XUE Ju-kun,LI Ji-guang,JIN Ya-zhong,et al.Effect of Silicon on Ryegrass Growth and Photosynthesis Under Composite Subsalt Stress[J].Northern Horticulture,2013,37(14):88-91.
硅对复合碱式盐胁迫下黑麦草生长及光合作用的影响
- Title:
- Effect of Silicon on Ryegrass Growth and Photosynthesis Under Composite Subsalt Stress
- 文章编号:
- 1001-0009(2013)14-0088-04
- Keywords:
- silicon; subsalt stress; development; photosynthesis
- 分类号:
- X 53
- 文献标志码:
- A
- 摘要:
- 以多年生黑麦草品种‘Ascend’为试材,采用基质培的方法,研究了硅对复合碱式盐NaHCO3∶Na2CO3(1∶1)胁迫下黑麦草生长和光合作用的影响。结果表明:浓度为0.6%的NaHCO3∶Na2CO3(1∶1)复合碱式盐胁迫下,硅处理有效促进了黑麦草的生长,减缓了叶绿素a的降低幅度,提高了叶绿素b和总叶绿素的含量,缓解了碱式盐胁迫对黑麦草叶片净光合速率的抑制,减缓了气孔导度、蒸腾速率、气孔限制值和水分利用率的降低,缓解了碱式盐胁迫对叶片光合作用的影响,但是硅缓解复合碱式盐NaHCO3与Na2CO3对黑麦草的胁迫存在一定的浓度范围。
- Abstract:
- Taking ryegrass ‘Ascend’ as test material,through soilless culture,the effect of silicon on ryegrass growth and photosynthesis were studied under the stress of composite subsalt NaHCO3and Na2CO3(1∶1).The results showed that under the stress of NaHCO3and Na2CO3 (1∶1) with 0.6% concentration,silicon treatment effectively promoted ryegrass growth,slowed down the decline in Chlorophyll a,increased the content of both Chlorophyll b and total chlorophyll,mitigated the inhibition of ryegrass leaf net photosynthetic rate,slowed the reduction in stomatal conductance,transpiration rate,stomata limitation and water using efficiency,and alleviated the influence of composite subsalt stress on leaf photosynthesis.However,it was within a certain concentration range that ryegrass became under the stress of silicon alleviated composite subsalt NaHCO3and Na2CO3.
参考文献/References:
[1]曲元刚,赵可夫.NaCl和Na2CO3对盐地碱蓬胁迫效应的比较[J].植物生理与分子生物学学报,2003,29(5):387-394.
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备注/Memo
第一作者简介:薛巨坤(1986-),男,硕士,现主要从事植物营养和植物生态等研究工作。