摘要
研究了小黄花茶（ＣａｍｅｌｌｉａｌｕｔｅｏｆｌｏｒａＹ．Ｋ．Ｌｉ）、美丽红山茶（Ｃ．ｄｅｌｉｃａｔａＹ．Ｋ．Ｌｉ），威宁短柱油茶（Ｃ．ｓａｌｅｎｅｎｓｉｓＳｔａｐｆｅｘＢｅａｕ．）、狭叶瘤果茶（Ｃ．ｎｅｒｉｉｆｏｌｉａＣｈａｎｇ）和四球茶（Ｃ．ｔａｃｈａｎｇｅｎｓｉｓＦ．Ｓ．Ｚｈａｎｌｇ）贵州山茶属五种野生植物的光合生理，均为Ｃ３植物，其ＣＯ２补偿点在６０μＬ／Ｌ左右，光呼吸速率与总光合的比值为２５％左右，光补偿点８００～２５００ｌｘ，光饱和点１６００～４１０００ｌｘ。其中小黄花茶的光补偿点及光饱和点最低，威宁短柱油茶的光补偿点及光饱和点最高；净光合速率（Ｐｎ）６．００～１５．００ＣＯ２ｍｇ／（ｄｍ２·ｈ），光呼吸速率（Ｐｒ）２．００～５．００ＣＯ２ｍｇ／（ｄｍ２·ｈ），其中威宁短柱油茶的Ｐｎ及Ｐｒ均较高，四球茶的Ｐｎ及Ｐｒ均较低；Ｄｒ（暗呼吸速率）０．７０～２．６０ＣＯ２ｍｇ／（ｄｍ２·ｈ），其中威宁短柱油茶的Ｄｒ较高，小黄花茶的Ｄｒ较低。Ｐｎ、Ｐｒ及Ｄｒ相互间呈正相关；Ｃｈｌ．（ａ＋ｂ）（叶绿素）含量７．６０～１２．５０ｍｇ／ｄｍ２，其中小黄花茶的含量较高，威宁短柱油茶的含量较低。
Some photosynthetic properties of five wild species of Camellia (C.luteoflora, C. delicata, C. sulenensis, C. neriiflora and C. tachangensis) in Guizhou werestudied. All the five plants are C3 plants. The CO2 compensation point is about 60μL / L,the photorespiration rate is 25% of the gross photosynthetic rate, the light compensationpoint is 800～25001x, and the light saturation point is 1600～410001x. Among the fiveplants, the light compensation and saturation point of C. luteoflora is the lowest and C.sulenensis is the highest. The net photosynthetic rate is 6.00～15.00 CO2 mg / (dm2. h).The photorespiration is 2.00～5.00 CO2mg / (dm2·h). The total chlorophyll content of C.luteoflora is higher than that of C. Sulenensis.
出处
《园艺学报》
CAS
CSCD
北大核心
1994年第4期366-370,共5页
Acta Horticulturae Sinica
基金
贵州省科学技术基金
关键词
山茶属
野生植物
光合特性
贵州
Guizhou wild Camellia plant
Photosynthetic physiology
