本文選題：觀賞竹 + 凈光合速率　； 參考：《中南林業(yè)科技大學》2015年碩士論文

【摘要】：竹是重要的園林綠化植物,種類繁多,用途廣泛。近年來,觀賞竹的生態(tài)和環(huán)境景觀功能日益受到人們的重視,市場前景十分廣闊。為探究其在自然狀態(tài)下的光合日變化和年變化規(guī)律和適合其生長的最適宜光照,本研究以4個3年生觀賞竹(‘白紋陰陽竹’、‘鼓節(jié)竹’、‘花稈早竹’和‘美麗箬竹’)為試驗材料,以1年為試驗時間,運用美國Li-COR公司生產(chǎn)的L1-6400便攜式光合作用測定系統(tǒng),測定了凈光合速率(Pn)、胞間C02濃度(Ci)、氣孔導度(Gs)、蒸騰速率(Tr)、光合有效輻射(PAR)、葉面溫度(Tleaf)與空氣相對濕度(RH)等指標,同時測定了4個品種的凈光合速率對光和C02的響應、葉片大小、氮含量以及及葉綠素含量。分析了凈光合速率、氣孔導度、胞間C02濃度、蒸騰速率、水分利用率、空氣相對濕度、空氣溫度、光合有效輻射的日變化,凈光合速率的年變化以及凈光合速率和生理生態(tài)因子之間的相關(guān)關(guān)系。結(jié)果表明：4個觀賞竹在一年中不同月份凈光合速率日變化為單峰型和雙峰型。白紋陰陽竹全年為單峰型,鼓節(jié)竹、花稈早竹和美麗箬竹在7月和8月為雙峰型,存在光合午休現(xiàn)象,其他月份為單峰型。4個觀賞竹凈光合速率年變化趨勢為先降低后上升,之后急劇上升,7月、8月和9月份達到峰值,之后下降。4個觀賞竹的光補償點為5.84-29.47μmo1·m-2-s-1,光飽和點為1143.28-2644.061μmo1-m-2·s"1,表觀量子效率為0.047-0.087。4個品種的光飽和點均比較高,具有陽生植物的特點。4個觀賞竹的C02補償點為51.11-88.23μmo1·m-2·s-1,C02飽和點為1118.20-1784.26μmo1·m-2.s-1,梭化效率為0.016-0.055。不同的品種對C02的利用效率是不同的,其中鼓節(jié)竹C02飽和點最高,利用C02的范圍最寬,花稈早竹C02補償點最低,進行光合作用的起點低,其竣化效率也最低,對低濃度的C02利用率最大。影響觀賞竹生理因子主要有胞間C02濃度、氣孔導度、蒸騰速率,生態(tài)因子主要有光合有效輻射和葉面溫度等。4個觀賞竹葉片的形態(tài)和生理指標均存在顯著性差異。美麗箬竹葉片長寬型,白紋陰陽竹和鼓節(jié)竹葉片為細長型,花稈早竹的葉片最小。4個觀賞竹的葉片葉綠素含量和氮含量間也存在顯著性差異,葉綠素最高的是鼓節(jié)竹,最低的是花稈早竹,氮含量最高為美麗箬竹,最低位花稈早竹,4個觀賞竹的葉綠素含量與凈光合速率均呈顯著正相關(guān)。
[Abstract]:Bamboo is an important landscaping plant, a wide range of uses. In recent years, people pay more and more attention to the ecological and environmental landscape function of ornamental bamboo, and the market prospect is very broad. In order to study the diurnal and annual variation of photosynthesis and the optimum light for its growth, four 3-year-old ornamental bamboos ('white grain yin-yang bamboo') were used in this study. The L1-6400 portable photosynthesis measurement system, which was produced by Li-COR Company, was used as the experimental material and 1 year as the test time, using the L1-6400 portable photosynthesis measurement system produced by Li-COR Company, USA. Net photosynthetic rate (PN), intercellular CO2 concentration (ci), stomatal conductance (Gs), transpiration rate (Tr), photosynthetic effective radiation (par), leaf surface temperature (Tleaf) and air relative humidity (RH) were measured. Nitrogen content and chlorophyll content. The diurnal changes of net photosynthetic rate, stomatal conductance, intercellular CO2 concentration, transpiration rate, water use efficiency, air relative humidity, air temperature and photosynthetic available radiation were analyzed. The annual variation of net photosynthetic rate and the correlation between net photosynthetic rate and physiological and ecological factors. The results showed that the diurnal variation of net photosynthetic rate of four ornamental bamboo in different months of the year was single-peak and bimodal. Yin-yang bamboo is a single peak type in the whole year, and bimodal type in July and August, and the net photosynthetic rate of four ornamental bamboo decreased first and then increased. The light compensation points of the four ornamental bamboo varieties were 5.84-29.47 渭 mo1 m-2-s-1, the light saturation point was 1143.28-2644.061 渭 mo1-m-2 "s", and the apparent quantum efficiency was 0.047-0.087.4. The CO2 compensation point of the four ornamental bamboo was 51.11-88.23 渭 mo1 m-2 s-1C02 saturation point was 1118.20-1784.26 渭 mo1 m-2.s-1, and the shuttling efficiency was 0.016-0.055. The utilization efficiency of CO2 was different among different varieties, in which the saturation point of C02 was the highest, the range of using CO2 was the widest, the compensation point of C02 was the lowest, the starting point of photosynthesis was low, and the efficiency of photosynthesis was also the lowest. The utilization rate of CO2 was the highest at low concentration. The main physiological factors affecting ornamental bamboo were C02 concentration, stomatal conductance, transpiration rate, ecological factors such as photosynthetic effective radiation and leaf surface temperature, etc. There were significant differences in morphological and physiological indexes among the four ornamental bamboo leaves. The leaf length and width type of Indocalamus amurensis, the slender leaves of Yin-yang bamboo with white grain and the leaf of phyllostachys japonica were the smallest, the chlorophyll content and nitrogen content of four ornamental bamboo leaves were also significantly different, and the highest chlorophyll content was phyllostachlorophyllum. The lowest is early flowering bamboo, the highest nitrogen content is Indocalamus amurensis, the lowest flower stalk is early bamboo, and the chlorophyll content of four ornamental bamboo has significant positive correlation with the net photosynthetic rate.
【學位授予單位】：中南林業(yè)科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：S795

