| 摘要: |
| 为了研究低温对草莓生理特性的影响,本研究以草莓“红颜”(beauty)为研究对象,于2016年8月-2017年3月在南京信息工程大学Venlo试验温室内进行低温单因素控制试验,系统测定低温处理下草莓叶片各项指标。结果表明：(1)胁迫时间越长,叶绿素整体趋势下降。特别的,0℃处理7天得到的叶绿素a含量下降水平明显。(2)同一温度处理,随时间的延长,草莓叶片中的可溶性蛋白含量趋势先上升后下降,各处理均高于ck10-110个百分点不等。同一时间不同温度处理中以8℃的含量最高,ck的可溶性蛋白含量最低。(3)同一温度处理，随时间的延长，可溶性糖的变化呈现出下降趋势，除处理7天均显著高于ck23-57个百分点不等。同一时间不同温度处理，温度越高含量越高，除了7d处理外，均高于ck组。(4)温度高净光合速率高,光补偿点显著偏大,光饱和点普遍高。 |
| 关键词: 草莓;低温;生理指标;光响应 |
| DOI： |
| 投稿时间：2021-01-09修订日期：2021-05-06 |
| 基金项目: |
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| Effects of Low Temperature on Physiological Characteristics of Strawberry |
| LiChunSheng,WangMinMin,YangChaoKe,ChenXiaoDan |
| (LiPing Meteorological Bureau of GuiZhou Province) |
| Abstract: |
| In order to study the effect of low temperature on the physiological characteristics of strawberry, this study used strawberry "beauty" as the research object, and carried out a low temperature single factor control test in the Venlo experimental greenhouse of Nanjing University of information engineering from August 2016 to March 2017 to systematically measure various indexes of Strawberry Leaves under low temperature treatment. The results showed that: (1)The longer the stress, the overall trend of chlorophyll decreased. In particular, the content of chlorophyll a decreased significantly after treatment at 0℃ for 7 days. (2) At the same temperature, the soluble protein content in strawberry leaves increased first and then decreased with the extension of time, and each treatment was higher than those of ck Control group 10-110 percentage points. At the same time and at different temperatures, the soluble protein content of 8℃ was the highest, and the soluble protein content of ck was the lowest. (3)At the same temperature with the extension of time, the change of soluble sugar showed a downward trend, the treatments were significantly higher than ck 23-57 percentage points except the treatment for 7 days. At the same time and at different temperatures, the higher the temperature, the higher the content, and the treatments were higher than CK group except the treatment for 7 days. (4) At high temperature, photosynthetic rate is higher, light compensation point is significantly larger, and light saturation point is generally higher. |
| Key words: Fragaria ananassa Duch;Low temperature;physiological index;light response curve |
