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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 45号
  1. 部局別インデックス
  2. 農学部

葉面飽差の違いがサトウキビの光合成特性に及ぼす影響

http://hdl.handle.net/20.500.12000/3678
http://hdl.handle.net/20.500.12000/3678
fc4ad60d-474e-4f0b-b632-11e557cf8b61
名前 / ファイル ライセンス アクション
KJ00000161848.pdf KJ00000161848.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 葉面飽差の違いがサトウキビの光合成特性に及ぼす影響
言語 ja
タイトル
タイトル CO_2 Assimilation Rate at Different Vapor Pressure Difference in Sugarcane
言語 en
作成者 比屋根, 真一

× 比屋根, 真一

ja 比屋根, 真一

Search repository
川満, 芳信

× 川満, 芳信

ja 川満, 芳信

Search repository
村山, 盛一

× 村山, 盛一

ja 村山, 盛一

Search repository
Hiyane, Shinichi

× Hiyane, Shinichi

en Hiyane, Shinichi

Search repository
Kawamitsu, Yoshinobu

× Kawamitsu, Yoshinobu

en Kawamitsu, Yoshinobu

Search repository
Murayama, Seiichi

× Murayama, Seiichi

en Murayama, Seiichi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
主題
言語 ja
主題Scheme Other
主題 気孔伝導度
主題
言語 ja
主題Scheme Other
主題 光合成速度
主題
言語 ja
主題Scheme Other
主題 サトウキビ
主題
言語 ja
主題Scheme Other
主題 水ポテンシャル
主題
言語 ja
主題Scheme Other
主題 部分的気孔閉鎖
主題
言語 ja
主題Scheme Other
主題 葉面飽差
主題
言語 en
主題Scheme Other
主題 CO_2 assimilation rate
主題
言語 en
主題Scheme Other
主題 Patchy
主題
言語 en
主題Scheme Other
主題 Stomatal conductance
主題
言語 en
主題Scheme Other
主題 Sugarcane
主題
言語 en
主題Scheme Other
主題 Vapor pressure difference
主題
言語 en
主題Scheme Other
主題 Water potential
内容記述
内容記述タイプ Other
内容記述 Saccharum officinarumのBadilaと栽培品種であるS.spp.のNiF8を用いて, 葉面飽差の違いがサトウキビの光合成特性に及ぼす影響について検討した。葉面飽差の上昇に対し, 両種共に光合成速度の低下は認められず, 蒸散速度は両種共に直線的に上昇した。気孔伝導度においては葉面飽差の上昇に伴いNiF8では直線的に, Badilaでは25mb付近まで直線的に低下し, その後, 定常値に達した。葉内CO_2濃度は, 葉面飽差の上昇にともない直線的に低下し, 両種間に差はなかった。次に, 葉面飽差が葉内要因に与える影響を検討するため, 異なる葉面飽差下でCi-光合成曲線とその初期勾配である炭素固定効率, および光-光合成曲線の初期勾配である光利用効率を求め検討した。その結果, 高葉面飽差下で炭素固定効率, 光利用効率は低下した。しかし, これらは統計的に有意な差とは言えなかった。葉面飽差が葉の水ポテンシャル, 浸透ポテンシャル及び圧ポテンシャルに与える影響を検討したところ, 葉面飽差が大きく変化したにも関わらず, 各ポテンシャルは変化せず, その値はそれぞれ-0.23,-0.87,0.64MPaであった。
内容記述
内容記述タイプ Other
内容記述 This paper described that the effects of leaf-to-air vapor pressure difference (VPD) on photosynthesis, transpiration, leaf conductance and leaf water potential in Saccharum species (S. ssp. cv. NiF8 and S. officinarum cv. Badila), C_4 plants have been well-known a having strong resistance to VPD as compared with C_3 plants. In addition, we determined the carboxylation efficiency, obtained from the initial slope of the A/Ci curve, and apparent quantum yield, acquired from the initial slope of photosynthetic light response curve at different VPD conditions. The results indicated that there were no changes in photosynthesis and leaf water potential in sugarcane used with increasing VPDs. Transpiration rate was increased linearly with increasing VPD. Leaf conductance and internal CO_2 concentration were decreased with increasing VPD. The carboxylation efficiency and apparent quantum yield were decreased at high VPD, suggesting that photosynthetic activities were damaged at the high evaporation demands. However, there was no statistic significance between VPD treatments. Leaf water potential, osmotic potential and pressure potential were not altered at different VPD. It was suggested that the decreases in leaf conductance at high VPD were attributed to the direct responses of stomata to VPD.
内容記述
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3678
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
収録物名
言語 en
収録物名 The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus
書誌情報
号 45, p. 1-7
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