黃豆的抗旱性評(píng)價(jià).rar
黃豆的抗旱性評(píng)價(jià),9頁(yè)8000余字,本文包含完整論文及答辯ppt摘要:人工盆栽試驗(yàn)條件下,通過(guò)對(duì)充分供水(80%fc)和土壤含水量自充分供水下逐漸降低過(guò)程中黃豆的光合生理、葉水勢(shì)、根冠生長(zhǎng)和膜透性等生理生化指標(biāo)的測(cè)定和比較,研究和尋求在土壤含水量逐漸下降過(guò)程中黃豆的的非水力信號(hào)與水力信號(hào)及黃豆的形態(tài)和生理生化反應(yīng)。結(jié)果表明,當(dāng)土壤含水量...
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9頁(yè)8000余字,本文包含完整論文及答辯ppt
摘 要:人工盆栽試驗(yàn)條件下,通過(guò)對(duì)充分供水(80%FC)和土壤含水量自充分供水下逐漸降低過(guò)程中黃豆的光合生理、葉水勢(shì)、根冠生長(zhǎng)和膜透性等生理生化指標(biāo)的測(cè)定和比較,研究和尋求在土壤含水量逐漸下降過(guò)程中黃豆的的非水力信號(hào)與水力信號(hào)及黃豆的形態(tài)和生理生化反應(yīng)。結(jié)果表明,當(dāng)土壤含水量下降至約9.8%時(shí),黃豆葉片氣孔導(dǎo)度與高水處理下相比出現(xiàn)顯著性差異,說(shuō)明此時(shí)黃豆的非水力信號(hào)出現(xiàn);當(dāng)土壤含水量下降至7.5%左右時(shí),高降處理黃豆葉片水勢(shì)與充分供水處理相比出現(xiàn)顯著性差異,說(shuō)明此時(shí)黃豆的水力信號(hào)出現(xiàn)。黃豆在出現(xiàn)非水力信號(hào)時(shí),葉片質(zhì)膜透性較充分供水有所增大,但二者沒(méi)有顯著差異。水分脅迫使黃豆的根冠比增加,水分利用效率提高。
關(guān)鍵詞:黃豆 非水力信號(hào) 水力信號(hào) 氣孔導(dǎo)度 葉水勢(shì)
Evaluation of Soybean (Glycine max) Drought Resistance Characteristics
Abstract: In this study, the photosynthetic characteristics, leaf water potential, root and shoot growth of soybean were compared under high water and drying from that, the objectives were to find the soil water threshold at which the non-hydraulic and hydraulic signals appeared. The results showed that when the soil moisture decreased to 9.8%, the stomatal conductance of the treated soybean was significantly different with that under high water, which showed the non-hydraulic signal appeared, when the soil water decreased to 7.5%, the leaf water potential was significantly different from the high water treats, thus the hydraulic signal appeared. Soil water stress made the soybean root/shoot ratio and WUE increase as compared to the high water treatments.
Key words: Soybean; Non-hydraulic signal; Hydraulic signal; Stomatal conductance; Leaf water potential
目錄
摘 要
Abstract:
1 材料與方法
1.1 實(shí)驗(yàn)材料
1.2 實(shí)驗(yàn)條件
1.3播種處理
1.4 苗期處理
1.5 水分處理
1.6 測(cè)定項(xiàng)目與方法
1.5.1葉片光合生理
1.5.2葉水勢(shì)
1.5.3 蒸騰耗水量與生物量根冠比
1.5.4水分利用效率的計(jì)算
1.5.5質(zhì)膜相對(duì)透性的測(cè)定及計(jì)算
2 結(jié)果與分析
2.1 土壤水分降低過(guò)程中黃豆葉片光合生理的變化
2.2水分脅迫下黃豆根冠生長(zhǎng)及水分利用效率
2.3土壤水分降低過(guò)程中黃豆葉片水勢(shì)的變化
2.4 與黑豆混播下黃豆光合生理特征
2.5 水分脅迫對(duì)黃豆光合生理的影響
3 討論與結(jié)論
參 考 文 獻(xiàn)
致 謝
參 考 文 獻(xiàn)
[1] 山侖,陳國(guó)良主編.黃土高原旱地農(nóng)業(yè)的理論與實(shí)踐.科學(xué)出版社.1993.
[2] 李鳳民,鄢珣,郭安紅,山侖.論麥類作物非水力根信號(hào)與生活史對(duì)策.生態(tài)學(xué)報(bào),2000,20(3):510-513.
[3] 楊文治,邵明安.黃土高原土壤水分研究.北京:科學(xué)出版社,2000:23-25.
[4] 張繼澍.植物生理學(xué).西安:世界圖書出版公司.1999:384-385.
