The Research Of Grafting Eggplant To The Low Temperature And Verticillium Wilt Resistance

Eggplant(Solarium melongena L) is one of important vegetable kind in our country,the verticillium wilt (Verticillium wilt) is the main disease in eggplant produces.Make grafted cropping do not bad prevention and cure soil biography disease,the obstacle resolving continuous cropping,strengthen the way a crop is growing planting,deficiency overcoming tradition prevention and cure measure.Study Tuolubam is stock with wild eggplant originally,different from 5 long eggplant of cultivar of type,1 number,green eggplant of Bai Cheng City,call eggplant 5 howl,purplish red poles mornings eggplant,try to get Nika for the scion is in progress graft,self offspring,self anvil seedling are to contrast with every breed,study the cropping effect and disease-resistant ability grafting the day afer tomorrow,handle and the change studying whose physiology biochemistry index's by the fact that the low temperature coercing a bacterium and receiving,then investigation and discussion graft disease-resistant eggplant high yield physiology mechanism,Be to graft technology the basis making use of the theory providing science in giving birth to a child in eggplant.Result is indicated:1 Grafting being able to reduce the eggplant verticillium wilt obviously,diminish whose disease index, remarkable differences between intercurrent disease rate and the condition index assume by different scion. Grow eggplant grafting of one Tuolubam- than the seedling having reduced 28%and 40.88%from offspring's morbidity and disease index.But graft the growth growth being able to promote eggplant,raise output,fruit quality has no obvious change.2 Grafts may reduce the low temperature to adult plant's injury degree.In the low temperature coercion process,from the offspring in vivo cell membrane penetrability,the soluble sugar,the soluble protein,the third two aldehyde is higher than as awhole from the seedling and the graft seedling,but in the O~2" production rate,the SOD activeness,the chlorophyll content,on chlorophyll a/b is actually lower than from zhen the seedling and the graft seedling.Indicated is injured from the offspring the degree must be bigger than the graft seedling and from zhen the seedling far.Showing through selects the wild eggplant stock to carry on grafts may enable the eggplant to have the stronger cell membrane protection ability under the low temperature,thus enables it to have compared to the scion from scion offspring stronger cold resistant ability.3 After grafting the queen and germs invading the protection enzymatic activity,oxygen dyeing the queen eggplant body inner improving to some extent without exception.The seedling reaches self offspring,self anvil grafting a seedling relative initial stage(June 7) conductance leads change to be in being infected with a disease:From the offspring＞,self anvil seedling＞grafts a seedling.H~2O~2 and O~2'that every handles have coming down to varying degrees or increase by as well as CAT and SOD contents are equal.Activity oxygen dyes in the day afer tomorrow prompt in grafting the queen and germs infringing upon rising,indicate pass graft can make the eggplant blade film protect an enzymatic activity in being more horizontal than high tone, the protection effect has been stronger to cytomembrane,has detered activity oxygen from accumulating the film grease peroxidation leading to.4 graft can promote the eggplant photosynthesis,make whose illumination there be an effect made use of. Graft eggplant handling cleanly up respectively close a rate gradually changing a curve without exception for Shuang Feng county type,whose peak value belongs to the sun life plant range inner basically between 25.87 umol.m-2.s-1 1 4.8 7-.The air hole leads degree and the rising rate day change trend is basically consistent, display unimodal curvilinear change equally.Every is handled reaching maximal peak value during the period of 12,is shows and equally for self anvil seedling＞grafts a seedling from the offspring＞Compatriot room CO2 thickness and brightness jointly day change having effect radiation but,disregarding being rise to still come down,the peak value grafting a seedling is all the time higher than self anvil seedling and self offspring.That the brightness therefore,grafting seedling,self anvil seedling and self offspring from eggplant jointly takes a look on that on characteristic property,graft can promote the eggplant photosynthesis,makes whose illumination there be an effect made use of.