrition conditions were investigated in two Myanmar varieties (Bawgyi and Sawbwa), an indica variety (IR24), and a japonica control variety (Nipponbare). Nipponbare and IR24 had significantly higher grain yield and PE-grain at both soil N and standard N supply, Bawgyi exhibited moderately high grain yield and PE-grain, and Sawbwa had a low grain yield and PE-grain at both N levels. Nipponbare and IR24 had significantly higher PE-biomass at all N levels; while Bawgyi had lower PE-biomass than Nipponbare and IR24 at all N levels, its PE-biomass was significantly higher than that of Sawbwa at the low N level. Net photosynthesis (Pn) of Bawgyi was not significantly different from that of Nipponbare and IR24, but was higher than that of Sawbwa, even with no significant difference in leaf N content. Nipponbare, IR24, and Bawgyi showed no significant difference in PNUE, but had significantly higher PNUE than Sawbwa, especially at low and standard N levels. There was no significant difference in Pn/Rubisco among Bawgyi, Nipponbare, and IR24, but Pn/Rubisco was significantly higher in these varieties than in Sawbwa at low and standard N levels. PE-biomass corresponded well to PE-grain and showed significant positive correlations with PNUE and Pn/Rubisco, indicating that rice genotypes with high physiological efficiency have high Pn with low leaf N and low Rubisco content with high Rubisco efficiency. These results suggest that, of the two Myanmar rice varieties, Bawgyi is the more desirable genotype, with considerably higher physiological efficiency and high photosynthetic activity through the highly efficient use of Rubisco.
登録日 2010.12.15
更新日 2022.11.11

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