Effects of dehydration and temperature on seed viability and antioxidative enzymes activities on three kinds of cultivars of Camellia sinensis

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	Effects of dehydration and temperature on seed viability and antioxidative enzymes activities on three kinds of cultivars of Camellia sinensis
	Chen, Z. X. ; Lan, Q. Y. ; Zheng, L. ; Bao, Y. X. ; Luo, Y. L.
刊名	BRAZILIAN JOURNAL OF BOTANY
	2015
卷号	38 期号:3 页码:497-504
关键词	ACTIVE OXYGEN DESICCATION-TOLERANCE RECALCITRANT SEEDS HYDROGEN-PEROXIDE ASCORBATE LEAVES SENSITIVITY GLUTATHIONE MECHANISMS SYSTEM
ISSN号	1806-9959
中文摘要	The paper studied germination characteristics, dehydration sensitivities, and antioxidative enzyme activities of seeds in three varieties of Camellia sinensis L. [C. sinensis var. sinensis cv. Fuding-dabaicha (Fd), C. sinensis var. assamica cv. Menghai-dayecha (Md), and C. sinensis var. assamica cv. Yunkang 10 (Y10)] during desiccation. The optimum germination temperature was 25 degrees C for Fd, 30 degrees C for Md, and 20 degrees C for Y10. Md, Y10, and Fd seeds were all sensitive to dehydration. GPs of three cultivars decreased dramatically after dehydration for 144 h, reaching values of 48, 37, and 57 % for Md, Y10, and Fd when moisture content declined to 17.5, 17.4, and 14.4 %, respectively. The antioxidative enzymes in Md, Y10, and Fd seeds were not as effective as orthodox seeds, none of them can scavenge ROS timely. Thus, lipid peroxidation accelerated. There were differences between seeds of the three cultivars: Fd seeds were smaller in shape than the other two; Fd seeds showed lower sensitivity to dehydration than the other two; and H2O2 contents in Fd seeds were obviously lower than in Md and Y10 seeds, indicating that antioxidative enzymes in Fd seeds were more effective than the other two.
原文出处	10.1007/s40415-015-0167-5
语种	英语
公开日期	2015-12-08
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/9541]
专题	西双版纳热带植物园_支撑系统
推荐引用方式 GB/T 7714	Chen, Z. X.,Lan, Q. Y.,Zheng, L.,et al. Effects of dehydration and temperature on seed viability and antioxidative enzymes activities on three kinds of cultivars of Camellia sinensis[J]. BRAZILIAN JOURNAL OF BOTANY,2015,38(3):497-504.
APA	Chen, Z. X.,Lan, Q. Y.,Zheng, L.,Bao, Y. X.,&Luo, Y. L..(2015).Effects of dehydration and temperature on seed viability and antioxidative enzymes activities on three kinds of cultivars of Camellia sinensis.BRAZILIAN JOURNAL OF BOTANY,38(3),497-504.
MLA	Chen, Z. X.,et al."Effects of dehydration and temperature on seed viability and antioxidative enzymes activities on three kinds of cultivars of Camellia sinensis".BRAZILIAN JOURNAL OF BOTANY 38.3(2015):497-504.