两个品种绿皮梨及其红色芽变品种光合生理特性的比较  

Comparison of Photosynthetic Physiological Characteristics of Two Varieties of Green Pears and Their Red Mutations Varieties

作　　者：董晓勤[1] 周鹏[1] 仇宗浩[1] 翟锐[1] 徐凌飞[1] 

机构地区：[1]西北农林科技大学园艺学院,农业部西北地区园艺作物生物学与种质创制重点实验室,陕西杨凌712100

出　　处：《北方园艺》2013年第20期1-5,共5页Northern Horticulture

基　　金：国家自然科学基金资助项目(31171925);高校基本科研业务费资助项目(ZD2013005)

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"。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 C02 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 ＇ exceeded that of ＇Zaosu＇pear and ＇Bartlett＇ respectively.

关 键 词：梨 红色芽变 光合作用 光合色素 花青苷 

分 类 号：S661.2[农业科学—果树学]