低温胁迫下美洲黑杨与大青杨杂种无性系若干生理指标变化研究

江锡兵; 宋跃朋; 马开峰; 郭斌; 安新民; 张志毅; 史志伟; 徐兰丽; 张有慧

低温胁迫下美洲黑杨与大青杨杂种无性系若干生理指标变化研究

1 北京林业大学林木育种国家工程实验室，林木花卉遗传育种教育部重点实验室，国家林业局树木花卉育种与生物工程重点开放实验室2 河北省平泉县林业局3 山东省冠县国营苗圃

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- 收稿日期: 1899-12-31
- 修回日期: 1899-12-31
- 发布日期: 2012-01-29

Changes of several physiological indices in hybrid clones of Populus deltoides Bartr. ×P. ussuriensis Kom. under low temperature stress.

1 National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Tree and Ornamental Plant Breeding and Biotechnology Laboratory of State Forestry Administration, Beijing Forestry University, 100083, P. R. China; 2 Forest Administration of Pingquan County, Hebei, 067500, P. R. China; 3 National Nursery of Guanxian County, Shandong, 252500, P. R. China.

摘要

摘要: 以美洲黑杨与大青杨6个杂种无性系1年生扦插苗为材料，对其5 ℃ 连续5 d低温胁迫过程中若干生理指标的变化规律进行研究。结果表明，随着胁迫时间的延长，6个无性系叶绿素含量和最大光能转换效率逐渐降低，丙二醛含量保持逐渐上升趋势，而可溶性糖与可溶性蛋白含量均呈现出先上升后下降的趋势。此外，各指标6 个无性系间差异明显：无性系DU146 和DU147 叶绿素含量、最大光能转换效率、可溶性糖以及可溶性蛋白含量在胁迫过程中均相对较高，而丙二醛含量及其增加倍数相对较低，说明其具有较强的光合作用及低温耐受能力；其次是无性系DU136 和DU165；而无性系DU135 和DU150光合作用及低温耐受能力较弱。
- 杨树 /
- 无性系 /
- 低温 /
- 叶绿素 /
- 最大光能转换效率 /
- 丙二醛 /
- 可溶性糖 /
- 可溶性蛋白
Abstract: Cuttings of six hybrid clones of P. deltoides×P. ussuriensis were exposed to consecutive low temperatures (5 ℃, 0 to 5 days) to study the variation of several physiological indices. The results indicated that under low temperature stress, chlorophyll content and Fv/Fm values in the six hybrid clones decreased gradually; MDA content kept a gradually increasing trend; content of soluble sugar and soluble protein increased first and then declined. In addition, there were significant differences among the six clones in those physiological indices under low temperature stress, and chlorophyll content, Fv/Fm values, soluble sugar and soluble protein content in clones DU146 and DU147 were the highest, whereas MDA content and the increased multiples were the lowest, reflecting that they possessed more photosynthetic and lowtemperaturetolerant abilities; clones DU136 and DU165 were in the next place, whereas clones DU135 and DU150 were the weakest.
- poplar /
- clone /
- low temperature /
- chlorophyll /
- Fv/Fm /
- malondialdehyde /
- soluble sugar /
- soluble protein

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低温胁迫下美洲黑杨与大青杨杂种无性系若干生理指标变化研究

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Changes of several physiological indices in hybrid clones of Populus deltoides Bartr. ×P. ussuriensis Kom. under low temperature stress.

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