贵州茶树主栽品种福鼎大白茶冷害指标研究

侯双双; 古书鸿; 谷晓平; 薛旭; 韩淑梅; 胡家敏; 刘宇鹏

doi:10.19303/j.issn.1008-0384.2019.12.006

贵州茶树主栽品种福鼎大白茶冷害指标研究

doi: 10.19303/j.issn.1008-0384.2019.12.006

1.
贵州大学生命科学学院，贵州　贵阳　550025
2.
贵州省山地气候环境研究所，贵州　贵阳　550025

基金项目: 贵州省农委合作项目（黔农函[2017]89号）；贵州省科技计划项目（黔科合NY字[2011]3091号）；贵州省科技计划项目（黔科合支撑[2016]2612号）；贵州大学引进人才科研项目（自然科学）（贵大人基合字[2016]34号）

详细信息

作者简介:
侯双双（1987−），女，硕士，讲师，研究方向：农业气象灾害及生态学（E-mail：191298318@qq.com）

通讯作者:
谷晓平（1968−），女，博士，教授级高工，研究方向：气候、生态学（E-mail：16114331@qq.com）

中图分类号: S 166
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- 被引次数: 0
出版历程
- 收稿日期: 2019-07-23
- 修回日期: 2019-09-23
- 刊出日期: 2019-12-01

Cold-injury Indicator for Camellia sinensis cv. Fuding-dabaicha in Guizhou Province

1.
College of Life Sciences, Guizhou University, Guiyang, Guizhou　550025, China
2.
Guizhou Institute of Mountainous Environment and Climate, Guiyang, Guizhou　550025, China

摘要

摘要: 目的探明贵州茶叶主栽品种福鼎大白茶的低温冷害指标，为精准茶叶气象指数保险和茶叶农业气象服务提供科学指导。方法利用人工气候室模拟贵州低温冷害天气过程，测定茶叶不同低温冷害过程中生理指标以反映茶叶低温环境下的生长状态；拟合细胞伤害率与低温胁迫之间的Logistic函数关系，确定茶树生长的低温半致死温度，以量化不同低温冷害天气过程中茶叶的冷害指标。结果随低温程度的加重，SOD活性大致呈上升趋势，MDA含量大致呈先升高后下降趋势，相对电导率R呈持续上升趋势；低温冷害持续日数不同，对应低温半致死温度不同，低温持续时间越长低温半致死温度越高，低温冷害天气持续3、5和7 d时，低温半致死温度分别为1.5 、1.8 和2.6℃。结论福鼎大白茶冷害生长响应特征与低温冷害程度和持续天数密切相关：最低温度3℃以下的低温危害比3℃以上大；低温过程持续7 d的低温危害比持续3、5 d时严重；低温半致死温度随冷害持续时间的延长而升高，因此低温冷害指标的制定应依据当地倒春寒冷害气候特征进行量化。
- 贵州 /
- 福鼎大白茶 /
- 低温冷害 /
- 生理指标 /
- 低温半致死温度
Abstract: Objective A cold-injury index for Camellia sinensis cv. Fuding-dabaicha, the major tea cultivars in Guizhou, was established to provide the meteorological information for precision insurance actuary and agro services on the crop. Method Physiological indices that reflect the growth of the tea plants under simulated low-temperatures in an artificial climate chamber were monitored. Semi-lethal temperature of the plants by cold stress was mathematically determined on a logistic function between the rate of injured cell and treatment temperature. Result With the lowering temperature, the physiological responses of the plants showed a gradually increased SOD activity, initially raised and then declined MDA, and continuously increased relative electric conductivity. The semi-lethal temperature of the plants differed depending upon the duration of cold treatment. The longer the plants were exposed to the chill, the higher the semi-lethal temperature became. When the cold lasted for 3 d, 5 d, and 7 d, the semi-lethal temperatures rose to 1.5℃, 1.8℃, and 2.6℃, respectively. Conclusion The growth responses of C. sinensis under low-temperature closely related to severity as well as duration of the exposure. At a temperature below 3℃, the harm imposed on the plant was more serious than above 3℃. And, a severe cold-injury would likely to incur if the treatment lasted for 7 days than 3 d or 5 d on the plants. The semi-lethal temperature of a plant increased with prolonged cold exposure. Thus, the cold-injury index should be applied with a consideration of local climatic conditions.
- Guizhou /
- Camellia sinensis cv. Fuding-dabaicha /
- cold-injury /
- physiological indices /
- semi-lethal temperature

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图 1 低温胁迫下茶叶SOD活性特征

Figure 1. SOD properties in tea plants under low-temperature stress

下载: 全尺寸图片幻灯片

图 2 低温胁迫下茶叶MDA特征

Figure 2. MDA properties in tea plants under low-temperature stress

下载: 全尺寸图片幻灯片

图 3 低温胁迫下茶叶相对电导率R特征

Figure 3. Relative electric conductivity of tea plants under low-temperature stress

下载: 全尺寸图片幻灯片

图 4 低温1/6处理前后对比

（左上：处理前，右上：处理3 d后，左下：处理5 d后，右下：处理7 d后）

Figure 4. Contrast of low temperature 1/6 for treatment before and after

(Top left: before processing, Top right: after 3 d, Lower left: after 5 d, Lower right: after 7 d)

下载: 全尺寸图片幻灯片

表 1 不同低温冷害持续时间下的茶叶Logistic函数参数及低温半致死温度

Table 1. Parameters in logistic function and semi-lethal temperature of tea plants in response to duration of low-temperature exposure

低温冷害持续时间 Chilling damage duration	a	b	相关系数R² Correlation coefficient	低温半致死温度/℃ Lethal temperature
3 d	0.26	0.92	0.93^*	1.5℃
5 d	0.12	1.18	0.99^**	1.8℃
7 d	0.21	0.61	0.95^**	2.6℃
注：*拟合度达＜0.05的显著性水平；拟合度达＜0.1的显著性水平。 Note: *indicates the significance level is 0.05; indicates significance level is 0.1.

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