Response Of Salt Stress To Halophytes And Mesophyte And Research On Its Resistant Structure Mechanism

Using the optical microscope and the plant physiology biochemistry research technology, from aspects shape, physiological biochemistry, organizational structure and so on, I studied the chenopodium album which the manual regulative condition next two kind of halophyte chenopodiaceae chenopodium album is (Chenopodium album L.), the skin is the alkali skin (Kochia sieversiana (Pallas) C.A. Mey.) and two kinds of mesophyte compositae ragweed is the ragweed (Ambrosia artemisiifolia L.), the ternate leaf ragweed (Ambrosia trifida L.) to the compound salt coercion response characteristic and the resistant structure mechanism, simultaneously has discussed the SOD activeness enhancement material to the plant anti-salinity influence.The findings indicated:The halophyte and the mesophyte under the highly concentrated compound salt coercion condition, Height receives suppresses obviously, under the same level condition the halophyte and the mesophyte compare are suppressed the degree to be low, the SOD activeness enhancement material suppresses to the halophyte and mesophyte's growth has the distinct improvement function, and is more remarkable to halophyte's function; The halophyte and the mesophyte leaf blade cell membrane penetrability increases along with the compound salt coercion density increases, under the same level condition the halophyte and the mesophyte are compared the cell membrane penetrability to increase the scope to be small, the SOD activeness enhancement .material increases to the halophyte and mesophyte's cell membrane penetrability has the obvious inhibitory action, and is more remarkable to halophyte's function; The halophyte and the mesophyte leaf blade SOD activeness increases along with the compound salt coercion density assumes increases the tendency, under the same level condition the halophyte and the mesophyte compare the SOD activeness to increase are more remarkable, the highly concentrated compound salt coercion condition next two kind of halophyte SOD activeness increases the characteristic to be different, the SOD activeness enhancement material is more remarkable to halophyte's SOD active function; The halophyte and the mesophyte leaf blade betaine content increases along with the compound salt coercion' density increases, under the same level condition the halophyte and the mesophyte compare the betaine content obviously to increase, the SOD activeness enhancement material increases to the halophyte and mesophyte's betaine content has the obvious inhibitory action, and is more remarkable to halophyte's function; The halophyte and the mesophyte leaf blade chlorophyll content increases along with the compound salt coercion density assumes the reduced tendency, under the same level condition the halophyte and the mesophyte compare the leaf blade chlorophyll content change degree to be low, the SOD activeness enhancement material causes under the compound salt coercion condition the halophyte and mesophyte's leaf blade chlorophyll content reduces is improved, and is more remarkable to halophyte's function; The compound salt coercion to organizational structure influences and so on halophyte crystal cell, Assimilatory tissue, Parenchyma is big, not remarkable to outside the mesophyte crystal cell's organizational structure influence, the SOD activeness enhancement material causes under the compound salt coercion condition the halophyte and mesophyte's organizational structure change degree reduces.Halophyte oneself often develops newborn promotion absorbing water and so on Protective tissue, conducting tissue, Parenchyma, crystal cell, Assimilatory tissue and guarantees the water structure as well as high physiological biochemistry response ability, therefore under the low concentration even high potency salt coercion condition often in the shape, the organizational structure and the physiological biochemistry aspect does not have the remarkable change to display the obvious resistance; But the mesophyte itself often does not have or very has little the typical halophyte's resistant characteristics, therefore often displays the obvious response change in the low concentration and under the medium density compound salt coercion condition; The SOD activeness enhancement material has the obvious selectivity to the halophyte and the mesophyte anti-compound salt coercion ability's enhancement, possible and halophyte oneself has the high SOD activeness to concern.The halophyte and the mesophyte are compared under the compound salt coercion condition aspects, physiological biochemistry and organizational structure display certain response characteristic, this flies up and down the compound salt coercion the active oxygen injury which, the soil environment appearance of the water creates to the plant body to reduce with the plant body photosynthesis ability drop has the positive role, the halophyte and the mesophyte compare in the adaptation compound salt coercion environment,having a bigger superiority. The halophyte took the plant to the compound salt coercion's each kind of response mechanism, providing the basic theory basis to the salty coercion symbolic characteristic to the halophyte as well as the SOD activeness enhancement material in the saline and alkali land production and the related scientific research application, It is very important for our government in big area saline and alkali lands.