抄録
1. Different methods of fixing root tips and Pollen mother cell smears of peas are described and discussed.
2. Formalin appears to render some of the nucleolar material and the matrix substance of somatic and meiotic chromosomes soluble in water, or to fail to render them insoluble as do chromic-fatty acid-formalin fixatives.
3. Alcohol appears to dissolve the meiotic chromosome matrix or to render it achromatic.
4. An intimate relationship between, and possible identity of nucleolar material and the matrix substance of somatic chromosomes is established.
5. The metotic and meiotic ehromosomes are described. The characters of each of the seven 'pairs permit identification of the individual members of the complement. They are as follows:
6. The chromonemata of the first meiotic metaphase and the chromosomes of later stages are found to show the Same individual characteristics as the somatic chromosomes.
