Effect of Two Allelochemicals of Casuarina equisetifolia L. on Chlorophyll Fluorescence Parameters in Hydroponically Cultured Seedling: Effect of Two Allelochemicals of Casuarina equisetifolia L. on Chlorophyll Fluorescence Parameters in Hydroponically Cultured Seedling

Q4 Agricultural and Biological Sciences

应用与环境生物学报 Pub Date : 2013-12-13 DOI:10.3724/SP.J.1145.2013.00781

Jian Li, Yi Liu, Cheng-zhen Wu, T. Hong, Yongming Lin, Han Lin, Can Chen, W. Hong

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引用次数: 2

Abstract

In order to investigate the resistance of Casuarina equisetifolia L. to autotoxicity and to provide scientific basis for continuous planting of C. equisetifolia, clones of ‘Huian No.1’ C. equisetifolia were water cultivated to study the effects of chlorophyll fluorescence in branchlet under allelochemical stress (of seven concentrations: 0, 12.5, 25, 50, 100, 200 and 400 mg L) induced by quercetin-3-α-araboside (allelochemical A) and quercetin-3-β-glucoside (allelochemical B). The membership function of fuzzy mathematics was used to analyze the tolerance abilities of C. equisetifolia seedling under different allelochemicals stress. The results showed slight variations in F0, Fm, Fv/F0 and Fv/Fm of the branchlet under slight allelochemicals stress (12.5, 25, 50 mg L). The Fv/Fm was observed to maintain 78% of normal photosynthesis reaction. The F0, qN, Drate, LPAR of the branchlet significantly (P < 0.05) increased with the concentration of allelochemicals(100, 200, 400 mg L), while the values of Fm, Fv/Fm, Fv/F0, Prate, ΦPSII, qP decreased significantly (P < 0.05). Allelochemicals stress damaged the function of PSII reaction center and decreased the photochemical electron transfer rate, which led to the structural damage of photosynthetic organs and functional degradation in photosynthetic ability. The range of chlorophyll fluorescence parameters in branchlet of C. equisetifolia varied with different allelochemicals,the seedlings had better stress tolerance against allelochemical A than allelochemical B. Fig 3, Tab 1, Ref 28

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木麻黄两种化感物质对水培苗叶绿素荧光参数的影响:木麻黄两种化感物质对水培苗叶绿素荧光参数的影响

为了研究木麻黄对自身毒性的抗性，为木麻黄的连作提供科学依据，对“惠安1号”木麻黄无性系进行了水培，研究了7种浓度的化感化学胁迫对木麻黄小枝叶绿素荧光的影响:0、12.5、25、50、100、200和400 mg L槲皮素-3-α-糖苷(化感物质A)和槲皮素-3-β-葡萄糖苷(化感物质B)诱导下的耐药能力。采用模糊隶属函数分析了不同化感物质胁迫下的马叶松幼苗的耐药能力。结果表明，在12.5、25、50 mg L的化感物质胁迫下，小枝的F0、Fm、Fv/F0和Fv/Fm变化不大，Fv/Fm维持正常光合反应的78%。化感物质浓度分别为100、200、400 mg L时，小枝F0、qN、Drate、LPAR显著升高(P < 0.05)， Fm、Fv/Fm、Fv/F0、Prate、ΦPSII、qP显著降低(P < 0.05)。化感物质胁迫破坏了PSII反应中心的功能，降低了光化学电子传递速率，导致光合器官的结构损伤和光合能力的功能退化。不同化感物质对马叶松小枝叶绿素荧光参数的影响范围不同，幼苗对化感物质A的耐受性优于化感物质b。图3，表1，参考文献28

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来源期刊

应用与环境生物学报 Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

1.20

自引率

0.00%

发文量

4458

期刊介绍： The “Chinese Journal of Applied and Environmental Biology” is a national scientific and technological journal published both at home and abroad. It was started in 1995 and became bimonthly in 1999, and now it is a core journal for applied and environmental biology in China. It aims to introduce and exchange the new achievements, new technologies, new methods and new progresses made from the research fields of biology and its related disciplines both in China and abroad; enhance scientific and technological research serving for the development and construction of national economy, and improvement of people’s living standards.