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Chromosome Numbers in Holcus mollis
Nature, 1953INVESTIGATIONS into the interspecific relations of Holcus lanatus and H. mollis have shown that their F1 hybrids are male-sterile, having only 1–20 per cent of stainable pollen. Chromosome counts have been made on twenty-three of these hybrids with the results given in Table 1.
A R, BEDDOWS, K, JONES
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CHROMOSOME NUMBERS IN THE ANNONACEAE
American Journal of Botany, 1948which had induced them. When isolated from the normal stem tissue and grown in vitro, the induced tumors lost their characteristic structure and reverted to the structureless condition of the original tumor tissue. The theory is put forward that induced tumors may be composite structures into the make-up of which both normal and tumor tissue enter, the
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CHROMOSOME NUMBERS IN UMBELLIFERAE. V.
American Journal of Botany, 1971Chromosome numbers are reported for nearly 300 collections of Umbelliferae. Of these, 150 representing “new” or variant counts are figured. Karyotypes of fifteen of the genera included have apparently not been documented before.
Lincoln Constance +2 more
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CHROMOSOME NUMBERS IN UMBELLIFERAE. II
American Journal of Botany, 1960Bell, C. Ritchie (U. of North Carolina, Chapel Hill.), and Lincoln Constance. Chromosome Numbers in Umbelliferae. II. Amer. Jour. Bot. 47(1) : 24‐32. Illus. 1960.–Chromosome numbers are reported for plants representing an additional 100 taxa of Umbelliferae.
C. Ritchie Bell, Lincoln Constance
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CHROMOSOME NUMBERS IN THE MYRTACEAE
American Journal of Botany, 1947THE MYRTACEAE have received comparatively little cytological attention, partly because of technical difficulties, and partly because the majority of species are relatively far removed from the centers of intensive study. Cytology in its more recent developments has proved its value in clarifving some of the problems of phylogeny, and it appeared likely
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1948
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Chromosome Numbers of Cerastium Species
Nature, 1950THE chromosomes of four species of Cerastium, namely, C. vulgatum, C. alpinum (including C. alpinum lanatum), C. arvense and C. perfoliatum, have been counted from root-tips of young seedlings. I give here a list of chromosome counts made by previous workers, none of which is of British material, together with my own counts.
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