The survival ratio of Chinese cabbage buds decreased when theseeds were planted in the sterilized soils inoculated with RL_4,a rifimpi-cin-resitant strain of Erwinia carotovora pv.carotovora Dye. The infected seedlings shortened and the leaves became dark-green.The pathogenic bacteria were recovered from the contaminated seedlin-gs and the range of bacterial quantity in different tissues was from 10~2—10~7CFU/g,with a larger number in the young stem than the numberin any other organs.The pathogenic bacteria...
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