4种砧木嫁接的红阳猕猴桃光合特性比较.pdf

南方农业学报 Joumal of Southern Agriculture2014,4(10):1825-1830
ISSN 2095-1191: CODEN NNXAAB
http://www.nfnyx.cn
DOI:10.39695:isa.2095-1191.,2014.10.1825
4种砧木嫁接的红阳猕猴桃光合特性比较
龚弘娟·2,叶开玉,蒋桥生,李洁维,薛进军
(中国科学院广西枝物研究所,广西桂林541006;2广西大学农学院,南宁53000
摘要!【日的}比较不同砧木嫁接的红阳猕猴桃光合特性,为筛选更适合红阳猴桃嫁接的砧木提供参考。【方法
用L-6400光合测定系统分别测定阔叶砧木(A. latifolia)、桂林砧木(A. guilinensis)、长果砧木(A. longicarpa)和中华
砧木(A. chinensis)嫁接的两年生红阳猕猴桃成熟片的光响应曲线和光合日变化特征,采用非直角双曲线方程拟合
光响应曲线及各光合参数。【结果]4种砧木嫁接的红阳熬猴桃最大净光合速率(Pnm)在176853~24.8340molm3*s
变化,表观量子率(AQY)为0.0465-0.0538,光饱和点(LSP)为4330494.79 umol/m2s,光补偿点(LCP)为33.19~61.79
umol/m2-s;长果砧木嫁接的红阳猕猴桃光合性能最好,其Pm、AQY和LSP均最高。红阳猕猴桃的净光合速率(Pn)日变
化曲线为双峰型,光合最高峰出现在上午9:30左右,在13:00~14:00,因高温和空气湿度下降引起气孔关闭,发生光合
午休'现象;长果砧木嫁接的红阳称猴桃净光合速率(Pm)、水分利用效率(WUE)、光能利用效率(LUE)和羧化效率
(CE)均最高。【结论从光合效率角度评价,选择长果砧木作为红阳猕猴桃的嫁接砧木效果较佳。
关键词:红阳猕猴桃;砧木;光合特性;光响应曲线;光合日变化
中日分类号:S663.4
文献标志码:A
文章编号:2095-1191(2014)10-182506
Photosynthetic characteristic comparison of Hongyang
kiwifruit grafted with four different rootstocks
GONG Hong-juan] 2, YE Kai-yu, JIANG Qiao-sheng, II Jie-weil, XUE,Jin-jun?
(Guangxi Institute of Botany, Chinese Academy of Sciences, Guilin, Guangxi 541006,China; Agricultural College
Guangxi University, Nanning 530005, China)
light response curve and diurnal variation of photosynthetic physiological parameters of tw 6 d with four different
f Objective )Photosynthetic cha
son of ' Hongyang ' kiv
grafts
rootstocks was conducted to provide references for selecting suitable rootstock for Hongyan
fruit. [ Method The
dd AC
wifruit grafted with four different rootstocks (Actinidia latifolia, A limensis, A. longicarpa and A chinensis were
100 portable photosynthesis
lar hyperbolic model was adopted to fit
light response curve. [ Result ]The results of light response curve measurement indi
aracteristics of Hongyang kiwifruit grafted with four rootstocks showed obvious vacations. The variations of maxi
mum net photosynthetic rate(P_), apparent photosynthetic quantum yield(AQY), light saturation point (SP)and
light compensation point (LCP were 17.6853-24.8340 wmol/m., 0.0465-0.0538 wmol/m., 433.60-494.79
umol/m? s and 33.19-61.79 wmolm's, respectively. The Pm, A(Y and LSP in Hongyang 'kiwifruit grated with
rootstock of Actinidi
ere all the highest. The results of diurnal variation of phe
showed that the diumal variation of net photosynthetic rate(Hn) in Hongyang kiwifruit was a double-peak model
and the first photosynthetic peaked at about 9: 30 a.m. The midday depression of photosynthesis appeared at 13: 00
and it was because of the stomatal closure caused by high temperature and the decrease of air humid
Pn, water use efficiency(WUE), light use efficiency(IUE)and carboxylation efficiency(CE )in Hongyang'ki.
wifrui graf ed w h rootstock of A. longcan were all the highest compared with those grafted with other three root
stocks. I Conclusion] Based on the perormances of photosynthetic characteristics, A. longicarpa may be the best for
Hongyang ' kiwifruit among the four rootstocks tested
Key words: Hongyang'kiwifrui; rootstock otos nthetic characteristics; P-PAR response curve; diural ari
ation of photosynthesis
0引言
抗性和适应性,还可以调节嫁接苗的生长势、成熟期、
研究意义]果树砧木不仅可以提高嫁接品种的产量和果实品质等(李小红等,2009)。光合作用是果
收稿日期:2014-06-1
基金项目:广西科学研究与技术开发计划项H(桂科攻