蓖麻杂交种光合特性初步研究  

Comparative Studies on Photosynthetic Characteristics of Castor

作　　者：唐艳梅[1] 李凤山[1] 朱国立 乔文杰 张志勇 

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028042 [2]内蒙古通辽市农科院,内蒙古通辽028015

出　　处：《内蒙古民族大学学报（自然科学版）》2008年第1期59-61,共3页Journal of Inner Mongolia Minzu University：Natural Sciences

摘　　要：对大田栽培的347×2129、转1645×1987、27×2129、转4号×1987、转1号×2129、转2号×2129六个蓖麻材料光合特性进行了研究.结果表明:几种供试材料都不存在光合午休现象.蓖麻叶片净光合速率Pn与有效辐射强度PAR的日变化均呈单峰曲线.气孔导度从早上8:00就开始下降.材料347×2129、27×2129的净光合速率Pn显著高于其他6个品种.The photosynthesis characters of 6 castors were studied in contrast with Tongbi No. 5. The indexes including photosynthesis rate （ Pn ）, stomatal conductance（Cond）, photosynthetic active radiatio and intercellular CO2 concentration （Ci） were measured by L I- 6400 portable photosynthesis system in the open air. The result showed that the mid-day depression of photosynthesis is not existed in all the tested materials, and the changes during the day in net photosynthetic rate （Pn） and photosynthetic active radiatio（PAR）of 6 mature tree peony leaves was typical single peak curve, The change trend between Pn and PAR with stomatal conductance are very different. The stomatal conductance begin to decrease at 8 ： 00am. 347 × 2129 and 27 × 2129 are used as breeding material for future.

关 键 词：蓖麻 光合特性 光合速率 生态因子 

分 类 号：S565.6[农业科学—作物学]