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研究在番茄褐斑病菌毒素作用下,番茄抗、感病品种的根数、根长、芽长及根的电导值和PAL活性变化情况。结果表明:抗、感病番茄品种的根数、根长、芽长均受到抑制,根的电导值及叶片的苯丙氨酸解氨酶(PAL)活性升高;抗病品种的根数、根长、芽长受毒素的影响较感病品种小,即感病品种对毒素敏感,且抗、感病品种的电导值间差异达显著水平;抗病品种的PAL活性增加幅度较感病品种大。
The effects of Tomato Toxins on tomato resistance, the number of susceptible varieties of roots, root length, shoot length and root conductivity and PAL activity changes. The results showed that the root number, root length and shoot length of resistant and susceptible tomato varieties were all inhibited, and the conductance value and the phenylalanine ammonia lyase (PAL) activity of roots were increased. The number of resistant varieties, Root length and bud length were less affected by toxins than susceptible varieties, that is, susceptible varieties were sensitive to toxins, and the difference between the conductance values of resistant and susceptible varieties was significant. The increase of PAL activity of susceptible varieties was higher than that of susceptible varieties Big.