The control of chiasma frequeney within a polyploid series in the genus Senecio (Compositae)

Genetica ◽  
1987 ◽  
Vol 72 (1) ◽  
pp. 37-41 ◽  
Author(s):  
R. Ingram ◽  
H. J. Noltie
Keyword(s):  
Polyploid Series

scholarly journals A POLYPLOID SERIES IN HOSTA

1934 ◽  
Vol 10 (2) ◽  
pp. 152-154 ◽  
Author(s):  
Yoshitaka IMAI ◽  
Benso KANNA
Keyword(s):  
Polyploid Series

CHROMOSOME NUMBER, VOLUME AND NUCLEAR VOLUME RELATIONSHIPS IN A POLYPLOID SERIES (2X-20X) OF THE GENUS RUMEX

1971 ◽  
Vol 13 (4) ◽  
pp. 842-863 ◽  
Author(s):  
S. Ichikawa ◽  
A. H. Sparrow ◽  
C. Frankton ◽  
Anne F. Nauman ◽  
E. B. Smith ◽  
...  
Keyword(s):  
Chromosome Number ◽  
Chromosome Numbers ◽  
Abrupt Change ◽  
Diploid Species ◽  
Nuclear Volume ◽  
Polyploid Series ◽  
Unidentified Species

Ninety-one acquisitions of the genus Rumex obtained from various sources were examined taxonomically and cytologically. These acquisitions included 36 species plus 2 unidentified species. The chromosome numbers counted were 2n = 14 (or 15), 16, 18, 20, 40, 42, 60, 80, 100, 120, 140, 160, ca. 170, 180 and ca. 200. The count of 2n = 180 made on one of the R. orbiculatus acquisitions is a new count for this genus, but other acquisitions had 160 and ca. 170. First counts were obtained for four species, R. frutescens (2n = 160), R. crystallinus (2n = 60), R. cristatus (2n = 80) and R. tenax (2n = 80). The count of 2n = 160 for R. frutescens is the highest chromosome number ever reported in the section Axillares. The chromosome numbers determined in R. palustris (2n = 60), R. confertus (2n = 100), R. arcticus (2n = 120) and R. aquaticus (2n = 140) differ from previously published counts. Our counts for eight other species support one of the previous counts where two or more counts are reported. It is shown that the species of the subgenus Acetosa sections Acetosa and Vesicarii and of the subgenus Platypodium have relatively large chromosomes, those of the subgenus Acetosa section Scutati and of the subgenus Acetosella have medium-sized chromosomes, and the members of the subgenus Rumex sections Axillares and Rumex have smaller chromosomes. The chromosomes of the diploid species of the section Rumex were larger than those of the polyploids (4x to 20x) of the same section. Within the section Rumex the log of nuclear volume increased with increasing ploidy, with an abrupt change (decrease) in slope between the 12x and 14x levels.

Variation of chromosomal complement in the Mexican plum Spondias purpurea L.: polyploid series in landraces cultivated by Mayan of Yucatan

Fruits ◽  
2019 ◽  
Vol 74 (4) ◽  
pp. 145-149
Author(s):  
M. M. Ferrer ◽  
◽  
M. d.R. Ruenes-Morales ◽  
P.I. Montañez-Escalante ◽  
J.G. Rivero-Manzanilla ◽  
...  
Keyword(s):  
Chromosomal Complement ◽  
Polyploid Series ◽  
Spondias Purpurea

A study of the flavonoids of the Potentilla pensylvanica complex in North America

1977 ◽  
Vol 55 (4) ◽  
pp. 476-479 ◽  
Author(s):  
B. L. Kohli ◽  
K. E. Denford
Keyword(s):  
North America ◽  
Flavonoid Glycosides ◽  
Polyploid Series

The major flavonoid complement of leaves of the polyploid series Potentilla finitima Kohli & Packer (2n = 14), P. pensylvanica L. (2n = 28), and P. bipinnatifida Hook. (2n = 56) has been determined. Eleven flavonoid glycosides have been identified and their distribution within the polyploid series plotted and discussed. Evidence is presented for the occurrence of a 'recombinant' flavonoid in the species P. pensylvanica L.

scholarly journals COMPARATIVE STUDIES OF FUNCTIONS OF MITOCHONDRIA FROM A POLYPLOID SERIES OF WHEAT

Genetics ◽  
1970 ◽  
Vol 66 (3) ◽  
pp. 497-503
Author(s):  
Hari K Srivastava ◽  
Igor V Sarkissian
Keyword(s):  
Comparative Studies ◽  
Polyploid Series

ENDOMITOSIS IN A POLYPLOID SERIES OF FERN PROTHALLI

1961 ◽  
Vol 52 (4) ◽  
pp. 139-144 ◽  
Author(s):  
CARL R. PARTANEN
Keyword(s):  
Polyploid Series

scholarly journals Cytological Studies of Nymphaea Species available in Bangladesh

1970 ◽  
Vol 15 ◽  
pp. 7-13 ◽  
Author(s):  
A Hossain ◽  
G Kabir ◽  
MM Ud-deen ◽  
AMS Alam
Keyword(s):  
Key Words ◽  
Chromosome Doubling ◽  
White Flower ◽  
Chromosome Counts ◽  
Polyploid Series

The present investigation was undertaken in order to study the somatic karyotypes of four species of Nymphaea available in Bangladesh. Karyotypes of four species of Nymphaea revealed that most of the chromosomes were metacentric indicating their primitive nature and chromosome counts revealed a polyploid series of tetraploid, pentaploid and hexaploid based on X=14. Findings of the present study indicated that Nymphaea pubescens is a hexaploid (6X=84, white flower) which might have originated by chromosome doubling of Nymphaea daubeniana (3X=42) while Nymphaea rubra and Nymphaea nouchali (Type-1) are tetraploid (4X=56) species. Key words: Nymphaea, karyotype   doi: 10.3329/jbs.v15i0.2197 J. bio-sci. 15: 7-13, 2007  

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