Effects of elevated CO2 concentration on growth and photo-physiological characteristics of Cymbidium
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摘要: 研究了提高CO2浓度对大花蕙兰植株生长和光合生理特性的影响。结果表明:提高CO2浓度会促进大花蕙兰植株的生长发育,增加株高、叶宽和叶长;对花芽的生长具有明显的促进作用,但是并没有明显的提高植株的开花率;会使大花蕙兰的始花期提早,但对花期的长短并没有明显的影响;导致了叶片气孔导度(SC)和蒸腾速率(TR)的下降,净光合速度的提高。Abstract: Growth and physiological implications on Cymbidium plant under the increased CO2 concentration were studied.The results show that the increased CO2 promoted plant growth and development.Increased CO2 significantly promoted the growth of flower buds,but not the flowering rate.CO2 concentration made the flowering start early,but no significant effect on the length of flowering period.Elevated CO2 also resulted in reduced stomatal conductance(SC) and transpiration rates(TR),as well as,an increased net photosynthetic rate.
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Key words:
- Cymbidium /
- CO2 concentration /
- photo-physiology
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