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D2 Analysis in Early Maturity Hull-less Barley (hordeum Vulgare L.)

A. K. M. M. Alam
Plant Breeding Division,Bangladesh Agricultural Research Institute (BARI), Gazipur

M. Begum
Plant Breeding Division,Bangladesh Agricultural Research Institute (BARI), Gazipur

M. J. A. Chaudhury
Wheat Research Center, Bangladesh Agricultural Research Institute (BARI), Gazipur

N. Naher
Department of Agricultural Botany, Patuakhali Science & Technology University, Patuakhali

R. Gomes
Research Division, BARI, Gazipur, Bangladesh

Abstract/ Executive Summary:

Genetic diversity was assessed in 73 genotypes of barley (Hordeum vulgare L) by using D₂ analysis. The genotypes were grouped into six clusters. Cluster I comprised 21 genotypes which was followed by cluster II and cluster V. Cluster with small statistical distances considered less diverse than those with large distances. The intra cluster value was maximum in cluster V and minimum in cluster I. Cluster IV showed the highest mean values for 1000 grain weight and grain yield per plant while cluster III revealed the lowest mean value for days to maturity. The characters responsible for genetic divergence were days to maturity, grain per spike and 1000 grain weight.

Keywords: Genetic diversity, Early maturity, Barley

Location: Farm of Bangladesh Agricultural Research Institute, Gazipur

Start Date: 00-00-2005

End Date: 00-00-2006

Program Area: Variety and Species

Commodity: Barley

Objectives:

To estimate the extent of genetic diversity in exotic early maturity hull-less barley genotypes available in Bangladesh.

Methodology:

This trial consisted with seventy three early maturity barley (Hordeum vaulgare L.) genotypes collected from ICARDA, Alleppo, Syria. This experiment was conducted at Bangladesh Agricultural Research Institute, Gazipur during the rabi season of 2005-2006. Seeds of each entry were sown in a single row of 2.5 m long with 25 cm spacing. Fertilizers N, P₂O₅, K₂O were applied at the rate of 100, 60, 40 kg/ha, respectively. Intercultural operations were done as and when necessary. Data were recorded from ten randomly selected plants from each plot for seven-quantitative characters viz., days to maturity, plant height (cm), number of tiller per plant, spike length (cm), number of grain per spike, 1000 grain weight (g) and yield per plant. These data were used to statistical analysis. Genetic diversity was studied following Mahalanobis’s generalized distance (D₂) extended by Rao (1952). Statistical analysis was done by using GENSTAT program.

Source of Information: Int. J. Sustain. Crop Prod. 2(1): 15-17, 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The greater divergence in the genotypes due to these characters in the respective clusters would offer a good scope for the improvement of barley through rational selection.

Knowledge Management: Journal