Tested 30 varieties of sweet corn to destroy the bacteria Erwinia chrysanthemi pathovar zeae causes stem rot of corn tested. All six series of experiments including four, bacteria, isolates 151XH104-5-57 98-12-2-51. ATS5_03-2 ATS5_10 water sterilization,,,, And Ecc (negative control) of 10 per treatment. By inoculation with a way to use a toothpick to poke sterile colonies of. Bacteria cultured on NA 12 hours dipping into the corn stalks depth of about 0.5 centimeters above ground level at 2-3 cm. And mouth ulcers. With Vaseline and covered with plastic to control humidity. The index evaluates the disease, at two four. And six days after inoculation. By bringing the disease each index is calculated as a percentage of disease. Divided into. Six characteristics and disease resistance traits found bacteria isolates resistant corn had one very (highly resistant. < = 17%) 6 and susceptible varieties (highly susceptible = 85-100%), 2 species bacteria isolates. The two are corn resistance. Two species and more susceptible seven species bacteria isolates, third with corn resistance 0 varieties and susceptible. Eight species bacteria isolates, 4 with corn resistance, two species and very weak. Seven species sterile water, and corn. Ecc not show signs of the disease.
การแปล กรุณารอสักครู่..
