Association Euratom - ITAL, Wageningen.
Theor Appl Genet. 1969 Jan;39(5):187-96. doi: 10.1007/BF00281973.
A brief review is presented of the temporary and permanent effects which are usually observed after irradiation treatment of self-incompatible plants with a one locus-system of gametophytic incompatibility and attempts are made to demonstrate that the study and exploitation of such effects can lead to important advances in the fields of mutation breeding, radiobiology per se and biochemistry.The fact that irradiation treatment has only negative effects on the self-incompatibility system (inactivation of the incompatibility reaction and/or genetic losses at the S locus) is discussed in relation to the positive changes (formation of new specificities) which are observed during inbreeding. In this connection, the suggestion is made that the self-incompatible plant may perhaps be equipped with a switch system or a mutagenic mechanism which enables it to display a new specificity when this new specificity is needed for increasing the level of genetic polymorphism in the population to which the plant belongs.
简要回顾了用配子体不亲和的单基因座系统辐照处理自交不亲和植物后通常观察到的暂时和永久效应，并试图证明研究和利用这些效应可以在诱变育种、放射生物学本身和生物化学等领域取得重要进展。讨论了辐照处理对自交不亲和系统（不亲和反应的失活和/或 S 位点的遗传损失）只有负面影响的问题，同时也讨论了在自交过程中观察到的积极变化（形成新的特异性）。在这方面，提出了这样一种可能性，即自交植物可能配备了一种开关系统或诱变机制，使其在需要增加其所属种群的遗传多态性水平时能够表现出新的特异性。
