1974 年 39 巻 4 号 p. 791-799
A number of diploid and polyploid species of wheat have been subjected to the condition of high temperature. The various temperature treatments have been found to induced formation of univalents in a number of Pollen mother cells of different varieties. The distribution of cells showing such univalents has been studied. It has been found that in almost all the plants, the distribution is of a poisson type. The significance of this type of distribution has been discussed.