| 盐胁迫对西葫芦叶片光合性能的影响 |
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| 引用本文： | 陈现臣,王彩霞.盐胁迫对西葫芦叶片光合性能的影响[J].河南农业科学,2007(6):100-103. |
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| 作者姓名： | 陈现臣 王彩霞 |
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| 作者单位： | 安阳工学院,河南,安阳,455000 |
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| 摘 要： | 以2个耐盐性不同的西葫芦品种白美西葫芦(盐敏感)和黑皮西葫芦(耐盐)为材料,用不同浓度的NaCl溶液进行处理,研究盐胁迫对西葫芦叶片光合性能的影响。结果表明,盐胁迫条件下,净光合速率(Pn)、叶绿素a(Chla)含量、叶绿素b(Chlb)含量随着盐胁迫浓度的增加和时间的延长总体上呈现下降趋势,而气孔导度(Gs)和胞间CO2浓度(Ci)总体上呈现先下降后上升的趋势,叶片Chlb/Chla比值随盐胁迫时间的延长逐渐升高。耐盐性不同的品种所受到的伤害程度不同,耐盐性强的品种黑皮西葫芦的伤害程度小于耐盐性弱的品种白美西葫芦。
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| 关 键 词： | 盐胁迫 西葫芦 光合作用 |
| 文章编号： | 1004-3268（2007）06-0100-04 |
| 修稿时间： | 2007-03-05 |
Effects of Salinity Stress on Leaf Photosynthesis of Summer Squash |
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| CHEN Xian-chen,WANG Cai-xia.Effects of Salinity Stress on Leaf Photosynthesis of Summer Squash[J].Journal of Henan Agricultural Sciences,2007(6):100-103. |
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| Authors: | CHEN Xian-chen WANG Cai-xia |
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| Institution: | Anyang Institute of Technology, Anyang 455000, China |
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| Abstract: | Two summer squash varieties with different salinity tolerance,Baimei (sensitive) and Heipi(tolerant),were used to study the the effects of salinity stress on leaf photosynthesis by treating their seedlings with different concentration of NaCl.The result showed that the photosynthetic rate,chlorophyll-a content and chlorophyll-b content decreased significantly with the increase of salinity concentration and the prolongation of stress time,while the stomatic conductance and intercelluar CO2 content decreased early and then increased.The ratio of Chlb/Chla was increasing gradually.The extent of injury was different between the two varieties,Heipi being less injured than Baimei. |
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| Keywords: | Salinity stress Summer squash Photosynthsis |
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