Cytogenetics of two endemic Barleria species (Acanthaceae) from the northern Western Ghats (India)

@article{Joshi2016CytogeneticsOT,
  title={Cytogenetics of two endemic Barleria species (Acanthaceae) from the northern Western Ghats (India)},
  author={Hemant Joshi and Pradnya B. Yadav and Manoj Madhwanand Lekhak and Shrirang Yadav},
  journal={Caryologia},
  year={2016},
  volume={69},
  pages={170 - 174}
}
Abstract Chromosome studies have been carried out on two endemic species of the northern Western Ghats, India, viz. Barleria lawii and B. sepalosa. Both species showed 2n = 40 mitotic chromosomes. Chromosomes had median region centromeres and both species exhibited a karyotype formula of 20m. Karyotypes were moderately symmetrical and fell into category 4b of Stebbins’ asymmetry classes. Values for the intrachromosomal index (A1) for Barleria lawii and B. sepalosa were 0.23 and 0.28… 
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21 References

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