Idaho locust （Robinia pseudoacacia ‘Idaho＇） is an exotic multi-purpose tree used in landscaping, soil and water conserva- tion, fodder sources and others. To improve its drought tolerance for reclaiming arid land,...Idaho locust （Robinia pseudoacacia ‘Idaho＇） is an exotic multi-purpose tree used in landscaping, soil and water conserva- tion, fodder sources and others. To improve its drought tolerance for reclaiming arid land, five lines of transformed mtl-D gene, as osmotic regulator in plant cells, have been selected and managed to determine their drought tolerance under experimental conditions. Qualitative and quantitative variables of transformed plants were studied. The critical value of drought tolerance was determined by detecting the 2,3,5-triphenyl tetrazolium chloride （TTC） reductants in roots and soil water content （SWC）. The critical value for drought tolerance was SWC 6% while for the control plants the critical SWC was 8%; a moderate level of SWC is 13% and the highest SWC for plant endurance was 18%. The method proved to be reliable and sensitive in the evaluation of drought tolerance for forest trees.展开更多
The purpose of this research is to reduce requirements for decision maker (DM)to supply preference information during the interactive multiojective decisionmaking process. By introducing a concept of displaced toleran...The purpose of this research is to reduce requirements for decision maker (DM)to supply preference information during the interactive multiojective decisionmaking process. By introducing a concept of displaced tolerant value, a newalsorithm (called IDTV) is presented. It allows the DM to choose convenientways and contents of supplying necessary information according to differentconditions. A detailed dexseription of the algorithm is provided and a numericalexample is also given to illustrate the procedure described.展开更多
文摘Idaho locust （Robinia pseudoacacia ‘Idaho＇） is an exotic multi-purpose tree used in landscaping, soil and water conserva- tion, fodder sources and others. To improve its drought tolerance for reclaiming arid land, five lines of transformed mtl-D gene, as osmotic regulator in plant cells, have been selected and managed to determine their drought tolerance under experimental conditions. Qualitative and quantitative variables of transformed plants were studied. The critical value of drought tolerance was determined by detecting the 2,3,5-triphenyl tetrazolium chloride （TTC） reductants in roots and soil water content （SWC）. The critical value for drought tolerance was SWC 6% while for the control plants the critical SWC was 8%; a moderate level of SWC is 13% and the highest SWC for plant endurance was 18%. The method proved to be reliable and sensitive in the evaluation of drought tolerance for forest trees.
文摘The purpose of this research is to reduce requirements for decision maker (DM)to supply preference information during the interactive multiojective decisionmaking process. By introducing a concept of displaced tolerant value, a newalsorithm (called IDTV) is presented. It allows the DM to choose convenientways and contents of supplying necessary information according to differentconditions. A detailed dexseription of the algorithm is provided and a numericalexample is also given to illustrate the procedure described.
