论文部分内容阅读
近年来,在水稻病害的防治上,“遗传防御”已日益为人们所强调。所谓“遗传防御”可以理解为利用作物与病菌之间的遗传关系,抗御病菌的侵害。具体说,就是利用抗病品种防治病害在利用抗病品种防治稻瘟病的过程中,往往见到抗病品种在栽种几年后丧失抗病性的情形。也见到一些品种在此地抗病,但在彼地却有表现感病的现象。同年,同地,同一品种的病害程度悬殊很大的情形,也累见不鲜。因此,在育成了抗病品种之后,如何因地制宜利用这些抗病品种防治稻瘟病的为害,便逐渐成为稻瘟病防治研究中的主要课题之一。本文拟在简要概述植物抗病性研究
In recent years, the prevention and treatment of rice diseases, “genetic defense” has been increasingly emphasized. The so-called “genetic defense” can be understood as the use of crops and the genetic relationship between bacteria, resist the invasion of germs. Specifically, it is the use of disease-resistant varieties of disease prevention and control in the use of disease-resistant varieties of blast control in the process, we often see resistant varieties in planting a few years after the loss of disease resistance. There are also some breeds that have also seen disease resistance here, but there is a sign of sickness in Petri. The same year, with the same species of great degree of disease disproportionate situation, but also not uncommon. Therefore, after breeding resistant varieties, how to use these resistant varieties to control the damage of rice blast according to the local conditions has gradually become one of the major topics in the research on the control of rice blast. This article is a brief overview of plant disease resistance