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- Title
水涝胁迫下 2 种乡土草本植物生理特性的响应.
- Authors
戢小梅; 许 林; 谢焰锋; 王湛昌; 陈法志; 陈卫东; 杨守坤; 罗智勇
- Abstract
The research of physiological and biochemical response of Tradescantia albiflora and Acorns tatarinowii Schott occurred under soil waterlogging. The relationship between waterlogging resistant ability and physiological parameters of the two plants was discussed in the pres ent study. The aim was to supply the evidence for scientific cultivation management of the two plants, meanwhile, to provide the theory infor mation for the waterlogging resistant mechanism of herbage. Based on artificial experiment of potted transplants during 45 days, the water tress conditions were simulated with normal state, root waterlogged, 1/5 plant height waterlogged and 1/2 plant height waterlogged. The damage symptoms of two plants had been investigated, and some physiological indices were determined. (i) In different level, the two plants species all showed perfect tolerant ability tolerant to waterlogging. the two plants species all showed perfect ability tolerant to waterlogging. In the nor mal condition of normal state and root waterlogged, superoxide dismutase (SOD) activity, ascorbic acid peroxidase (POD) activity, chlorophyll( Chl) content, soluble protein( SP) content and Malondialdehyde( MDA) content in the leaves or roots of the two plant species, both showed an increasing tendency. (ii) However, there was a remarkable difference in their watelogging or flooding resistant ability among the two plant species. Acorns tatarinowii Schott had the strongest tolerance to waterlogging or flooding, and Tradescantia albifora the weakest. During 45 days of waterlogging or flooding stress, the average increment of POD, SOD activeness, and Chl, SP and MDA content in in the leave of A. tatarinowii Schott were not only greatly higher than the ones in T. albiiora, but also kept the continuing growth tendency and main tained at high levels, while those indexes in T. albiiora showed a trend of sharp decline. For the two plants, water resistant mechanism was probably related to their regulation ability of seedling structure and enzymatic reaction, etc.
- Subjects
SMALL-leaf spiderwort; ACORNS; WATERLOGGING (Soils); IRRIGATED soils; SOIL moisture; PLANTS; GRASSES
- Publication
Southwest China Journal of Agricultural Sciences, 2015, Vol 28, Issue 1, p110
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2015.01.020