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Karyotype Analysis in Three Varieties of Zea mays L.

Reeta verma & Kamini Kumar
University Department of Botany,
Ranchi University, Ranchi, Jharkhand, India
Received 20th December, 2010; Revised 15th January, 2011

Abstract : Zea mays L. belongs to family Poaceae and commonly known as Maize.Maize has great economic and medicinal value.For the present investigation,seeds of three varieties of Zea mays L. i.e. DMH-849, K-99 and Proagro-4212 were collected from local Seed Centre of Ranchi and karyotypic analysis were carried out. All the varieties were found to be diploid i.e. 2n=2x=20 chromosome number.The karyotype of all varieties showed ‘nearly median’ and ‘nearly submedian’chromosomes. Regarding the total chromatin length Zea mays var. Proagro-4212 was considered as primitive while Zea mays var. K-99 as advanced.


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