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Screening of Mungbean (vigna Radiata L. Wilczek) Genotypes Under Nutrient Stress in Soil

M. A. Razzaque
Senior Scientific Officer
Training and Communication Wing, Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh.

M. A. Haque
Professor
Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh.

M. M. Rahman
Scientific officer
Training and Communication Wing, BARI, Gazipur, Bangladesh.

M. M. Bazzaz
Senior Scientific Officer
Agricultural Research Station, Dinajpur, BARI, Bangladesh.

M. S. A. Khan
Senior Scientific Officer
Agronomy Division, BARI, Gazipur, Bangladesh.

Abstract/ Executive Summary:

A pot experiment was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur during kharif season of 2010 to investigate the genetic divergence of some mungbean genotypes under nutrient stress condition using Mahalanobis’ statistic (D²) and principal component analysis. Analysis of variance showed significant difference for all the characters. Results of multivariate analysis revealed that 200 mungbean genotypes formed five clusters at nutrient stress condition where cluster II had the maximum genotypes (83) followed by cluster I (65), cluster III (30), cluster IV (9) and then cluster V (13). The highest intra-cluster distance was observed between cluster IV containing lowest 9 genotype and cluster V containing 13 genotypes. The highest inter-cluster distance was observed between cluster IV and III and lowest was observed between cluster V and Cluster I. Cluster III had the highest cluster mean for total dry matter, root dry mass, pods per plant, seeds per pod, 1000 seed weight and seed yield. Considering cluster distance and other agronomic performance the genotypes IPSA 1, IPSA 12, IPSA 5 and others genotypes from cluster III may be considered for better performance under nutrient stress condition.

Keywords: Mungbean, Nutrient stress, Cluster analysis, Seed yield

Location: Bangbandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur

Start Date: 00-08-2010

End Date: 00-11-2010

Program Area: Variety and Species

Commodity: Mungbean

Objectives:

To identifying potential ones by screening a large number of mungbean genotypes under nutrient stress soil.

Methodology:

A pot experiment was carried out at Bangbandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur during the kharif season (August – November) of 2010. The soil used in this experiment belonged to Collected to charland area. Four samples were collected from bulk volume to determine physical and chemical properties of soil. Textural classes of the soil sample were determined by hydrometer method. Organic carbon of the soil sample was determined by wet digestion method to estimate organic matter. Total nitrogen was determined by Kjeldahl method and available phosphorus was determined by percloric digestion method and other nutrient elements were measured as per respective method. Physical and chemical properties of soil are presented in this experiment. The experimental pots were filled with 12 kg of soil. No fertilizer was used in the pots to maintain soil as nutrient stress environment. A total of 200 mungbean genotypes were collected from Department of Agronomy, BSMRAU and seeds sown on 31 August, 2010. The experiment was laid out in complete randomized design with four replications. Initially four plants were grown up to measure the physiological characters. One pot was considered as one replication and finally one plant was considered. All agronomic practices like weeding, irrigation and mulching were done as and when necessary. Insect pest was controlled by spraying admire @ 0.5 ml litre^-1 of water during the entire growth period of the crop. The crop was harvested at full maturity. Harvesting was done for pod picking by hand twice one on 31 October and another on 13 November in 2010. In Last harvest dry matter partitioning was measured. Data on plant height, growth, nodule number, yield and yield components of mungbean genotypes were recorded. Plant height was considered as the height from ground level to the longest leaf of the plant. For dry matter determination shoots and roots were oven dried at 70°C to constant weight and the dry weights were taken. Yield and yield contributing characters viz. number of pods per plant, seeds per pod and 1000 seeds weight and seed yield per plant were recorded. Tocher’s method was followed to determine the group constellation. Canonical variate analysis was performed as per Rao (1964) to confirm the results of cluster D² analysis. Mean data for each character was subjected to both univariate and multivariate analysis. Univariate analysis of the individual characters (analysis of variance) was done by computer using MSTAT-C program. Genetic diversity of 200 mungbean genotypes at nutrient stress was analyzed using GENSTAT 5.13 soft were program.

Source of Information: Bangladesh J. Agril. Res. 41(2): 377-386, June 2016 ISSN 0258-7122 (Print), 2408-8293 (Online)

Article Link (Online Journal): DOI: http://dx.doi.org/10.3329/bjar.v41i2.28239

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results indicated that the plant height and the number of pods per plant had maximum contribution to the genetic divergence among the genotypes. Considering the cluster distance, cluster mean and other agronomic performances the genotypes IPSA 1, IPSA 5, IPSA 12 and other genotypes from cluster III might be considered as better for nutrient stress soil.

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