Volume 26 Issue 1
Feb.  2009
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JIA Si-hen, FANG Wei-in, CHEN Fa-di, CHEN Su-mei, YANG Xue-meng. Heat tolerance for summer blooming of Chrysanthemum[J]. Journal of Zhejiang A&F University, 2009, 26(1): 52-57.
Citation: JIA Si-hen, FANG Wei-in, CHEN Fa-di, CHEN Su-mei, YANG Xue-meng. Heat tolerance for summer blooming of Chrysanthemum[J]. Journal of Zhejiang A&F University, 2009, 26(1): 52-57.

Heat tolerance for summer blooming of Chrysanthemum

  • Received Date: 2008-05-15
  • Rev Recd Date: 2008-08-28
  • Publish Date: 2009-02-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Heat tolerance for summer blooming of Chrysanthemum

Abstract: Summer chrysanthemum varieties in seasonal high temperatures differ in their blossoming characteristics. To evaluate heat-tolerance and to choose heat resistance indicators for Chrysanthemum that bloom in summer,physiological indicators,anatomic structure,and blooming traits were among 13 indicators,studied in five cultivars—‘Huoju’,‘Zihe’,‘Fenhe’,‘Jinguang’,and ‘Jinxing’. Principal component and subordinate function analyses were used. Results showed that both superoxide dismutase (SOD) activity and malondialdehyde (MDA) content in leaves as well as the integral of the diurnal net photosynthetic rate (Pn) could be used as heat-tolerance evaluation indexes. A comprehensive evaluation model D=-1.818 + 0.013x2 + 0.008x6 + 0.002x8 - 0.000 048x13,where x2 is the blooming period,x6 is the SOD activity in leaves,x8 is the MDA content in leaves,and x13 is the integral of diurnal Pn,was developed. A significant correlation (P<0.001,R=0.973) between predictive value (Vp) and D was also found. The decreasing order for heat tolerance of D with the five cultivars was ‘Huoju’>‘Zihe’>‘Fenhe’>‘Jinguang’>‘Jinxing’. [Ch,4 tab. 14 ref.]

JIA Si-hen, FANG Wei-in, CHEN Fa-di, CHEN Su-mei, YANG Xue-meng. Heat tolerance for summer blooming of Chrysanthemum[J]. Journal of Zhejiang A&F University, 2009, 26(1): 52-57.
Citation: JIA Si-hen, FANG Wei-in, CHEN Fa-di, CHEN Su-mei, YANG Xue-meng. Heat tolerance for summer blooming of Chrysanthemum[J]. Journal of Zhejiang A&F University, 2009, 26(1): 52-57.

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