| 干旱胁迫对文心兰生长及光合特性的影响 |
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| 引用本文： | 尤 毅,孙映波,吕复兵,朱根发,操君喜.干旱胁迫对文心兰生长及光合特性的影响[J].热带作物学报,2011,32(7):1245-1248. |
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| 作者姓名： | 尤 毅 孙映波 吕复兵 朱根发 操君喜 |
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| 作者单位： | 广东省农业科学院花卉研究所 广东省园林花卉种质创新综合利用重点实验室 广东广州510640 |
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| 基金项目： | 广州市农业科技项目(No.GZCQC0902FG06017); 广东省现代农业产业技术体系建设专项 |
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| 摘 要： | 以盆栽文心兰切花品种‘黄金2号’幼苗及成熟苗为研究材料,研究持续2个月的半干旱和干旱胁迫对其生长及光合生理特征的影响。结果表明,文心兰幼苗及成熟苗在干旱胁迫下,生物量积累减少,根冠比增大,叶绿素含量下降,净光合速率、气孔导度及蒸腾速率下降,植株生长势削弱。同时,研究发现,半干旱胁迫下,文心兰幼苗的反应不及成熟苗敏感。
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| 关 键 词： | 文心兰 干旱 光合生理 |
Growth and Photosynthetic Characteristics of Oncidium
Seedlings under Drought Stress |
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| YOU Yi,SUN Yingbo,LV Fubing,ZHU Genfa and CAO Junxi.Growth and Photosynthetic Characteristics of Oncidium
Seedlings under Drought Stress[J].Chinese Journal of Tropical Crops,2011,32(7):1245-1248. |
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| Authors: | YOU Yi SUN Yingbo LV Fubing ZHU Genfa and CAO Junxi |
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| Institution: | YOU Yi,SUN Yingbo,LV Fubing,ZHU Genfa,CAO Junxi Floricultural Research Institute,Guangdong Academy of Agricultural Sciences,Guangdong Key Lab of Ornamental Plant Germplasm Innovation and Utilization,Guangzhou,Guangdong 510640,China |
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| Abstract: | Small and big oncidium seedlings were used to study the effects of semiarid and drought stress for two months on their growth and physiological index.The results showed that the small and big seedlings reduced their dry matter accumulation,chlorophyll content,net photosynthetic rate,stomata conductance and transpiration rate,but increased the root/shoot ratio together with the decreasing of substrates moisture.Meanwhile under semiarid treatment(substrates moisture under 50%),small seedlings was more sensiti... |
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| Keywords: | Oncidium Drought stress Photosynthetic Characteristics |
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