欢迎访问《中国农学通报》,

中国农学通报 ›› 2016, Vol. 32 ›› Issue (1): 17-21.doi: 10.11924/j.issn.1000-6850.casb15060058

• 林学 园艺 园林 • 上一篇    下一篇

红椿半同胞家系苗期光合特性研究

陈明皋,程勇,盛杰,黄明军,刘球,黄小飞,李艳,吴际友   

  1. 中国林科院湖南分院,中国林科院湖南分院,中南林业科技大学,中国林科院湖南分院,中国林科院湖南分院,中国林科院湖南分院,中南林业科技大学,中国林科院湖南分院
  • 收稿日期:2015-06-09 修回日期:2015-09-29 接受日期:2015-10-16 出版日期:2016-01-28 发布日期:2016-01-28
  • 通讯作者: 黄明军
  • 基金资助:
    湖南省林业科技计划项目“闽楠、红椿家具材良种选育与应用”(XLK201406)。

Photosynthetic Characteristics of Seedling Toona ciliata from Different Half-sib Families

  • Received:2015-06-09 Revised:2015-09-29 Accepted:2015-10-16 Online:2016-01-28 Published:2016-01-28

摘要: 针对红椿半同胞家系苗期光合特性研究,为红椿家系选择与栽培提供理论依据。以红椿6个半同胞家系2年生幼苗为试验材料,研究家系间光合特性,研究结果表明,红椿半同胞家系净光合速率、蒸腾速率日变化呈“双峰”曲线,存在“午休”现象,日平均净光合速率均值为3.49μmol/﹙㎡.s﹚,蒸腾速率为2.44μmol/﹙㎡.s﹚水分利用效率为1.43μmol/﹙㎡.s﹚,光饱和点均值为1165μmol/﹙㎡.s﹚,光补偿点为42μmol/﹙㎡.s﹚,CO2饱和点为1897μmol/mol,补偿点为104.5μmol/mol。综合各参数分析,红椿为阳生喜光树种,对CO2利用的范围较广,本试验家系中1号家系表现最佳。

关键词: 大豆, 大豆, 纯度鉴定, 分子ID, 遗传多样性

Abstract: The study on the photosynthetic characteristics of seedling Toona ciliata from different half-sib families aims to provide a theoretical basis for the selection and cultivation of Toona ciliata families. Taking Toona ciliata from 6 half- sib families of 2- year- old seedlings as test materials, the authors studied the photosynthetic characteristics among the families. The results showed that the diurnal variation of photosynthetic rate and transpiration rate presented double peak curves and had the‘midday depression’ phenomenon. The mean value of the daily average net photosynthetic rate was 3.49 μmol/(m2·s), transpiration rate was 2.44 μmol/(m2·s), water use efficiency was 1.43 μmol/(m2·s), light saturation point was 1165 μmol/(m2·s) and light compensation point was 42 μmol/(m2 ·s), CO2 saturation point was 1897 μmol/mol, CO2 compensation point was 104.5 μmol/mol. Comprehensive parameter analysis showed that Toona ciliata was an intolerant tree species, the CO2 utilization range was wide, and No. 1 family was the best among the 6 half-sib families.

中图分类号: