scholarly journals Karyomorphology of Two Species of the Genus Spilanthes (Heliantheae-Asteraceae)

2020 ◽  
Vol 8 (4) ◽  
pp. 422-426
Author(s):  
Pushpa Karna Mallick
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Relative Length ◽  
Home Garden ◽  
Somatic Chromosome Number ◽  
Great Role ◽  
Mitotic Chromosomes ◽  
Central Nepal ◽  
Spilanthes Acmella ◽  
Karyotype Formula

In present investigation karyotype of mitotic chromosomes were determined, two species of the genus Spilanthes, namely Spilanthes acmella (L.) Murray and Spilanthes calva DC. from plants transplanted in earthen pots collected from different localities from Central Nepal in my home garden. The somatic chromosome number determined in present study were 2n=36 for both species, Spilanthes acmella (L.) Murray and Spilanthes calva DC. The chromosomes total length ranged from 0.6 to 1.6 µm in Spilanthes acmella (L.) Murray and 0.4 to 2.1µm in Spilanthes calva DC. The relative length ranged from 2.3 to 12.1 µm in the species Spilanthes calva and 2.0 to 8.5 µm in the species Spilanthes acmella. The Karyotype formula were M16+m2+sm16+st2 in Spilanthes calva DC. and M22 +sm14 in Spilanthes acmella (L.) Murray cytologically obtained by using 2% aceto-orcein. The karyotype of the two species shows considerable variation exists in morphology of chromosome and structure. The variation in karyomorphology shows evolved nature of this species which play a great role in evolution. Int. J. Appl. Sci. Biotechnol. Vol 8(4): 422-426

scholarly journals Cytology and biochemical estimation of Neptunia prostrate (Lamk.) Baillon: an ethnomedicinal aquatic legume of Tripura, North East India.

2016 ◽  
Vol 5 (09) ◽  
pp. 1424
Author(s):  
Anupam Guha* ◽  
Debanjali Bhattacharjee ◽  
Kanika Tripura ◽  
Abhijit Bhattacharya
Keyword(s):  
Rural Communities ◽  
Chromosome Number ◽  
Somatic Chromosome ◽  
Food Supplement ◽  
Chromosome Count ◽  
Somatic Chromosome Number ◽  
Common People ◽  
North East India ◽  
North East ◽  
Karyotype Formula

Neptunia prostrate (Lamk.) Baillon, commonly used as shoot vegetable in Tripura, North East India. Young shoots are used as vegetable in different forms of recipes of tribal and rural communities of this region. The utility of the vegetable as good source of protein and total amino acids with low level of phenolics and sugar clearly indicated its significance as useful health diet and alternative food supplement to the common people. The somatic chromosome number and karyomorphological details were also investigated in this plant. Somatic chromosome number was found to be 2n=56 with karyotype formula A2B42C12. The chromosome count and constancy of the karyotype with biochemical analysis recorded in the present study.

Chromosome morphology of Clematis, subsection Viornae (Ranunculaceae)

1976 ◽  
Vol 54 (10) ◽  
pp. 1135-1139 ◽  
Author(s):  
W. Michael Dennis
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Chromosome Complement ◽  
Chromosome Morphology ◽  
Terminal Region ◽  
Somatic Chromosome Number ◽  
Median Region ◽  
Acrocentric Chromosomes ◽  
Subterminal Region ◽  
Marked Stability

Cytological studies were made on the following taxa: C. addisonii, C. filifera, C. glaucophylla, C. pitcheri, C. reticulata, C. texensis, C. versicolor, and C. viorna. All species were found to have a somatic chromosome number of 16 with a uniform karyotype consisting of five pairs of metacentric chromosomes with centromeres in the median region and three pairs of acrocentric chromosomes, two pairs with centromeres in the terminal region and one pair with centromeres in the subterminal region. These findings agree with reports of chromosome number and karyotype for other species of Clematis and suggest a marked stability of chromosome complement in the genus.

