時間:2018-11-14
作者:易科泰
點擊量:
簡介:
LCpro T 全自動便攜式光合儀
LCpro-T 便攜式光合儀為新一代智能型便攜式光合作用測定儀,,用以測量植物葉片的光合速率、蒸騰速率,、氣孔導度等與植物光合作用相關的參數(shù),。儀器應用時間差分IRGA(紅外氣體分析)CO2分析模塊和雙激光調諧快速響應水蒸氣傳感器精密測量葉片表面CO2濃度及水分的變化情況來考察葉片與植物光合作用相關的參數(shù),。通過人工光源,、CO2控制單元和溫度控制單元可以同時精確調控環(huán)境條件,,從而測定光強,、CO2濃度和溫度對植物光合系統(tǒng)的影響,。本儀器可在高濕度、多塵等惡劣環(huán)境中使用,,具有廣泛的適用性,。
上圖左為全套光合儀主機配件及便攜箱等,上圖中為光合儀主機和手柄,,上圖右為操作人員進行野外實驗
l 植物光合生理研究
l 植物抗脅迫研究
l 碳源碳匯研究
l 植物對全球氣候變化的相應及其機理
l 作物新品種篩選
l 配備手持式葉綠素熒光儀,,內置了所有通用葉綠素熒光分析實驗程序,包括兩套熒光淬滅分析程序,、3套光響應曲線程序,、OJIP-test等
l 彩色LCD觸摸屏,,屏幕和控制單元均采用膜封技術,可在高濕和多塵環(huán)境下使用
l 白光和RGB(Red Gree Blue)光源任選其一
l 內置GPS模塊,,精確獲取經緯度及海拔數(shù)據(jù)
l 完全自動,、獨立控制環(huán)境參數(shù)(空氣濕度,CO2濃度,,溫度,,光照強度)
l 精確測量CO2和水汽數(shù)據(jù)
l 便攜式設計,體積輕小,,僅重4.1Kg
l 人體工程學設計,,舒適型肩帶,攜帶操作簡便
l 手柄內置微型IRGA,,有效縮短CO2測量時間
l 可在惡劣環(huán)境下操作,,堅固耐用
l 可方便互換不同種類的葉室、葉夾
l 葉室材料精心選擇,,確保CO2及水分測量精度
l 數(shù)據(jù)存儲量大,,使用即插即拔SD卡
l 維護方便,葉室所有區(qū)域都很容易清潔
l 采用低能耗技術,,野外單電池持續(xù)工作時間長,,可達16小時
l 實時圖形顯示功能
上圖為英國劍橋大學植物科學系M. Davey博士在南極洲對藻類光合作用研究時的工作圖片,因LC系列光合儀輕便小巧,,堅固耐用,,續(xù)航持久等特點被列為首選。
l 測量參數(shù):光合速率,、蒸騰速率,、胞間CO2濃度、氣孔導度,、葉片溫度,、葉室溫度、光合有效輻射,、氣壓、GPS數(shù)據(jù)等,,可進行光響應曲線和CO2響應曲線測量,。
l 手持葉綠素熒光儀(選配)
1. 測量參數(shù)包括F0、Ft,、Fm,、Fm’、QY_Ln,、QY_Dn,、NPQ,、Qp、Rfd,、RAR,、Area、M0,、Sm,、PI、ABS/RC等50多個葉綠素熒光參數(shù),,及3種給光程序的光響應曲線,、2種熒光淬滅曲線、OJIP曲線等
2. 高時間分辨率,,可達10萬次每秒,,自動繪出OJIP曲線并給出26個OJIP-test測量參數(shù)包括F0、Fj,、Fi,、Fm、Fv,、Vj,、Vi、Fm/F0,、Fv/F0,、Fv/Fm、M0,、Area,、Fix Area、Sm,、Ss,、N、Phi_P0,、Psi_0,、Phi_E0、Phi-D0,、Phi_Pav,、PI_Abs、ABS/RC,、TR0/RC,、ET0/RC、DI0/RC等
l CO2測量范圍:0-3000ppm
l CO2測量分辨率:1ppm
l CO2采用紅外分析,,差分開路測量系統(tǒng),,自動置零,,自動氣壓和溫度補償
l H2O測量范圍:0-75mbar
l H2O測量分辨率:0.1mbar
l PAR測量范圍:0-3000 μmol m-2 s-1,余弦校正
l 葉室溫度:-5 - 50℃ 精度:±0.2℃
l 葉片溫度:-5 - 50℃
l 空氣泵流速:100 - 500ml / min
l CO2控制:由內部CO2供應系統(tǒng)提供,,最高達2000ppm
l H2O控制:可高于或低于環(huán)境條件
