WANG Yong-liang,WANG Wei,DAI Bin,et al.Study on Cold Hardiness of Gazania rigens L.‘White Star’[J].Northern Horticulture,2012,36(02):73-75.
“星白”勋章菊耐寒性研究
- Title:
- Study on Cold Hardiness of Gazania rigens L.‘White Star’
- 文章编号:
- 1001-0009(2012)02-0073-03
- Keywords:
- ‘White Star’ Gazania rigens L.; cold hardiness; low-temperature stress; physiological indexe; garden plants
- 分类号:
- S 6821+1
- 文献标志码:
- A
- 摘要:
- 通过对日本引进的“星白”勋章菊进行不同温度(5、3、1、-1、-3、-5、-7℃)处理,测定了低温胁迫后叶片生理生化指标的变化。结果表明:“星白”勋章菊具较强的抗寒能力,是一种适宜在城市园林广为推广应用的优秀园林植物。随着温度的降低,“星白”勋章菊叶片叶肉细胞的电解渗透率在-1℃以上处理时变化不大,-3℃时略微上升,在-3~-5℃范围内陡然上升。以电解质渗透率为参数,用Logistic方程求得拐点值,确定了勋章菊的低温半致死温度(LT50)为-437℃;丙二醛 (MDA)含量先降低后上升;叶绿素含量变化不大;脯氨酸含量呈先降低后上升再下降的趋势,在-1℃时含量达到最大值。
- Abstract:
- The physio-biochemical index of the leaves of Gazania rigens L. from Japan ‘White Star’ were tested under different low temperature(5,3,1,-1,-3,-5,-7℃). The results showed that ‘White Star’ with a strong cold hardiness, which was a widely suitable for application of the best in the city.With the temperature decreasing, ‘White Star’ chrysanthemum mesophyll cells above the electrolytic permeability -1℃ treatment changed little, at -3℃ increased slightly,but from-3℃ to -5℃,the permeability of cell had a sharply rising. Using Logistic equation determine LT50was -437℃. The quantity of Malondialdehyde(MDA) descended at first and then increased;The quantity of chlorophyll changed little;The quantity of proline decreased first, then decline,at last increased,when at -1℃,the content reached the maximum.The quantity of proline showed drop-rise-drop trend.
参考文献/References:
[1]常福辰,陆长梅,沙莎.植物生理学实验[M].南京:南京师范大学出版社,2007.
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备注/Memo
第一作者简介:王永亮(1986-),男,在读硕士,研究方向为园林建筑与植物保护。E-mail:wangyl0097@126.com 。