麻疯树和枫杨幼苗对5种模拟喀斯特逆境的光合生理响应
Photosynthetic physiological response of Jatropha carcas and Pterocarya stenoptera seedlings to five simulated karst adversities
查看参考文献33篇
|
文摘
|
通过测定麻疯树和枫杨幼苗在5种模拟喀斯特逆境下的光合以及δ~(13)C值的变化,分析其光合响应特征。结果表明,第15天,麻疯树幼苗在偏碱性、干旱、低磷、高重碳酸盐和低营养下的净光合速率(P_n)分别为4.39、0.27、2.58、3.08和6.26 μmol · m~(-2) · s~(-1),第25天则分别变为4.09、0.66、4.57、3.83和4.04 μmol · m~(-2) · s~(-1);枫杨幼苗的Pn和水分利用效率均低于麻疯树,枫杨幼苗在第25天的Pn有所升高。干旱下枫杨幼苗的初始荧光(F_o)显著升高,光系统II原初光能转化效率(F_v/F_m)显著下降,与麻疯树幼苗相比,其光合结构受到更为严重的损害。第25天各逆境下麻疯树幼苗的δ~(13)C值与对照相比显得更为偏正,其对胞内HCO_3~-的利用能力较强。因此,在山坡缺水环境适宜种植麻疯树,而在沿溪涧河滩阴湿环境则适宜种植枫杨。 |
|
其他语种文摘
|
The karst ecosystem is vulnerable and rocky desertification in karst regions develops rapidly. The situation of karst ecosystem becomes increasingly severe. In order to quickly build a stable forest ecosystem, it is better to select the appropriate plant species to carry out revegetation. Research on photosynthetic response traits can help to quickly identify plant adaptability to karst environment. In this study, 5 different karst adversities including high pH,high bicarbonate,drought,low phosphorus (P) and low nutrient were simulated, and Hoagland solution was taken as control. Jatropha carcas and Pterocarya stenoptera seedlings were cultivated with these treatment solutions synchronously. Photosynthetic response traits of these two plant species to 5 different simulated adversities were analyzed through determining the photosynthetic characteristics and variation of stable carbon isotopic compositions (δ~(13)C). On the 15~(th) day,the net photosynthetic rates (P_n) of J. carcas seedlings under alkalescent,drought,low P,high bicarbonate and low nutrient were 4.39,0.27,2.58,3.08,6.26 μmol · m~-(2) · s~(-1),respectively. On the 25~(th) day,the values became 4.09,0.66,4.57, 3.83,4.04 μmol · m~(-2) · s~(-1),respectively. P_n and water use efficiency (WUE) of P. stenoptera seedlings were all lower than J. carcas seedlings. P_n of P. stenoptera seedlings under alkalescent, low P,high bicarbonate and low nutrient excepted for drought condition all increased on the 25~(th) day compared to the values on the 15~(th) day. On 25 days from the onset of adversity treatment, WUE of J. carcas seedlings under drought stress increased significantly,and was higher than the value under other adversities. However, WUE of P. stenoptera seedlings under drought stress remained the lowest compared to the values of WUE under other adversities. Initial fluorescence (F_o) and primary conversion of light energy of PSII(F_v/F_m) values in J. carcas seedlings were independent of adversities,there was no significant change. But the value of F_o of P. stenoptera seedlings under drought stress increased significantly and F_v/F_m value decreased significantly, photosynthetic apparatus of P. stenoptera seedlings suffered more serious damage under drought stress than J. carcass seedlings. On the 25~(th) day,δ~(13)C values of J. carcas seedlings under those adversities were more positive compared to that under control,the intracellular bicarbonate use capacity of J. carcas seedlings was higher than P. stenoptera seedlings. The utilization of two different inorganic carbon resources in J. carcas seedlings enhanced its photosynthetic carbon fixation efficiency and growth potential, improved the adaptability of J. carcas seedlings to adversities. Meanwhile,higher WUE under drought stress conditions helped improve the inorganic carbon capture efficiency of J. carcas seedlings. And the damage of drought stress on photosynthetic apparatus of these two plant species was irreversible,but J. carcas seedlings exhibited better photosynthetic capacity under drought stress conditions compared to P. stenoptera seedlings. Therefore,in the water deficit hillside environments, it is better to plant J. carcas, whereas along the river streams dank environments,it is better to plant P. stenoptera. |
|
来源
|
中国岩溶
,2016,35(6):649-656 【扩展库】
|
|
DOI
|
10.11932/karst20160606
|
|
关键词
|
光合作用
;
叶绿素荧光
;
水分利用效率
;
稳定碳同位素组成
;
胁迫
|
|
地址
|
1.
江苏大学农业装备工程学院, 教育部现代农业装备与技术国家重点实验室, 江苏, 镇江, 212013
2.
