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Cloning,location and overexpression of catechol 2,3dioxygenase gene(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Vol.09 No.5
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Cloning,location and overexpression of catechol 2,3dioxygenase gene
ZHANG Jieet al.
(College of Pastoral Agriculture Science and Technology, Lanzhou University, Gansu Grassland Ecology Research Institute, Lanzhou730020, China ) (1 Key Laboratory for Biodiversity Science and Ecological Engineering of MOE, Institute of Biodiveristy Science, Fudan Univerisity, Shanghai200433, China)
Keywords climatic facors Lolium perenne Trifolium repens Artemisia lactiflora population growth individual growth and decline modules

Abstract The experiment was conducted to determine growth traits of perennial ryegrass (Lolium perenne), white clover (Trifolium repens) and ghostplant wormwood (Artemisia lactiflora) and their individual growth and decline characteristics in mixed perennial ryegrass/white clover pasture by mathematical statistics method, and the influences of air temperature, precipitation and sunshine hours on their modules growth were analyzed. Temperature had a significant negative effects (P﹤ 0.01) on tillers generation of perennial ryegrass, A positive significant (P﹤0.01) or weak significant (P﹤0.1) existed relationship existed between temperature or precipitation and leaf growth of ryegrass, stolon extension of white clover and side branch growing of ghostplant wormwood, and sunshinehours had negative effects on growing of the three species. The interaction effects between temperature and sunshinehours were greater than those between temperature and precipitation. A mutual growth and decline characteristics existed in tillers of ryegrass and ramifications of white clover, whereas a mutual promote process occurred in leaf growth of ryegrass and stolon growing of white clover. There was a positive action between side branch growing of ghostplant wormwood and stolon extension of white clover, while growing points of the two species transformed from mutual promotion to inhibition process, and population growth of ryegrass and white clover existed a positive relationship. Leaf growth of ryegrass, stolon extension of white clover and side branch growing of ghostplant wormwood existed evident seasonal dynamics pattern whereas growing points of this three species was an inverse situation. Tillers of ryegrass and side buds of ghostplant wormwood were produced more in summerautumn stage than other growing stages, and there was a latent arising dominance for leaf growth of ryegrass and side branch of ghostplant wormwood, in laterspring and in flourish stage (June~September), respectively. Fig 1, Tab 3, Ref 27




Last Update: 2001-10-23