论文部分内容阅读
近五年来,高粱丝黑穗菌的一个新的生理小种在辽阳、忻县发生。它侵染抗病的杂交高粱晋杂五号等。这个小种与公主岭小种的主要区别在于对3197A及甜高粱苏马克的致病力。自1970年以来,大面积栽培亲缘单一的杂交种是导致生理小种发生与变异的原因。
In the past five years, a new physiological race of Sorghum black smut has occurred in Liaoyang and Xin County. It infects disease-resistant hybrids to Jinzaoliang and so on. The main difference between this races and Gongzhuling race is the virulence of 3197A and sweet sorghum. Since 1970, large-scale cultivation of relatives with single hybrids is the reason for the occurrence and variation of physiological races.