DONG Xiao-qin,ZHOU Peng,QIU Zong-hao,et al.Comparison of Photosynthetic Physiological Characteristics of Two Varieties of Green Pears and Their Red Mutations Varieties[J].Northern Horticulture,2013,37(20):1-5.
两个品种绿皮梨及其红色芽变品种光合生理特性的比较
- Title:
- Comparison of Photosynthetic Physiological Characteristics of Two Varieties of Green Pears and Their Red Mutations Varieties
- 文章编号:
- 1001-0009(2013)20-0001-05
- Keywords:
- pear; red mutation; photosynthesis; pigment; anthocyanin
- 分类号:
- S 661.2
- 文献标志码:
- A
- 摘要:
- 以“早酥”梨、“巴梨”与其红色芽变“红早酥”梨、“红巴梨”为试材，在田间条件下，比较研究了4个梨品种功能叶片的光合生理特性的差异和叶片色素含量的变化。结果表明：4个梨品种净光合速率（Pn）日变化曲线呈单峰型，且日变化平均值大小依次为：“早酥”梨＞“红早酥”梨＞“红巴梨”＞“巴梨”；4个梨品种蒸腾速率（Tr）日变化曲线呈单峰型；“早酥”与“红早酥”梨气孔导度(Gs)日变化曲线呈双峰型，“巴梨”与“红巴梨”为单峰型；“早酥”与“红早酥”梨胞间CO2浓度 (Ci)日变化曲线呈双谷型，“巴梨”与“红巴梨”为单谷型；瞬时水分利用效率（WUE）和光能利用效率（LUE）日变化曲线均呈单谷型。红色芽变的“红早酥”梨与“红巴梨”叶片中叶绿素、花色素苷含量均显著高于其对应的“早酥”梨与“巴梨”。
- Abstract:
- Taking ‘Zaosu’ pear，‘Bartlett’ pear，and red mutation ‘Hongzaosu’pear，‘Red Bartlett’ pear as materials，photosynthetic characteristics and the pigment content in the leaves of four varieties of pear were measured.The results showed that the diurnal variation of net photosynthetic rate presented single-apex curves，and the order was ‘Zaosu’ pear＞‘Hongzaosu’ pear＞‘Red Bartlett’＞‘Bartlett’according to the amount of average diurnal variation of net photosynthetic rate.The diurnal variation of these pears’ transpiration rate (Tr) all presented single-apex curves.The diurnal variation of stomatal conductance (Gs) of ‘Zaosu’ and ‘Hongzaosu’ presented double-apex curves and the others presented single-apex curves.The diurnal variation of intercellular CO2 concentration (Ci) of ‘Zaosu’ and ‘Hongzaosu’ presented double-valley curves and the others presented single-valley curves．The diurnal variation of these four varieties of pears’ instantaneous water use efficiency(WUE) and light use efficiency(LUE) all presented single-valley curves.The content of chlorophyll and anthocyanin in the leaves of ‘Hongzaosu’ pear and ‘Red Bartlett’ of red mutation significantly exceeded that of ‘Zaosu’pear and ‘Bartlett’respectively.
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备注/Memo
第一作者简介：董晓勤（1987-），女，硕士研究生，研究方向为园艺植物种质资源与生物技术改良。E-mail:554129681@qq.com.