African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Metroglyph analysis of maize (Zea mays L.) inbreds for preliminary classification and group constellation

D. Datta1*, B. K. Mukherjee2, N. S. Barua3 and S. P. Das4
1Directorate of Wheat Research, Regional Station, Flowerdale, Shimla, India. 2Genetics Division, Indian Agricultural Research Institute, New Delhi-110012, India. 3Department of Genetics and Plant Breeding, RARS, Gossaigaon-783360, India. 4ICAR Research Complex for NE Region, Tripura center, India.
Email: [email protected]

  •  Accepted: 12 November 2013
  •  Published: 21 November 2013

Abstract

When a large number of accessions are available it is often useful to represent them on two dimensional graph and form preliminary groups which are subsequently subjected to more detailed stratification for specific breeding purposes. In the present investigation inbreds were grouped in to clusters using metroglyph analysis. Index scores were assigned to each glyph to arrive at conclusions about the agronomic potential of the inbreds. The group constellation deviated from the one derived through D2 analysis. However, pictorial representation of inbreds as brought about by metroglyph analysis can be used as a measure of relative genetic distance among the inbreds.

Key words:  D2 statistic, genetic divergence, group constellation, metroglyph analysis.