云南农业大学学报(自然科学)
                首 页    期刊介绍        编 委 会        期刊订阅        下载中心        留言板        联系我们        English
云南农业大学学报(自然科学) 2017, Vol. 32 Issue (1) :57-62    DOI: 10.16211/j.issn.1004-390X(n).2017.01.008
耕作栽培·生理生化 最新目录 | 下期目录 | 过刊浏览 | 高级检索 << | >>
CO2加富与钾素水平对黄瓜光合特性和生物量的影响
何丽琼1, 海梅荣2, 达布希拉图1
1. 云南农业大学 资源与环境学院, 云南 昆明 650201;
2. 云南农业大学 农学与生物技术学院, 云南 昆明 650201
The Effects of Enriched CO2 and K Level on Cucumber Photosynthesis
HE Liqiong1, HAI Meirong2, DABUXILATU1
1. College of Resources and Environmental Science, Yunnan Agricultural University, Kunming 650201, China;
2. College of Agriculture and Biotechnology, Yunnan Agricultural University, Kunming 650201, China

摘要
参考文献
相关文章
Download: PDF (1044KB)   HTML 1KB   Export: BibTeX or EndNote (RIS)      Supporting Info
摘要 

本研究在开顶式气候室,研究了CO2加富和常规含量下(1 000和380 μmol/mol)以及不同钾素水平(150、300、600 mg/kg)下,黄瓜各生育期叶片的净光合速率、气孔导度、蒸腾速率等的变化及其相互关系。结果表明:(1)CO2加富短期内(1~24 d)极显著提高了黄瓜光合作用,而加富后期(27 d)所有钾素水平的黄瓜均出现了光合下调/适应现象,其中150 mg/kg和300 mg/kg钾素水平的黄瓜叶片光合速率较大;(2)过高钾素(600 mg/kg)会抑制苗期(加富2 d)黄瓜光合作用,CO2加富后期(27 d)则无显著影响,且增加钾素供应对缓解光合适应无影响;(3)CO2加富前期,黄瓜气孔导度、蒸腾速率显著降低,水分利用效率提高,后期常规钾素水平(150 mg/kg)黄瓜气孔导度、蒸腾速率有增加的趋势;加富前期光合速率与气孔导度呈显著正相关,后期则无显著相关关系;(4)CO2加富显著增加了黄瓜植株干重,高CO2含量条件下增加钾素水平可继续增加生物量,但在自然CO2含量下增加钾素水平黄瓜生物量则无显著变化。

Service
把本文推荐给朋友
加入我的书架
加入引用管理器
Email Alert
RSS
作者相关文章
何丽琼
海梅荣
达布希拉图
关键词CO2加富   钾素水平   黄瓜   光合适应     
Abstract

The study in open top chamber was conducted to explore the changes of cucumber leaf net photosythetic rate,stomatal conductance, transpiration rate and its relationship to each other under different CO2 concentrations (1 000 and 380 μmol/mol) and K levels (150,300,600 mg/kg). Results showed that:(1) Early CO2 enrichment(1 to 24 days) significantly increased the cucumber photosynthesis, later (27 days) a down-regulation occurred on all K levels, of which 150 mg/kg and 300 mg/kg K levels showed a slightly larger photosynthetic rate. (2) High K levels (600 mg/kg) could suppress photosynthesis in the seedling stage(2 days)of cucumber plants, this inhibitory effect was eliminated after 27 days treatment of enriched CO2,increasing K fertilizer found no signs that can alleviate photosynthetic adaptation on this study. (3) Early CO2 enrichment significantly reduced stomatal conductance, transpiration rate and promote water use efficiency, the late the two photosynthetic parametres of cucumber under general K level (150 mg/kg) increased. In early CO2 enrichment, photosynthetic rate was significantly positively related to stomatal conductance, whereas there was no significant correlation the late. (4) Enriched CO2 concentration increased the dry weight of cucumber plant, and its biomass increase with higher K levels, while cucumber biomass between different K levels grown under ambient CO2 concentration showed no significant difference.

Keywordsenriched CO2   K levels   cucumber   photosythetic acclimation     
Received 2016-03-02;
Fund:

国家自然科学基金项目(31360499)。

Corresponding Authors: 达布希拉图(1974-),男,内蒙古呼和浩特人,博士,副教授,主要从事植物逆境营养生理研究。E-mail:tutu3274@yahoo.com.cn     Email: tutu3274@yahoo.com.cn
About author: 何丽琼(1991-),女,云南石屏人,在读硕士研究生,主要从事植物营养生理研究。E-mail:980363074@qq.com
引用本文:   
何丽琼, 海梅荣, 达布希拉图.CO2加富与钾素水平对黄瓜光合特性和生物量的影响[J]  云南农业大学学报(自然科学), 2017,V32(1): 57-62
HE Liqiong, HAI Meirong, DABUXILATU.The Effects of Enriched CO2 and K Level on Cucumber Photosynthesis[J]  Journal of Yunnan Agricultural University, 2017,V32(1): 57-62
Copyright 2010 by 云南农业大学学报(自然科学)