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小麦品种对赤霉病的抗性主要表现在抗病害扩展,而不是抗病菌侵入。抗病品种的特点是病害自侵染点向邻近小穗扩展速度慢,穗轴受害轻或不受害,病小穗数少;在感病品种上,病害扩展速度快,可导致全穗枯萎。不同抗性品种对真菌毒素的敏感程度不一,抗病品种耐毒力强,细胞膜损伤程度轻,胞内电解质外漏量少;这种电解质外漏量间的差异,可采用电导仪测定组织侵出液的电导率而加以确定。
The resistance of wheat cultivars to Fusarium head blight is mainly manifested in the expansion of disease resistance rather than invasion of germs. Disease-resistant varieties are characterized by disease spread from the infested point to the adjacent spikelet slow, cob damage light or not, the number of spikelets less; susceptible varieties, diseases spread rapidly, can lead to whole head wilt. Different resistant varieties have different sensitivity to mycotoxins, resistant varieties are highly virulent, cell membrane damage is light, and the leakage of intracellular electrolytes is small. The difference between the electrolyte leakage can be measured by conductivity meter The conductivity of the invading fluid was determined.