Morphological, Physiological and Biochemical Responses of Gerbera Cultivars to Heat Stress
文献类型: 外文期刊
第一作者: Chen, Wen
作者: Chen, Wen;Han, Weiqing;Wu, Zheng;Lai, Qixian;Zhu, Xiaoyun;Chen, Wen;Lai, Qixian;Lai, Qixian
作者机构:
关键词: cultivar comparisons;Gerbera jamesonii;heat tolerance;phenotypic analysis;physiological and biochemical characteristics
期刊名称:KOREAN JOURNAL OF HORTICULTURAL SCIENCE & TECHNOLOGY ( 影响因子:0.589; 五年影响因子:0.443 )
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收录情况: SCI
摘要: Heat stress is an agricultural problem for Gerbera jamesonii, and it often causes poor seedling growth, reduced flower yield and undesirable ornamental characteristics of flowers. However, little is known about the effect of heat stress on the morphological; physiological and biochemical characteristics of gerbera plants. Here, the responses of six cultivars of Gerbera jamesonii to heat stress were investigated. Under a 1-d heat treatment at 45 degrees C, the leaves of gerbera cultivars showed yellowing, wilting, drying and death to varying degrees. The heat treatment also resulted in increased electrical conductivity, decreased soluble protein and chlorophyll contents, and the accumulation of malondialdehyde (MDA) and proline in leaves. Moreover, heat tolerance differed among the six tested gerbera cultivars. Our results demonstrated that among the six gerbera cultivars, 'Meihongheixin' is a heat-resistant cultivar, whereas 'Beijixing' is a heat sensitive one. 'Shijihong' and 'Linglong' are relatively heat-resistant cultivars, and 'Dadifen' and 'Taiyangfengbao' are relatively heat sensitive.
分类号: S6
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