Studies On Ecological Adaptability Of Invasive Plant Solanum Rostratum Dunal. In Inner Mongolia

Field survey of Solanum rostratum Dunal, summed up the invasion rangeand habitat of the yellow thorn eggplant in the region of InnerMongolia.While study on seed germination, reproduction, Physiological andEcological characteristics and adaptability of the local environment indifferent habitats to reveal its invasion and spread of actuality andphysiological basis in Inner Mongolia and Provide a theoretical basis for theeffective prevention and control of the weeds. The main results of the studyare as follows:(1) By investigation showed that the distribution of Solanum rostratumDunal, The species is widely distributed in Jinshan development zoon ofHohhot and TuZuoqi; Guyang of baotou; XiLinhot city; Arhorchin TianshanTown city and Bairin West Banner of Chifeng in Inner Mongolia。Amongthem, the species most widely spread in Arhorchin Tianshan Town and againstthe most serious.(2) Solanum rostratum Dunal seeds was black or brown and irregularkidney-shaped or triangular. the species in soil conditions of the sand: loam,2:1, the germination rate of the highest growing better; Emergence underdifferent overburden depth from1to4cm was greatest for:1,2cm soil layer,germination rate, germination index higher seed germination potentialdifference is more significant（P<0.01）; With the extension of soaking time,Increased Solanum rostratum Dunal seed germination rate, emergenceuniformity growing well.(3) Solanum rostratum Dunal berries can produce36-63seeds thatReproduction is so strong that plants total output of seed in698-13566.Survey showed that, Solanum rostratum Dunal growth in the sandy soil of theindicators of the number of higher value than the other soil texture. Thespecies is adapted to the growth environment of sand land.(4) Analyze the different soil texture Solanum rostratum Dunal in thethorns of the status and the function, found that growth in landfill Solanum rostratum Dunal important values and relative coverage was significantlyhigher than other community types, Its important value even up to reach2.2,while the relative coverage reached0.96, become the absolute advantage inplant community.(5) Research in different soil texture in Solanum rostratum Dunal growthof chlorophyll, proline, malondialdehyde, POD, SOD, CAT six physiologicalindexes and the relationship between the changes in leaf water potential, InHohhot Jinshan Development Zone, the typical soil texture, especially in thegravel and sand land, Changes between the six physiological indices ofSolanum rostratum Dunal leaves its corresponding leaf water potentialshowed obvious adaptability, to reflect Solanum rostratum Dunal plant bodyand the environment in which to adapt.