|本期目录/Table of Contents|

[1]侯扶江,李广,贲桂英.增强的UV-B辐射对黄瓜(Cucumis sativus)不同叶位叶片生长、光合作用和呼吸作用的影响[J].应用与环境生物学报,2001,7(04):321-326.
 HOU Fujiang,et al..Effects of enhanced ultravioletB radiation on growth, photosynthesis and respiration of Cucumis sativus leaves on different positions[J].Chinese Journal of Applied & Environmental Biology,2001,7(04):321-326.
点击复制

增强的UV-B辐射对黄瓜(Cucumis sativus)不同叶位叶片生长、光合作用和呼吸作用的影响()
分享到:

《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
7卷
期数:
2001年04期
页码:
321-326
栏目:
综述
出版日期:
2001-08-25

文章信息/Info

Title:
Effects of enhanced ultravioletB radiation on growth, photosynthesis and respiration of Cucumis sativus leaves on different positions
作者:
侯扶江李广贲桂英
Author(s):
HOU Fujianget al.
(Gansu Grassland Ecological Research Institute, Lanzhou730020, China) (1 Gansu Agricultu Gansu Agricultural University, Lanzhou730070, China) (2Northwest Plateau Institute of biology, Chinese Academy of Sciences, Xining810001, China)
关键词:
关键词 UVB辐射 黄瓜 光合作用 呼吸作用 生长
Keywords:
Keywords ultraviolet-B radiation Cucumis sativus photosynthesis respiration growth
摘要:
摘要 在植物生长室中,黄瓜植株第1片真叶出现后,用人工UVB光源照射60 d,测定植物各叶位叶片的生长和生理活动.结果表明,UVB辐射条件下,植物出叶时间被延迟;叶面积和叶干重下降,降幅与叶位高低正相关;叶片含水量降低,老龄叶片(第1叶,下位叶)和幼龄叶片(第5叶,上位叶)的水分降幅均高于成年叶片(第3叶,中位叶);叶片的伸展速度、叶片数目以及单叶面积减少,致使黄瓜总叶面积下降;植株节间长度缩短,是植株矮化的重要原因;根、茎、叶等器官之间的相关生长变化不大,叶片生长在其中起重要的协调作用. UVB降低Pn和EAQE,对光合作用的抑制程度随叶位升高而增加.UVB辐射后,黄瓜叶片的光呼吸显著提高,增幅与叶片发育阶段有关.UVB对黄瓜第1叶的暗呼吸没有影响,第2、3叶略微下降,第4叶显著升高.分析认为,植株矮化和叶面积减少有利于植物适应UVB辐射;水分含量和光合作用减少、呼吸作用增强是黄瓜生长受抑制的生理基础. 图2 表2 参18
Abstract:
Abstract The growth and physiological variation of cucumber grown under UVB radiation for 60 d in plant growth chamber were monitored. The results showed that the leaf emergence was delayed, the reduced magnitudes of leaf area and dry weight were positively correlative to leaf position. The reduced magnitude of water content in leaf, varying like a parabola line, was higher in both the oldest leaf (the first leaf in low position) and young leaf (the fifth leaf in high position), and was the lowest in the third leaf (leaf in middle position) because of UVB radiation. Decrease in leaf extension rate, leaf number and area per leaf together resulted in the reduce of total leaf area. Variation of leaf growth played an important role in the relatively stable correlative growth among root, stem and leaf under the condition of enhanced UVB radiation. The decrease in the internode length lead to the reduce of plant height. The inhabited degree of net photosynthetic rate and apparent quantum efficiency by UVB radiation were positively correlative to leaf position. The photorespiration was significantly enhanced by UVB radiation and the increment was not obviously in relation to leaf position. UVB radiation had no effect on the dark respiration of the first leaf, slightly decreased the respiration of the second and third leaf, but sharply raised the dark respiration of the fourth leaf. It was suggested that the reduce of both plant height and leaf area was advantageous for plant to adapt to UVB radiation, decrease in the water content and photosynthesis and increase in photorespiration and dark respiration may be the physiological bases of growth inhibition. Fig 2, Tab 2, Ref 18

相似文献/References:

[1]艾希珍,张振贤,何启伟,等.日光温室主要生态因子变化规律及其对黄瓜光合作用的影响[J].应用与环境生物学报,2002,8(01):41.
 AI Xizhen,et al..Changes in ecological factors and their effects on photosynthesis of cucumber leaves (Cucumis sativus L.) in heliogreenhouse[J].Chinese Journal of Applied & Environmental Biology,2002,8(04):41.
[2]赵广琦,王勋陵,张利权.增强UV-B辐射和CO2倍增的交互作用对蚕豆幼苗的保护酶活性及脂质过氧化作用的影响[J].应用与环境生物学报,2005,11(03):296.
 ZHAO Guangqi,et al..Mutual effects of enhanced UVB irradiation and doubling CO2 on activities of cell defense enzymes and lipid peroxidation in broad bean seedlings[J].Chinese Journal of Applied & Environmental Biology,2005,11(04):296.
[3]彭霞薇,赵哀梅,白志辉,等.果胶酶激发子对黄瓜叶片病程相关蛋白及细胞壁物质的影响[J].应用与环境生物学报,2006,12(03):325.
 PENG Xiawei,et al..Effect of Treatment with Pectinases Extract on PathogenesisRelated Proteins and Cell Wall Substances in Cucumber Leaves[J].Chinese Journal of Applied & Environmental Biology,2006,12(04):325.
[4]彭霞薇,谢响明,白志辉,等.草酸青霉BZH-2002果胶酶系的纯化及其诱导抗病作用[J].应用与环境生物学报,2006,12(06):750.
 PENG Xiawei,et al..Purification and Induced Resistance of Pectinases from Penicillium oxalicum BZH-2002[J].Chinese Journal of Applied & Environmental Biology,2006,12(04):750.
[5]胡晓辉,郭世荣,李璟,等.低氧胁迫下钙调素拮抗剂对黄瓜幼苗根系多胺含量和呼吸代谢的影响[J].应用与环境生物学报,2007,13(04):475.
 HU Xiaohui,et al..Effects of Calmodulin Antagonist on Polyamine Content and Respiratory Metabolism in Cucumber Seedling Roots under Hypoxia Stress[J].Chinese Journal of Applied & Environmental Biology,2007,13(04):475.

更新日期/Last Update: 2002-10-31