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12th EuroBiotechnology Congress

Alicante, Spain

M N Shiva Kameshwari

M N Shiva Kameshwari

Bangalore University, India

Title: Genome size in Urginea species (Hyacinthaceae)


Biography: M N Shiva Kameshwari


The species of Urginea such as U. indica, U. wightii and U. polyphylla are known for phenotypic and genotypic plasticity. The 2C values of Urginea indica in 5 accessions include 3 diploids with 2n=20, one tetraploid 2n=40 and a pentaploid 2n=50. In U. wightii 3 accessions with 2n=20 diploid, one Aneuploid 2n=36 and one mixoploid with diploid and tetraploid 2n=20 and 40. In U. polyphylla 2n=54 have been detected. Intraspecific variations have been noticed in the genome size is significant. In diploids the highest C value (1C=45.78 pg) being found in the accession-846 lowest (1C=27.7 pg) in accession-843, an intermediate one (1C=38.45 pg in accession-835. In Tetraploid (1C=51.53 pg) accession-840 while in pentaploids (1C=38.91 pg) accession-842. In U. wightii complex diploids with 1C=49.24 pg which is highest accession-839 and in myxoploid 1C=38.49 pg in accession-848 and anueploid 1C=37.56 pg) accession-825 were reported and the factors contributing to such variations in genome size are discussed.