华北农学报 ›› 2008, Vol. 23 ›› Issue (3): 100-105. doi: 10.7668/hbnxb.2008.03.025

• 论文 • 上一篇    下一篇

干旱对鸭茅光合特性及叶绿体超微结构的影响

王赞1, 李源2, 高洪文1, 刘贵波2, 柳斌辉2, 裴玉红3   

  1. 1. 中国农业科学院, 北京畜牧兽医研究所, 北京, 100094;
    2. 河北省农林科学院, 旱作农业研究所, 河北衡水053000;
    3. 内蒙古赤峰市翁牛特旗畜牧业服务中心, 内蒙古, 赤峰, 024500
  • 收稿日期:2008-02-15 出版日期:2008-06-28
  • 通讯作者: 高洪文(1957- ).男.山西吕梁人.研究员.博士.主要从事牧草种质资源研究。
  • 作者简介:王赞(1974-),男,内蒙古磴口,助研,博士,主要从事牧草种质资源及抗逆分子生物学研究.
  • 基金资助:
    国际科技合作计划项目资助(2003DFBA0001)

Effects of Drought on the Photosynthetic Characteristics and Chloroplast Ultrastructure of Dactylis glomerata L.

WANG Zan1, LI Yuan2, GAO Hong-wen1, LIU Gui-bo2, LIU Bin-hui2, PEI Yu-hong3   

  1. 1. Institute of Animal Science, Chinese Academy of Agriculture Science, Beijing 100094, China;
    2. Dryland Farming Institute of Hebei Academy of Agricultur and Forestry Sciences, Hengshui 053000, China
    3. Livestock Service Centre of Wengniute Qi in Chifeng City, Chifeng 024500, China
  • Received:2008-02-15 Published:2008-06-28

摘要: 室内盆栽控水条件下,对苗期4份鸭茅种质光合生理特性和叶绿体的超微结构进行了研究。结果表明,供试材料的净光合速率、蒸腾作用日变化均为"双峰"曲线,有明显的光合"午休"现象。随着水分胁迫程度的加强,4份鸭茅种质的净光合速率、蒸腾速率、气孔导度及叶绿素含量均有较大幅度的降低,供试材料ZXY04P-201下降的速度慢、幅度小,而ZXY04 P-239下降速度快、幅度大。电镜超微结构观察显示:叶绿体超微结构受损,片层数减少,基粒片层解体。同时研究表明,轻度水分胁迫下,气孔限制是4份鸭茅光合作用降低的主要因素,中度及重度胁迫下净光合速率降低主要是非气孔限制起着主要作用。

关键词: 鸭茅, 干旱, 光合特性, 超微结构

Abstract: The photosynthetic physiological characteristics of Dactylis glomerata L.were measured under water stress.And the results showed:the net photosynthetic rate and transpiration rate of all four Dactylis glomerata L.showed two peaks on the curves of diurnal changes,and all witnessed obvious phenomena in midday depression of the two afore-mentioned rate.With aggravation of water stress,the net photosynthetic rate,transpiration rate,stomatal conductance and chlorophyll decreased dramatically,compared with ZXY04P-239,the net photosynthetic rate,transpiration rate,stomatal conductance and chlorophyll in the leaves of ZXY04P-201 decreased slowly.Chloroplast lamellar structure disordered,and lamella number decreased.Meanwhile,the result also showed that,stomatal restriction was the main factor of the net photosynthetic rate′s decrease in the leaves of 4 Dactylis glomerata L.when stress in slight water stress and the non-stomatal restriction was the main factor of the net photosynthetic rate in the leaves of 4 Dactylis glomerata L.when stressed in medium water stress and serious water stress.

Key words: Dactylis glomerata L, Drounht, Photosynthetic characteristics, Ultrastructure

中图分类号: 

引用本文

王赞, 李源, 高洪文, 刘贵波, 柳斌辉, 裴玉红. 干旱对鸭茅光合特性及叶绿体超微结构的影响[J]. 华北农学报, 2008, 23(3): 100-105. doi: 10.7668/hbnxb.2008.03.025.

WANG Zan, LI Yuan, GAO Hong-wen, LIU Gui-bo, LIU Bin-hui, PEI Yu-hong. Effects of Drought on the Photosynthetic Characteristics and Chloroplast Ultrastructure of Dactylis glomerata L.[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(3): 100-105. doi: 10.7668/hbnxb.2008.03.025.

使用本文

0
    /   /   推荐 /   导出引用

链接本文: http://www.hbnxb.net/CN/10.7668/hbnxb.2008.03.025

               http://www.hbnxb.net/CN/Y2008/V23/I3/100