[1]郭卫珍,张亚利,莫健彬,等. 茶花新品种‘玫玉’耐盐性初探[J].西北林学院学报,2014,29(04):74-79.[doi:doi:10.3969/j.issn.1001-7461.2014.04.13]
　GUO Wei-zhen,ZHANG Ya-li,MO Jian-bin,et al.Primary Research on Salt Tolerance of Camellia japonica Cultivar ‘Sweet Gem’[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2014,29(04):74-79.[doi:doi:10.3969/j.issn.1001-7461.2014.04.13]
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 茶花新品种‘玫玉’耐盐性初探()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第29卷
期数:
2014年04期
页码:
74-79
栏目:
出版日期:
2014-07-30

文章信息/Info

Title:
Primary Research on Salt Tolerance of Camellia japonica Cultivar ‘Sweet Gem’
文章编号:
1001-7461(2014)04-0074-06
作者:
 郭卫珍1; 张亚利2; 莫健彬2; 叶康2; 胡禾丰1; 刘燕1*
 （1.北京林业大学 园林学院，北京 100083；2.上海城市植物资源开发应用工程技术研究中心，上海 200231）
Author(s):
GUO Wei-zhen1; ZHANG Ya-li2; MO Jian-bin2; YE Kang2;  HU He-feng1; LIU Yan1*
（1. College of Landscape Architecture, Beijing Forestry University, Beijing 100083,China; 2. Shanghai Botanical Garden, Shanghai 200231,China）
关键词:
 ; 玫玉; 耐盐; 光合特性; 气孔限制性因素
Keywords:
sweet gem;  salt tolerance;  photosynthetic characteristic;  stomatal limitation factor
分类号:
S759.3
DOI:
doi:10.3969/j.issn.1001-7461.2014.04.13
文献标志码:
A
摘要:
以2年生茶花新品种‘玫玉’盆栽苗为材料，设置0、50、100、200、400 mmol·L-1NaCl的盐浓度进行盐胁迫试验，研究盐胁迫对茶花的相对生长量、盐害情况及光合特性的影响。结果表明，随着NaCl浓度的提高，茶花幼苗新梢的生长受到了抑制，且浓度越高，抑制作用越明显，50 mmol·L-1 NaCl处理后植株的相对生长量与其他3个处理存在显著性差异（p<0.05）；盐害指数和盐害率则随着盐浓度的增加而增加，其中50 mmol·L-1 NaCl处理的植株在处理28 d后，相对生长量为65%，盐害指数为22.2%，植株生长状况良好，且慢慢适应了低盐环境。茶花的光合速率（Pn）、蒸腾速率（Tr）以及气孔导度（Gs）均随NaCl浓度的提高而降低，并与CK存在显著差异；NaCl胁迫下，气孔限制因素在50 mmol·L-1 NaCl胁迫时起主导作用，而在100、200、400 mmol·L-1 NaCl胁迫时，气孔限制因素和非气孔限制因素共同起作用。
Abstract:
Seedlings of two-year-old Camellia japonica cultivar ‘Sweet Gem’ were used as plant materia1 to test their salt tolerance with different salt concentrations (0, 50, 100, 200, 400 mmol·L-1 NaCl). Related parameters were measured, such as the growth, salt injury and photosynthetic characteristics. The growth of young sprouts was inhibited by salt stress, and the degree of inhibition increased with the increase of salt concentrations. Significant difference were found in relative growth between 50 mmol·L-1 NaCl treatment and other three treatments (p<0.05). Under the treatment of 50 mmol·L-1 NaCl for 28 d, the seedlings grew well, they adapted low salt concentration environment slowly, in which the relative growth increment, injury index were 65% and 22.2%, respectively. The net photosynthetic rate (Pn), transpiration rate (Tr) and stomatal conductance (Gs) reduced with the increase of salt concentration, and significantly different from those of the control. Stomatal limitation factor played a leading role in 50 mmol·L-1 NaCl treatment. However in other three treatments, stomatal limitation factor and the non-stomatal limitation factors were both at work.

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备注/Memo

备注/Memo:
 收稿日期：2013-10-12修回日期：2013-12-16
基金项目：上海市科学技术委员会科研计划项目（11391901102）。
作者简介：郭卫珍，女，硕士研究生，研究方向：园林植物栽培。E-mail:guoweizhen1988@sohu.com
*通信作者：刘燕，女，教授，博士生导师，研究方向：园林植物。E-mail:chbly@sohu.com
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