Research on Photosynthetic Characteristics and Fruit Quality of? High Light Use Efficiency Tree Shape on Laiyang Pear.Research on Photosynthetic Characteristics and Fruit Quality of High Light Use Efficiency Tree Shape on ‘Laiyang Pear’[J].Northern Horticulture,2018,42(12):58-62.[doi:10.11937/bfyy.20180114]
‘莱阳茌梨’高光效树形光合特性与果实品质的研究
- Title:
- Research on Photosynthetic Characteristics and Fruit Quality of High Light Use Efficiency Tree Shape on ‘Laiyang Pear’
- 文献标志码:
- A
- 摘要:
- ：以6年生‘莱阳茌梨’为试材，采用棚架形和主干疏散分层形2种不同树形，测定了‘莱阳茌梨’净光合速率（Pn）、气孔导度（Gs）、胞间二氧化碳浓度（Ci）、蒸腾速率（Tr）、叶绿素含量以及果实品质，比较分析了2种不同树形下‘莱阳茌梨’叶片的光合特性以及果实品质的差异，从而筛选并确定了经济效益较高的适宜树形。结果表明：在相同的光照条件下，棚架形Pn、Gs、Tr由外到内逐渐降低，Ci增加；主干疏散分层形Pn、Gs、Tr由外到内、自上而下逐渐减小，且差异显著，Ci增加。综合比较2种树形的单果质量、果实硬度、可溶性固形物含量、可滴定酸含量、固酸比和糖酸比可知，棚架形树冠不同部位果实品质一致性优于主干疏散分层形。
- Abstract:
- 6-year-old ‘Laiyang pear’ trees were used as matetials,the net photosynthetic rate（Pn）,stomatal conductance（Gs），transpiration rate（Tr）,intercellular CO2 concentration（Ci）,SPAD and fruit quality were measured between the horizontal tree system（HTS）and the delayed open central system（DLS）in order to determine the suitable tree shape for ‘Laiyang pear’ tree.The results showed that under the same lighting conditions,Pn,Gs,Tr on HTS gradually decreased from the outside to the inside,Ci increased;Pn,Gs，Tr on DLS gradually decreased from the outside to the inside,from top to bottom with significant difference,Ci increased.Compared HTS with DLS on single fruit weight，fruit firmness，contents of total souble solid，soluble sugar,titrable acid，TSS-acid ratio and sugar-acid ratio，consistency of fruit quality in different position of HTS was better than that of DLS.
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备注/Memo
第一作者简介：牟红梅（1986-），女，山东烟台人，硕士，农艺师，现主要从事梨生理与育种等研究工作。E-mail:woxinqiji@163.com.责任作者：李元军（1964-），男，山东烟台人，研究员，现主要从事果树生理栽培与育种等研究工作。E-mail：liyuanjun5536@126.com.基金项目：国家现代梨产业技术体系建设专项资助项目（CARS-29-32）；山东省重点研发资助项目（2016GNC111024）。收稿日期：2018-02-23