[5] 高俊鳳,植物生理學(xué)實(shí)驗(yàn)技術(shù),西安世界圖書出版公司.1999
[6] 郭安紅,李鳳民,李召祥,龐斌雙,山侖表土干旱和根信號(hào)對(duì)春小麥產(chǎn)量形成的影響,應(yīng)用生態(tài)學(xué)報(bào),1999.12:689-695
摘 要:人工盆栽試驗(yàn)條件下,通過(guò)對(duì)充分供水(80%FC)和土壤含水量自充分供水下逐漸降低過(guò)程中黃豆的光合生理、葉水勢(shì)、根冠生長(zhǎng)和膜透性等生理生化指標(biāo)的測(cè)定和比較,研究和尋求在土壤含水量逐漸下降過(guò)程中黃豆的的非水力信號(hào)與水力信號(hào)及黃豆的形態(tài)和生理生化反應(yīng)。結(jié)果表明,當(dāng)土壤含水量下降至約9.8%時(shí),黃豆葉片氣孔導(dǎo)度與高水處理下相比出現(xiàn)顯著性差異,說(shuō)明此時(shí)黃豆的非水力信號(hào)出現(xiàn);當(dāng)土壤含水量下降至7.5%左右時(shí),高降處理黃豆葉片水勢(shì)與充分供水處理相比出現(xiàn)顯著性差異,說(shuō)明此時(shí)黃豆的水力信號(hào)出現(xiàn)。黃豆在出現(xiàn)非水力信號(hào)時(shí),葉片質(zhì)膜透性較充分供水有所增大,但二者沒(méi)有顯著差異。水分脅迫使黃豆的根冠比增加,水分利用效率提高。
關(guān)鍵詞:黃豆 非水力信號(hào) 水力信號(hào) 氣孔導(dǎo)度 葉水勢(shì)
Evaluation of Soybean (Glycine max) Drought Resistance Characteristics
Abstract: In this study, the photosynthetic characteristics, leaf water potential, root and shoot growth of soybean were compared under high water and drying from that, the objectives were to find the soil water threshold at which the non-hydraulic and hydraulic signals appeared. The results showed that when the soil moisture decreased to 9.8%, the stomatal conductance of the treated soybean was significantly different with that under high water, which showed the non-hydraulic signal appeared, when the soil water decreased to 7.5%, the leaf water potential was significantly different from the high water treats, thus the hydraulic signal appeared. Soil water stress made the soybean root/shoot ratio and WUE increase as compared to the high water treatments.
Key words: Soybean; Non-hydraulic signal; Hydraulic signal; Stomatal conductance; Leaf water potential
目錄
摘 要
Abstract:
1 材料與方法
1.1 實(shí)驗(yàn)材料
1.2 實(shí)驗(yàn)條件
1.3播種處理
1.4 苗期處理
1.5 水分處理
1.6 測(cè)定項(xiàng)目與方法
1.5.1葉片光合生理
1.5.2葉水勢(shì)
1.5.3 蒸騰耗水量與生物量根冠比
1.5.4水分利用效率的計(jì)算
1.5.5質(zhì)膜相對(duì)透性的測(cè)定及計(jì)算
2 結(jié)果與分析
2.1 土壤水分降低過(guò)程中黃豆葉片光合生理的變化
2.2水分脅迫下黃豆根冠生長(zhǎng)及水分利用效率
2.3土壤水分降低過(guò)程中黃豆葉片水勢(shì)的變化
2.4 與黑豆混播下黃豆光合生理特征
2.5 水分脅迫對(duì)黃豆光合生理的影響
3 討論與結(jié)論
參 考 文 獻(xiàn)
致 謝
參 考 文 獻(xiàn)
[1] 山侖,陳國(guó)良主編.黃土高原旱地農(nóng)業(yè)的理論與實(shí)踐.科學(xué)出版社.1993.
[2] 李鳳民,鄢珣,郭安紅,山侖.論麥類作物非水力根信號(hào)與生活史對(duì)策.生態(tài)學(xué)報(bào),2000,20(3):510-513.
[3] 楊文治,邵明安.黃土高原土壤水分研究.北京:科學(xué)出版社,2000:23-25.
[4] 張繼澍.植物生理學(xué).西安:世界圖書出版公司.1999:384-385.
[5] 高俊鳳,植物生理學(xué)實(shí)驗(yàn)技術(shù),西安世界圖書出版公司.1999
[6] 郭安紅,李鳳民,李召祥,龐斌雙,山侖表土干旱和根信號(hào)對(duì)春小麥產(chǎn)量形成的影響,應(yīng)用生態(tài)學(xué)報(bào),1999.12:689-695