摘要
以杜鹃红山茶和3个山茶栽培品种("帕克斯先生"、"孔雀椿"和"贝拉大玫瑰")5年生地栽嫁接苗为试验材料,分别测定它们光合日变化特性曲线。结果表明:供试的4种山茶Pn和Tr日变化均为单峰曲线,且Pn的峰值主要出现在午前,Tr的峰值则在不同山茶间存在差异;4种山茶中,杜鹃红山茶的日均WUE最高;Pn、Tr与各生理生态因子间的相关性分析说明Gs对光合特征参数的变化影响最大,且对Pn起决定性作用,是影响光合作用的限制因子;PARi与杜鹃红山茶和"贝拉大玫瑰"的Pn成显著正相关。从理论上解释了杜鹃红山茶是一种适应能力极强的山茶原种。
The experimental materials were the 5 years old grafted plants of Camellia azalea and 3 camellia cultivars（＂Dr.Clifford Parks＂,＂Hakuhan Kujaku＂ and ＂Niuccio′s Bella Rossa＂） which were growing in the ground.Their characteristics of photosynthesis diurnal variations were tested respectively.The results showed that： Diurnal variation of Pn（net photosynthetic rates） and Tr（transpiration rates） were single-peak curve,the peak of Pn mainly occurred before noon,and the peak of Tr were different among the camellias tested,the daily average of WUE of C.azalea was the highest in the 4 camellias,the correlations among the Pn,Tr and the factors on physiology and ecology showed that Gs was maximal to the influence on the change of photosynthetic characteristic parameters and had a major role to the Pn.So,Gs was a limited factor to photosynthesis.PARi was a positively correlative significantly to Pn of C.azalea and ＂Niuccio′s Bella Rossa＂.Through the research,C.azalea had been proved as a highly adaptable camellia species on theory.
出处
《广东林业科技》
2011年第1期17-22,共6页
Forestry Science and Technology of Guangdong Province
关键词
杜鹃红山茶
光合日变化
光合特征参数
Camellia azalea
diurnal variation
photosynthetic characteristic parameters
