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Variations in Agronomic Traits of Soybean Genotypes

M. S. A. Khan
Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Bangladesh

M. A. Karim
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh

M. M. Haque
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh

A. J. M. S. Karim
Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh

M. A. K. Mian
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the experimental site of Agronomy Department of the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur during January to June 2010 to evaluate some important agronomic traits of one hundred and fifteen genotypes of soybean to screen out high yielding soybean genotypes. Considerable genetic variability was observed in the 115 germplasm. Depending on the variability in quantitative traits, the genotypes were grouped in six clusters. The genotypes which have greater morphological similarity were grouped in clusters. The results indicated the presence of high degree of divergence in the genotypes. The clustering pattern of the 115 soybean genotypes in six groups and their inter-group distances revealed that genotypes in Cluster III comprised of BARI Soybean 5, G00083, BARI Soybean 6, G00342, BD 2338, BD 2355, BD 2329, BD 2340, AGS 95, G00056, AGS 129, BD 2336, BGH 02026, BGM 02093, Galarsum, BD 2350, G00084, BD 2331, G00103 indicated better performance which could be marked for the selection of yield potential genotypes through further evaluation.

Keywords: Soybean, Genotypes, Germplasm.

Location: Agronomy Department, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Salna, Gazipur

Start Date: 00-01-2010

End Date: 00-06-2010

Program Area: Variety and Species

Commodity: Soybean

Objectives:

To select soybean genotypes with high yield potential.

Methodology:

The study comprised of 115 genotypes of soybean including two released varieties viz., BARI Soybean 5 and BARI Soybean 6 as check. The genotypes were collected from BARI and AVRDC. Seeds were sown in January 16, 2010 and harvested from April 22 to June 20, 2010 due to differences in life span of the genotypes. The seeds of soybean genotypes were sown in lines of one meter length maintaining 10 cm distances. Row to row spacing was 40 cm, maintaining 10 plants per meter. Fertilizers were applied at the rate of 28-30-60-18 kg ha^-1 of NPKS in the form of urea, TSP, MOP and Gypsum, respectively (FRG, 2005). Half of urea and full doses of other fertilizers were applied at the time of final land preparation. The remaining half of urea was top dressed at flowering stage followed by irrigation. After sowing one-irrigation was applied for uniform emergence and thereafter three additional irrigations were given to the plots for meeting the water at different critical stages of soybean. Soybean plants emerged on January 24. Admire 200SL @ 1 ml liter -1 of water was sprayed at 10 and 25 DAE to control Jassids and white flies. Ripcord 10 EC @ 1 ml liter -1 of water was sprayed at 45 and 60 DAE to control leaf roller and pod borer. Leaf SPAD values, leaf width and breadth were recorded at 45 DAE and plant height was measured at 75 DAE. After harvest, yield and yield contributing characters were recorded. Average values of morphological and yield contributing characters viz., seed yield linear meter^-1, seed yield plant^-1, 100-seed weight, number of pods plant^-1, number of seeds pod^-1 , number of branches plant^-1, plant height, leaf SPAD value, leaf length, leaf width and days to maturity were analysed for multivariate analysis by using GENESTAT program.

Source of Information: SAARC J. Agri., 12(2): 90-100 (2014)

Article Link (Online Journal): http://www.banglajol.info/index.php/SJA/article/view/21921/15036

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The 115 soybean genotypes. The genotypes were grouped in six clusters on the basis of their variability in quantitative traits. The results concluded that the Cluster III comprised of BARI Soybean 5, G00083, BARI Soybean 6, G00342, BD 2338, BD 2355, BD 2329, BD 2340, AGS 95, G00056, AGS 129, BD 2336, BGH 02026, BGM 02093, Galarsum, BD 2350, G00084, BD 2331, G00103 genotypes performed better than others, because of its better quantitative traits and higher inter-group distances.

Knowledge Management: Journal