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Genetic Analysis of Some Yield Contributing and Quality Characters in Spring Wheat (triticum Aestivum)

M.A. Rahman
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi, Pabna, Bangladesh.

N.A. Siddquie
On-Farm Research Division, ARS, BARI, Bogra, Bangladesh.

M.Robiul Alam
On-Farm Research Division, ARS, BARI, Bogra, Bangladesh.

A.S.M.M.R. Khan
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi, Pabna, Bangladesh.

M.S. Alam
Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Ishurdi, Pabna, Bangladesh.

Abstract/ Executive Summary:

Genetic analysis of yield and quality characters in spring wheat was studied in seven cultivars and their F₁s obtained from a dialed cross without reciprocals at Bangladesh Agricultural University, Mymensingh. Graphical analysis revealed the presence of epistasis for the characters plant height, spikes per plant, spike length, grains per spike, 1000-grains weight, grain yield per plant and protein content. Partial dominance was showed by the characters days to maturity, plant height, grains per spike, 1000-grains weight and protein content. On the other hand the characters spikes per plant and spike length were controlled by over dominance. Among these gene actions partial dominance could easily be exploited through conventional breeding.

Keywords: Wheat, Yield and quality characters, Gene action, Vr/Wr graph

Location: Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-2000

End Date: 00-00-2001

Program Area: Variety and Species

Commodity: Wheat

Objectives:

To study yield and quality characters in spring wheat using seven diverse spring wheat varieties.

Methodology:

Seven varieties of spring wheat (Triticum aestivum) Sonalika, Gaurab, Saurav, Mayoor, Aghrani, Pavan and Chyria-3 were crossed in all possible combination excluding reciprocals. The 21 F₁s and the seven parents were grown in a randomized complete block design (RCBD) with three replications at the field laboratory of the Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh, during rabi season of 2000-2001. Each genotype was grown in a single row plot of 1.5 m long in each replication. The seeds were sown keeping the she space 25 cm between the rows and 5 cm between the plants of the same row. Observation on seven yield contributing and a quality characters viz., days to maturity, plant height, spikes per plant, spike length , grains per spike, 1000-grains weight and grain yield per plant were recorded on 10 random plants excluding border ones. Protein content was determined in the laboratory by multiplying the total nitrogen content. Total nitrogen was determined by Micro-Kjeldahl method.

Source of Information: Asian Journal of Plant Sciences, 2(3): 277-282, 2003 (ISSN 1682-3974))

Article Link (Online Journal): http://scialert.net/fulltext/?doi=ajps.2003.277.282&org=11

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Therefore, the characters days to maturity, plant height, grains per spike, 1000-grains weight and protein content could be improved through bulk or pedigree selection practiced in the segregating generations. Since, there was non additive gene action for grain yield per plant, hence selection in early segregating generation would not be fruitful. Selection for this character is suggested in later generation after fixation of the alleles.

Knowledge Management: Journal