THE VARIETIES OF CAMELLIA OLEIFERA ABEL CONTRIBUTIONS TO LEAF MORPHOLOGICAL CHARACTERISTICS AND CHLOROPHYLL FLUORESCENCE PARAMETERS DURING AN EXTREME DROUGHT

作者：Luo, Handong; Zhu, Ting; Lei, Xiaolin; Song, Xiaolan; Luo, Laicong; Zhu, Congfei; Liu, Xue; Wang, Kunying; Zhang, Shun; Liao, Yi; Liu, Ganping; Wu, Ruohong; Bai, Jian; Wu, Xiaolong; Guo, Xiaomin; Hu, Dongnan; Niu, Dekui^*

来源：FRESENIUS ENVIRONMENTAL BULLETIN, 2021, 30(8): 10182-10193.

• Camellia oleifera Abel
• drought
• varieties
• chlorophyll fluorescence
• leaf morphological
• principal component analysis

The importance of leaf phenotypic characteristics and chlorophyll fluorescence parameters in the screening of plant high photosynthesis ability is relatively unknown. The drought resistance of plants can be indicated by chlorophyll fluorescence parameters, leaf phenotypic characteristics and leaf nutrient content. During a severe drought, we studied 12 C. oleifera varieties with the same forest age planted in National Gene Bank of C. oleifera Germplasm Resources, Jiangxi Academy of Forestry, China. Chlorophyll fluorescence parameters, leaf phenotypic characteristics and leaf nutrient content were determined, and the drought-resistance of the 12 C. oleifera varieties was evaluated comprehensively by principal component analysis. Principal component scores ranking shows that 12 C. oleifera varieties can be divided into four types. Gan 62 and Gan 64 are the varieties with the strongest drought resistance. Gan71, Gan447, Gan59 and Ganxing 48 are the varieties with strong drought resistance. Ganfu 20, Ganshi 83-6, Gan 51 and Gan68 were generally drought-resistant varieties, while Ganwu3 and Ganshi 83-3 were the least drought-resistant varieties. Our study illustrates the importance of screening of plant high photosynthesis ability of different varieties of C. oleifera to survive environmental stress such as drought.

• 单位
  江西农业大学