African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12488

Full Length Research Paper

Cytomorphological studies of two mulberry varieties (Moraceae)

K. H. Venkatesh*
  • K. H. Venkatesh*
  • Department of studies in Sericulture, Bangalore University, Bangalore-56006, India.
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S. Shivaswamy
  • S. Shivaswamy
  • Department of Sericulture, Bharati College, Bharati Nagara, Mandya -571422 Karnataka, India.
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Munirajappa
  • Munirajappa
  • Department of studies in Sericulture, Bangalore University, Bangalore-56006, India.
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  •  Received: 10 January 2014
  •  Accepted: 29 April 2014
  •  Published: 28 May 2014

Abstract

Two mulberry varieties, namely, S34 and Tr-10 were selected for cytomorphological studies. Stomatal frequency, somatic chromosome number, ploidy level and meiotic behaviour were studied for these varieties. S34 is diploid with 2n=28 and Tr-10 is triploid with 2n=42 chromosomes. Meiosis was irregular. Various anomalies like univalents, bivalents, trivalents laggards, loose association and unequal separation of chromosomes were observed in some pollen mother cells (PMCs) studied. Stomatal frequency was found to be lesser in triploid when compared to diploid variety.

 

Key words: Mulberry (Morus spp.), stomatal frequency, diploid, triploid, mitosis, meiosis.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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