l 溫度控制:由微型peltier元件控制,,環(huán)境溫度-10℃到+15℃,所有葉室自動調節(jié)
l PAR控制:RGB光源最大2400μmol m-2 s-1,,LED白色光源最大2500μmol m-2 s-1
l 可選配多種帶有光源的可控溫葉室,、葉夾
1. 寬葉葉室:長×寬為2.5×2.5cm,適用于闊葉及大多數(shù)葉片類型
2. 窄葉葉室:長×寬為5.8×1cm,,適用寬度小于1cm的條形葉
3. 針葉葉室:長約69mm,,直徑47mm,適用于簇狀針葉(白光光源)
4. 小型葉葉室:葉室直徑為16.5mm,,測量面積2.16cm2
5. 土壤呼吸/小型植物室:測量測量土壤呼吸,,或者高度低于55mm的整株草本植物光合作用,底面直徑為11cm
6. 多功能測量室:長×寬×高為15×15×7cm,,分為上下兩部分,,上部測量小型植物光合作用,下部分測量土壤呼吸
7. 果實測量室:上下兩部分組成,,上部透明,,下部為金屬,可測量果實最大直徑為11cm,,最大高度為10.5cm
8. 冠層測量室:底面直徑12.7cm,,高12.2cm,適用于地表冠層
9. 熒光儀聯(lián)用適配器:適用于連接多種葉綠素熒光儀
上圖從左到右依次為寬葉室,、窄葉室,、LED光源、熒光儀聯(lián)用葉室,、小型葉室
上圖從左到右依次為針葉室,、果實測量室、土壤呼吸室,、多功能測量室,、冠層室
l 顯示:彩色WQVGA LCD觸摸屏,480 x 272像素,,尺寸95 x 53.9 mm,,對角線長109mm
l 數(shù)據(jù)存儲:SD卡,最大兼容32G容量
l 數(shù)據(jù)輸出:Mini-B型USB接口,,RS232九針D型接口,最大230400波特率PC通訊
l 供電系統(tǒng):內置12V 7.5AH鋰離子電池,,可持續(xù)工作至16小時,,智能充電器
l 尺寸:主機230×110×170mm,,測量手柄300×80×75mm
l 重量:主機4.1Kg,測量手柄0.8Kg
l 操作環(huán)境:5到45℃
Glyphosate reduces shoot concentrations of mineral nutrients in glyphosate-resistant soybeans, Zobiole L. et al. 2010, Plant and Soil, 328(1): 57-69
本研究對不同類型的抗草甘膦大豆進行草甘膦處理,,發(fā)現(xiàn)大豆的各項光合參數(shù),,包括葉綠素含量、氣孔導度,、光合速率和蒸騰速率都有所降低,。
Methanol as a signal triggering isoprenoid emissions and photosynthetic performance in Quercus ilex, Seco R. et al. 2011, Acta Physiologiae Plantarum, 33(6): 2413-2422
上圖左為本研究設計的氣室裝置,用以研究常青櫟(Quercus ilex)在剪去部分葉片(模擬啃食)和加入甲醇(模擬附近其他植物被啃食時釋放的信號)時的生理變化,,上圖右表明兩種處理都提高了植物的凈光合速率,。
英國
1) 與葉綠素熒光儀組成光合作用與葉綠素熒光測量系統(tǒng)
2) 與FluorCam聯(lián)用組成光合作用與葉綠素熒光成像測量系統(tǒng)
3) 可選配高光譜成像實現(xiàn)從單葉片到復合冠層的光合作用時空變化研究
4) 可選配O2測量單元
5) 可選配紅外熱成像單元以分析氣孔導度動態(tài)
6) 可選配PSI智能LED光源
7) 可選配FluorPen、SpectraPen,、PlantPen等手持式植物(葉片)測量儀器,,全面分析植物葉片生理生態(tài)
8) 可選配ECODRONE?無人機平臺搭載高光譜和紅外熱成像傳感器進行時空格局調查研究
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