25個中大花型菊花品種的光合特性比較

食品科學論文編號:SP018 論文字數:10603,頁數:21

目        錄
1  前言 1
2  材料和方法 2
2.1  材料 2
2.2  方法 2
3  結果分析 2
3.1  25個品種主要光合特性的分析 2
3.1.1  凈光合速率（Pn）、蒸騰速率（Tr）及水分利用率(WUE)的分析 2
3.1.2  胞間CO2濃度（Ci）與凈光合速率（Pn）變化趨勢的比較 2
3.1.3  氣孔導度（Gs）的分析 6
3.1.4  氣孔相對濕度（RH-S）及胞間含水量（H2O-S）的比較 7
3.1.5　不同品種主要生理指標的相關關系 8
3.2  25個品種的聚類分析 9
3.3  25個品種光響應的比較 11
4  討論 12
參考文獻 14
英文摘要 15
致    謝 16
畢業論文成績評定表及答辯問題 17

摘 要
 采用便攜式Li－6400型光合作用測定儀，對25個中大型菊花品種進行了測定，綜合分析比較了光合特性差異。研究結果表明：25個中大型菊花品種之間的凈光合速率（Pn）、蒸騰速率（Tr）、胞間含水量（H2O-S）、氣孔相對濕度（RH-S）、氣孔導度（Gs）、 水分利用率(WUE)、胞間CO2濃度（Ci）都存在較大的差異。Pn與Ci存在著極顯著的負相關關系，但與Tr、H2O-S、RH-S、Gs等光合生理性狀相關性不大，Tr、H2O-S、RH-S、Gs之間存在著極顯著相關關系。在25個品種中，‘二月王’、‘八月王’、‘衛星’‘神馬’是高光合速率,高水分利用率的優良品種, 具有較高的生產種植潛力。
關鍵詞：菊花品種  光合特性  光響應

The Photosynthesis Differences among 25 Medium- and Large-Sized
Inflorescence Chrysanthemum Cultivars

tract:     The photosynthetic characteristics of 25 chrysanthemum varieties were measured in present paper by Li-6400 portable photosynthesis system. The photosynthesis differences were comprehensively analyzed and compared. The results indicated that, among 25 cultivars of chrysanthemum varieties, there were very obvious differences in photosynthesis speed (Pn), the transpiration speed (Tr), the water content (H2O-S), the blowhole relative humidity (RH-S), the blowhole leads (Gs), water use efficiency (WUE) and the CO2 density between the cells (Ci). The correlation between Pn and Ci was significantly negative. The correlation of Pn and Tr, Pn and H2O-S, Pn and RH-S, Pn and Gs were not significant. The correlations between Tr, H2O-S,RH-S, Gs were very significant. Among 25 cultivars, some  cultivars had high WUE and high Pn, such as ‘Eryuewang’, ‘Bayuewang’, ‘Weixing’ and ‘Shenma’. Their yield potential was excellent．
Key words: chrysanthemum; photosynthesis; photoresponse