【參考文獻】

相關(guān)期刊論文 前10條

1 楊學軍;武菊英;滕文軍;袁小環(huán);;青綠苔草光合作用日變化及季節(jié)動態(tài)[J];草業(yè)科學;2014年01期

2 甄曉輝;沈唯軍;張小娟;徐金剛;張啟軍;呂川根;陳國祥;高志萍;;水稻白條紋突變體6001劍葉光合功能衰老特性研究[J];中國水稻科學;2014年01期

3 余利;黃少勇;張智俊;管雨;;13種觀賞竹EST-SSR標記遺傳多樣性分析[J];經(jīng)濟林研究;2012年03期

4 徐彩龍;尹燕枰;蔡瑞國;王平;李勇;郭俊祥;陳二影;翟學旭;劉鐵寧;王振林;;弱光條件下不同穗型小麥品種旗葉光合特性和抗氧化代謝[J];作物學報;2012年07期

5 莊明浩;李迎春;郭子武;楊清平;顧李儉;陳雙林;;美麗箬竹對模擬大氣O_3濃度倍增脅迫的生理響應[J];植物資源與環(huán)境學報;2012年02期

6 郭春蘭;張露;;油茶光合特性研究進展[J];林業(yè)科技開發(fā);2012年01期

7 曾余力;王旭鋒;林新春;桂仁意;張翠萍;黃麗春;;白紋陰陽竹試管快繁技術(shù)研究[J];西南林學院學報;2010年03期

8 臧潤國;劉華;張新平;丁易;江曉珩;郭仲軍;張煒銀;;天山中部天然林分中不同齡級天山云杉光合特性[J];林業(yè)科學;2009年05期

9 眭曉蕾;毛勝利;王立浩;李偉;張寶璽;張振賢;;辣椒幼苗葉片解剖特征及光合特性對弱光的響應[J];園藝學報;2009年02期

10 莊文化;吳普特;馮浩;徐福利;李百鳳;寧榮昌;;土壤中施用聚丙烯酸鈉保水劑對冬小麥生長及產(chǎn)量影響[J];農(nóng)業(yè)工程學報;2008年05期

相關(guān)碩士學位論文 前1條

1 宋麗萍;環(huán)境因子對刺五加幼苗光合特性和生長的影響[D];東北林業(yè)大學;2007年

，

本文編號：2097427