《植物生理学报》 2015, 51(4): 523-527

不同砧木对‘黄果柑’叶片光合作用关键酶和果实品质的影响

廖玲¹, 曾海琼¹, 曹淑燕¹, 古咸杰¹, 李清南¹, 高婧斐¹, 张婷婷¹, 石冬冬¹, 熊博¹, 汪志辉^1,2,*

四川农业大学¹园艺学院, ²果蔬研究所, 成都611130

通信作者：汪志辉；E-mail: wangzhihui318@126.com；Tel: 0835-2882730

摘　要：

本文研究了以枳壳、红橘、香橙为砧木的‘黄果柑’嫁接树叶片净光合速率(Pn)、核酮糖-1,5-二磷酸羧化酶/加氧酶(Rubisco)和活化酶(RCA)浓度及果实动态品质的变化规律。结果表明: ‘黄果柑’ Pn日变化呈双峰曲线, 3种嫁接树峰值的出现时间及大小不同, 以香橙和枳壳为砧木的‘黄果柑’叶片Pn较高; 嫁接树叶片中2种酶浓度均显著高于对照; 与对照相比, 3种嫁接树的总可溶性固形物(TSS)峰值出现时间有不同程度推迟, 果实留树保鲜时间延长。由此可见, 3种砧木中香橙对‘黄果柑’果实品质的影响最大。

关键词：‘黄果柑’; Rubisco; RCA; 果实品质

收稿：2014-12-09   修定：2015-03-18

资助：四川省科技支撑计划项目(2011NZ0034)、四川省科技厅基金项目(10ZC1454)。

Effects of Different Rootstocks on Key Photosynthetic Enzyme in Leaves and Fruit Quality of Citrus cv. ‘Huangguogan’

LIAO Ling¹, ZENG Hai-Qiong¹, CAO Shu-Yan¹, GU Xian-Jie¹, LI Qing-Nan¹, GAO Jing-Fei¹, ZHANG Ting-Ting¹, SHI Dong-Dong¹, XIONG Bo¹, WANG Zhi-Hui^1,2,*

¹College of Horticulture, ²Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China

Corresponding author: WANG Zhi-Hui; E-mail: wangzhihui318@126.com; Tel: 0835-2882730

Abstract:

This study investigated the variation patterns in the leaf net photosynthetic rate (Pn), leaf concentrations of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and Rubisco activase (RCA), and quality dynamics of fruits in Citrus cv. ‘Huangguogan’ trees grafted using Poncirus trifoliate, Citrus reticulata and C. junos rootstocks. The results showed that diurnal variations of leaf Pn in ‘Huangguogan’ exhibited bimodal curves. Peak Pn values were obtained at different times with different magnitudes in the three types of grafted trees. Trees grafted on C. junos and P. trifoliate rootstocks showed higher leaf Pn values. Leaf concentrations of the two photosynthetic enzymes in grafted trees were significantly higher than those in the control trees. Compared with control trees, in grafted trees, the peak values of total soluble solids (TSS) were postponed to different degrees, thereby prolonging the preservation time of the fruits of the trees. Therefore, out of the three rootstocks, C. junos has the most profound effect on the fruit quality of ‘Huangguogan’.

Key words: ‘Huangguogan’; Rubisco; RCA; fruit quality