Investigations of the inheritance of flower variegation in Mirabilis jalapa L. 3. Somatic chromosome number, 4. Distribution of the pigments and 5. Chromatographic studies

Euphytica ◽  
1975 ◽  
Vol 24 (1) ◽  
pp. 6-12 ◽  
Author(s):  
W. N. M. Van Kester ◽  
C. J. T. Spitters ◽  
L. Vosselman ◽  
J. M. M. Engels ◽  
A. C. Zeven
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Somatic Chromosome Number ◽  
Mirabilis Jalapa

A new species of Trigonella sect. Ellipticae (Leguminosae-Papilionoideae) from Iran, including cytogenetic and anatomical notes

Phytotaxa ◽  
2015 ◽  
Vol 202 (1) ◽  
pp. 26 ◽  
Author(s):  
Massoud Ranjbar ◽  
ZAHRA HAJMORADI
Keyword(s):  
New Species ◽  
Chromosome Number ◽  
Related Species ◽  
Somatic Chromosome ◽  
Base Number ◽  
Somatic Chromosome Number ◽  
Chromosome Counts ◽  
Closely Related Species ◽  
A New Species

A new species, Trigonella bakhtiarica, from the Iranian province Chahar Mahal Va Bakhtiari is described, illustrated and compared to its most closely related species, T. aphanoneura. Trigonella bakhtiarica has a longer corolla and differs in the shape, surface and size of its pods, which are taxonomically informative characters in Trigonella sect. Ellipticae. Chromosome counts and meiosis assays show that both species are diploid, and that their euploid plants possess a somatic chromosome number of 2n = 2x = 16, which is consistent with the predicted base number of x = 8.

Cytological studies of subterranean clover (Trifolium subterraneum L.)

1952 ◽  
Vol 3 (3) ◽  
pp. 300 ◽  
Author(s):  
JJ Yates ◽  
NH Brittan
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
The Other ◽  
Vicia Sativa ◽  
Somatic Chromosome Number ◽  
Separate Species ◽  
Apparent Relationship ◽  
Isolated Species

Somatic chromosome number and morphology in certain strains of subterranean clover and in species of several other fairly closely related genera have been observed. Dwalganup, Yarloop, Mt. Barker, Wenigup, Burnerang, and Red Leaf strains have each 16 fairly small chromosomes, the chromosome complexes being similar to one another and to that obtained by Wexelsen (1928) for the species. Palestine and Israel strains have each 12 large chromosomes, bearing no apparent relationship to those of the other strains but being the same in number and of a similar order of size to those found in Vicia sativa. Chromosome number and morphology may explain the failure to obtain intervarietal crosses involving Palestine, but not the low percentage of successful crosses between other strains. It is suggested that perhaps Palestine and Israel may be more correctly classed as strains of a separate species and that, with regard to their origin, Wexelsen's idea of mutational changes in isolated species offers probably the best explanation.

scholarly journals A report on new chromosome number of three Dioscorea species

2019 ◽  
Vol 6 (2) ◽  
pp. 147-150
Author(s):  
Chiranjit Paul ◽  
Bimal Debnath
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Chromosome Count ◽  
Somatic Chromosome Number ◽  
Chromosome Counts ◽  
North East India ◽  
North East ◽  
Forest Belts ◽  
Dioscorea Species ◽  
First Time

Chromosomal study conducted in nine species of Dioscorea from different forest belts of Tripura revealed that their somatic chromosome number ranged from 2n=40 to 2n=60. The record of 2n=40 chromosome in the sexual phenotypes of Dioscorea hamiltonii, Dioscorea glabra and Dioscorea pubera are the first time report from Tripura, North East India. Moreover the somatic chromosome counts of 2n=60 in Dioscorea pentaphylla would be attributed as a new cytotype. However at the respective ploidy level no difference in somatic chromosome count was observed between their sexes.

Chromosome Morphology in Kniphofia.

Bothalia ◽  
1960 ◽  
Vol 7 (2) ◽  
pp. 295-297 ◽  
Author(s):  
J. M. J De Wet
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Chromosome Morphology ◽  
Somatic Chromosome Number ◽  
Number Of Species

A number of species and varieties of the genus  Kniphofia (Liliaceae) were studied cytologically. The somatic chromosome number is  2n = 12 in all the species. This is also true in  Notosceptrum natalense Baker.

A NINETEEN-CHROMOSOME BARLEY PLANT

1958 ◽  
Vol 38 (1) ◽  
pp. 106-110
Author(s):  
A. Mochizuki ◽  
E. Reinbergs
Keyword(s):  
Chromosome Number ◽  
Somatic Chromosome ◽  
Barley Variety ◽  
Barley Plant ◽  
Somatic Chromosome Number

One plant with a somatic chromosome number of 19 was found in a population of 400 basically tetraploid plants of the barley variety O.A.C. 21. The morphology and cytology of this plant is described. Cytological observations indicate that the 19-chromosome plant was produced by the union of 2n−2 and n gametes.

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