中国科学院地球化学研究所, 环境地球化学国家重点实验室环境生物科技研究中心, 贵阳, 550002
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1001-4810 |
|
学科
|
林业 |
|
基金
|
国家自然科学基金青年基金
;
国家重点基础研究发展计划(973)项目专题
;
贵州省社会发展科技攻关项目
;
江苏大学引进人才科研启动基金
|
|
文献收藏号
|
CSCD:5910921
|
参考文献 共
33
共2页
|
|
1.
罗维均. 喀斯特洞穴系统碳循环的烟囱效应研究现状及展望.
地球科学进展,2014,29(12):1333-1340
|
被引
12
次
|
|
|
|
|
2.
苏维词. 贵州岩溶区生态环境脆弱性类型的初步划分.
环境科学研究,1994,7(6):35-41
|
被引
23
次
|
|
|
|
|
3.
王德炉. 喀斯特环境生态脆弱性数量评价.
南京林业大学学报(自然科学版),2015,29(6):23-26
|
被引
1
次
|
|
|
|
|
4.
Yuan D X. On the karst ecosystem.
Acta Geologica Sinica,2001,75(3):336-338
|
被引
42
次
|
|
|
|
|
5.
Liu C C. Plant drought tolerance as-sessment for re-vegetation in heterogeneous karst landscapes of southwestern China.
Flora-Morphology, Distribution, Functional Ecology of Plants,2012,207(1):30-38
|
被引
3
次
|
|
|
|
|
6.
曹建华. 中国西南岩溶生态系统特征与石漠化综合治理对策.
草业科学,2008,25(9):40-50
|
被引
48
次
|
|
|
|
|
7.
覃星铭. 南洞流域东部重点区石漠化现状及治理对策.
中国岩溶,2014,33(4):456-462
|
被引
11
次
|
|
|
|
|
8.
胡阳. 典型岩溶山区植被恢复对土壤团聚体分布及稳定性的影响.
水土保持通报,2015,35(1):61-67
|
被引
13
次
|
|
|
|
|
9.
吴沿友. 喀斯特适生植物固碳增汇策略.
中国岩溶,2011,30(4):461-465
|
被引
10
次
|
|
|
|
|
10.
Pandey V C. Jatropha curcas: A potential biofuel plant for sustainable environmental development.
Renewable and Sustainable Energy Reviews,2012,16(5):2870-2883
|
被引
11
次
|
|
|
|
|
11.
何文淑. 麻疯树在贫困地区农村发展和生态建设中的开发前景.
中国中医药信息杂志,2002,9(10):33-36
|
被引
20
次
|
|
|
|
|
12.
王琼. 能源植物麻疯树分子育种研究进展.
生物技术通报,2014(3):1-8
|
被引
2
次
|
|
|
|
|
13.
Li C X. Effects of submergence on photosynthesis and growth of Pterocarya stenoptera (Chinese wingnut) seedlings in the recently-created Three Gorges Reservoir region of China.
Wetlands Ecology and Management,2010,18(4):485-494
|
被引
11
次
|
|
|
|
|
14.
李纪元. 枫杨种源苗期生长及生物量地理变异研究.
林业科学研究,2001,14(1):60-66
|
被引
19
次
|
|
|
|
|
15.
吴沿友.
诸葛菜的喀斯特适生性研究,2004:1-153
|
被引
4
次
|
|
|
|
|
16.
Walters M B. Relative growth rate in relation to physiological and morphological traits for northern hardwood tree seedlings: species, light environment and ontogenetic considerations.
Oecologia,1993,96(2):219-231
|
被引
11
次
|
|
|
|
|
17.
Rohacek K. Technique of the modulated chlorophyll fluorescence: basic concepts, useful parameters, and some ap-plications.
Photosynthetica,1999,37(3):339-363
|
被引
44
次
|
|
|
|
|
18.
Panda D. Chlorophyll fluorescence parameters,CO_2 photosynthetic rate and regeneration capacity as a result of complete submergence and subsequent reemer-gence in rice (Oryza sativa L.).
Aquatic Botany,2008,88(2):127-133
|
被引
62
次
|
|
|
|
|
19.
池永宽. 喀斯特石漠化地区三种豆科牧草光合与蒸腾特性的研究.
中国草地学报,2014,36(4):116-120
|
被引
9
次
|
|
|
|
|
20.
张显强. 干旱和复水对喀斯特石生反叶扭口藓(Barbula fallax Hedw.)叶绿素荧光特性的影响———以贵阳市花溪区附近严重石漠化区域为例.
中国岩溶,2014,33(1):77-81
|
被引
9
次
|
|
|
|
|
了解气象卫星更多信息，请访问