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Effect of Silicon on Ryegrass Growth and Photosynthesis Under Composite Subsalt Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年14期
Page:
88-91
Research Field:
Publishing date:

Info

Title:
Effect of Silicon on Ryegrass Growth and Photosynthesis Under Composite Subsalt Stress
Author(s):
XUE Ju-kun1; LI Ji-guang1; JIN Ya-zhong2; CHEN Dan-feng3; SUN Hu4; JI Chun-yan1
1.College of Life Sciences and Technology,Mudanjiang Normal College,Mudanjiang,Heilongjiang 157012；
2.College of Agronomy，Heilongjiang Bayi Agricultural University,Daqing,Heilongjiang 163319；
3.The Second Affiliated Hospital of Mudanjiang Medical College,Mudanjiang,Heilongjiang 157009；
4.School of Civil Engineering,Mudanjiang University,Mudanjiang,Heilongjiang 157011
Keywords:
silicon; subsalt stress; development; photosynthesis
PACS:
X 53
DOI:
-
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.

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Last Update: 2014-08-10