. Botanisk tidsskrift. Plants; Plants -- Denmark. 150 — II. Hieracium venosum. The reduction process in this species takes place in the same way as in the preceding case with the difference, however, that the number of the chromosomes is ge- nerally 7. In the somatic cells I have found 14 chromosomes, and the chromo- somes can be seen especially clearly at the first divisions of the tapetum, where they are not so closely aggre- gated. Fig. II A-D, shows four different heterotypic spindle figures from the PMC drawn up with the camera. Even here the chromo- somes are of diffe- rent size and shap
. Botanisk tidsskrift. Plants; Plants -- Denmark. 150 — II. Hieracium venosum. The reduction process in this species takes place in the same way as in the preceding case with the difference, however, that the number of the chromosomes is ge- nerally 7. In the somatic cells I have found 14 chromosomes, and the chromo- somes can be seen especially clearly at the first divisions of the tapetum, where they are not so closely aggre- gated. Fig. II A-D, shows four different heterotypic spindle figures from the PMC drawn up with the camera. Even here the chromo- somes are of diffe- rent size and shape. Their number is in three of them seven, that is the reduced number. Those chromosomes mar- ked a and b are especially unlike the others and can al- ways be easily re- cognized among the exami-. Fig. III. Scheme of the fertilization and the reduction process in Hieracium venosum; a, b, nuclei of the germ cells: c, nucleus of the somatic cells: d, synapsis stage; e. heterotypic spindle; f, prophasis of the second division: g, tetrad. ber of spindle figures, recognize two very long I have found, chromosomes. others. In ning a great num- can very that generally we 3 medium and 1. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Botaniske forening i Kbenhavn; Botaniske forening i Kbenhavn. Journal de botanique; Dansk botanisk forening. Kbenhavn : G. E. C. Gads Forlag
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Keywords: ., bookcentury1800, bookdecade1860, bookpublisher, booksubjectplants
