[1]黄东兵,彭莉霞.菊芋光响应曲线最佳模型选择及其环境适应性[J].黑龙江农业科学,2018,(03):41-45.[doi:10.11942/j.issn1002-2767.2018.03.0041]
　HUANG Dong-bing,PENG Li-xia.Photosynthetic Light Response Characteristics of Helianthus tuberosus L.and Fitting of Application Model[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(03):41-45.[doi:10.11942/j.issn1002-2767.2018.03.0041]
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菊芋光响应曲线最佳模型选择及其环境适应性

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2018年03期 页码: 41-45 栏目: 出版日期: 2018-03-10
Title:
Photosynthetic Light Response Characteristics of Helianthus tuberosus L.and Fitting of Application Model
作者:
黄东兵; 彭莉霞
广东生态工程职业学院，广东 广州 510520
Author(s):
HUANG Dong-bing; PENG Li-xia
Guangdong Eco-engineering Polytechnic,Guangzhou 510520，China
关键词:
菊芋; 改进指数模型; 光合参数; 草地; 林下
Keywords:
Helianthus tuberosus L.;  modified exponential model;  photosynthetic parameters; grassland;  forest undergrowth
DOI:
10.11942/j.issn1002-2767.2018.03.0041
文献标志码:
A
摘要:
为揭示菊芋的光合特性，以草地、林下两种不同生长环境的菊芋（Helianthus tuberosus L.）为研究对象，利用便携式光合仪LI-6400进行光响应曲线的测量，并选取最佳拟合模型，计算并对比两种环境条件下的光合参数，深入分析菊芋生理生长特性与生长环境间的关系。结果表明：改进指数模型为菊芋的光响应曲线最佳拟合模型，拟合所得R2为0.999，光饱和点(Isat)为1 600 μmol?m-2?s-1、光补偿点(Ic)为37.637 μmol?m-2?s-1、最大净光合速率(Pmax)为27.256 μmol?m-2?s-1、暗呼吸速率(Rd)为-2.218 μmol?m-2?s-1，初始量子效率(φ)为0.059；菊芋为阳生植物，耐高温耐干旱；因此菊芋应种植在高温干燥的生境中，草地更适宜于菊芋的生存。
Abstract:
In order to reveal the photosynthetic characteristics of Helianthus tuberosus L.,the Helianthus tuberosus L.of two different growth environments in woodland and grassland was used as the research object,using portable photosynthetic instrument LI-6400 (LI-COR Inc.,Lincoln,USA) measure light response curve,and select the best fitting model,calculate and compare the photosynthetic parameters under two kinds of environmental conditions ,the relationship between the physiological growth characteristics and the growth environment was analyzed.The results showed that the modified exponential model was the best fitting model for the response curve of Helianthus tuberosus L.,the fitted R2 was 0.999,the light saturation point was 1 600 μmol?m-2?s-1,the maximum net photosynthetic rate of 27.256 μmol?m-2?s-1,light compensation point of 37.637 μmol?m-2?s-1,dark respiratory rate of -2.218 μmol?m-2?s-1,initial quantum efficiency of 0.059; photosynthesis ability stronger,artichoke grows well under grassland habitats; Helianthus tuberosus L.is a heliophytes be planted in the hot and dry habitats,the grassland is more suitable for the survival of Helianthus tuberosus L..

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备注/Memo

收稿日期：2017-12-05基金项目：校级研究与发展计划资助项目(2015kykt-xj-jb02)。第一作者简介：黄东兵（1968-），男，学士，副教授，从事园林设计及园林植物应用研究。E-mail：1057964927@qq.com。责任作者：彭莉霞（1980-），女，硕士，副教授，从事园林植物应用研究。E-mail：20186598@qq.com。

更新日期/Last Update: 2018-05-08