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Nature of Gene Action in Barley (hordeum Vulgare L.)

M.M. Rohman
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

R. Sultana
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

R. Podder
Pulse Research Center, Bangladesh Agricultural Research Institute, Ishurdi, Bangladesh.

A.T.M. Tanjimul Islam
Training and Communication, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

M. Kamrul Islam
Floriculture Division, Horticulture Research Center, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

M.S. Islam
OFRD, Patuakhali, Bangladesh.

Abstract/ Executive Summary:

Five barley cultivars, viz., BARI barley-2, BBL-9402-43-1, BBL-9402-12-2, K-163, K-351 and IBYT/97-4 were mated at BARI, Joydebpur, Gazipur in a diallel fashion excluding reciprocals during rabi 2003-04 in order to identify genetic architecture of different important traits of barley for further improvement of grain yield. A 6 x 6 diallel cross (excluding reciprocal) of barley (Hordeum vulgare L.) dictated both additive and non-additive components were important but dominance components were more predominant than additive components in controlling the inheritance of all the characters under study. The asymmetric distribution of dominant and recessive alleles at loci was found for all the characters. At least 3 groups of genes were found in controlling the dominance in yield. The highest heritability (89%) in narrow sense was observed in 1000 grain weight. Vr-Wr graph indicated over dominance and genetic diversity among the parents.

Keywords: Hordeum vulgare, Gene action, Yield

Location: BARI, Joydebpur, Gazipur

Start Date: 00-00-2003

End Date: 00-00-2005

Program Area: Variety and Species

Commodity: Barley

Objectives:

To identify genetic architecture of different important traits of barley for further improvement of grain yield.

Methodology:

Five barley cultivars, viz., BARI barley-2, BBL-9402-43-1, BBL-9402-12-2, K-163, K-351 and IBYT/97-4 were mated at BARI, Joydebpur, Gazipur in a diallel fashion excluding reciprocals during rabi 2003-04. The parents and their 15 F₁s were grown in a Randomized Block Design with three replications under normal sowing condition during rabi 2004-05 at Bangladesh Agricultural Research Institute, Joydebpur, Gazipur. The individual plot comprised of a single row of 5 m long. The spacing between rows and that between plants in a row was 30 and 10 cm, respectively. Irrigation and other cultural operations were done as per need. Observations were recorded on ten randomly selected plants from each plot for days to maturity, Plant height (cm), tiller/plant, grain/spike, 1000 grain wt. (g) and grain yield/plant (g).

Source of Information: Asian Journal of Plant Sciences Volume 5, Number 2, 170-173, 2006

Article Link (Online Journal): DOI: 10.3923/ajps.2006.170.173, URL: http://scialert.net/abstract/?doi=ajps.2006.170.173

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It was observed from the graphical and the component of variance analysis that dominance effect was involved for all the characters under study. Therefore, it might be concluded that the heterosis breeding would be advantageous to get higher production in barley.

Knowledge Management: Journal