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浙江大学学报（农业与生命科学版）
Journal of Zhejiang University: Agric. & Life Sci.  2011, Vol. 37 Issue (2): 155-161    DOI: 10.3785/j.issn.1008-9209.2011.02.006
Biological sciences & biotechnology     
Responses of Salvia splendens cultivars ‘Shenzhouhong’ and ‘Emperor’ to thermo-stress
LIU Hui1,2,ZHANG Guo-ping1,SHEN Guo-zheng2,FU Qiao-juan2,RUAN Song-lin3
1 .Institute of Crop Science , College of Agriculture & Biotechnology , Zhejiang University , Hangzhou 310029 , China ; 2 .Department of Horticulture , Hangzhou Academy of Agricultural Sciences , Hangzhou 310024 ,China ; 3 .Department of Biotechnology , Hangzhou Academy of Agricultural Sciences , Hangzhou 310024 ,China
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Abstract  In order to study the thermo-tolerance of two Salvia splendens Ker -Gawl cultivars , i .e . Shenzhouhong ,a nationally -bred variety , and Emperor , an imported variety , some morphological and physiological traits were measured under high temperature stress , including relative content of chlorophyll (SPAD value) ,Fv/Fm (maximum quantum yield of photosystem Ⅱ photochemistry) ,CAT(catalase) ,POD (peroxidase) and SOD (superoxide dismutase) activities ,MDA (malondialdehyde) and prolinecontents . High temperature stresses were conducted in the field with natural high temperature and in the intelligent climate incubator at 40℃ .The results showed that cultivar 'Shenzhouhong' had longer florescence ,and its rown diameter , inflorescence duration length were less affected by thermo-stress than cultivar 'Emperor' under naturally high temperature .In the intelligent climate incubator at 40 ℃ ,there was no significant difference in SPAD values between two cultivars . While thermo-stress resulted in significant reduction of Fv/Fm and SOD activity ,and significant increase of CAT and POD activities ,MDA and proline contents for two cultivars . Moreover ,the changed extent of these physico-chemical traits of the two cultivars differed greatly under high temperature stress . The results above suggest  that cultivar  'Shenzhouhong'  shows much greater ability than cultivar 'Emperor' in developing light protection and active oxygen scavenging system in response to thermo -stress .

Published: 25 March 2011
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LIU Hui
ZHANG Guo-ping
SHEN Guo-zheng
FU Qiao-juan
RUAN Song-lin
Cite this article:

LIU Hui,ZHANG Guo-ping,SHEN Guo-zheng,FU Qiao-juan,RUAN Song-lin. Responses of Salvia splendens cultivars ‘Shenzhouhong’ and ‘Emperor’ to thermo-stress. Journal of Zhejiang University: Agric. & Life Sci., 2011, 37(2): 155-161.

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http://www.zjujournals.com/agr/10.3785/j.issn.1008-9209.2011.02.006     OR     http://www.zjujournals.com/agr/Y2011/V37/I2/155


一串红品种‘神州红’和‘帝王’对高温胁迫的响应

以自育的一串红新品种 '神州红'与进口品种' 帝王'为材料 , 在田间模拟自然高温及人工气候箱高温胁迫 ( 40 ℃ ) 条件下 , 研究高温胁迫对一串红生育期和田间生长指标以及一串红叶片叶绿素含量(SPAD 值 ) 、 Fv/Fm( 光系统Ⅱ最大光化学效率 ) 、过氧化氢酶 (CAT) 活性、过氧化物酶 (POD) 活性、超氧化物歧化酶 (SOD) 活性、丙二醛 (MDA) 和脯氨酸含量的影响 , 并比较这2个品种的耐热性差异 . 结果表明 : 在田间模拟自然高温条件下 ,'神州红'比'帝王' 的耐热性强 , 具体表现在'神州红'花期较长 , 冠幅和花序长度均比'帝王'受高温影响的程度小 ; 在人工气候箱高温胁迫条件下 , 2个一串红品种的叶绿素含量均降低 , 但2个品种未显示出耐热性差异 ; 高温胁迫明显降低2个品种的 Fv/Fm 值和 SOD 酶活性 ,显著增加 CAT 和 POD 活性以及 MDA 和脯氨酸含量 , 且2个品种间的以上性状受高温影响的程度有明显差异 ; 与'帝王'相比 ,'神州红'的光保护机制和活性氧清除系统较强 .
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