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Variabilities and Performance of Bushbean (phaseolus Vulgaris L.) Germplasm in the Hilly Area

S. N. Mozumder
Senior Scientific Officer
Agricultural Research Station, Raikhali, Rangamati

S. M. L. Rahman
Senior Scientific Officer
Citrus Research Station, Jaintapur, Sylhet.

M. O. Kaisar
Senior Scientific Officer
RARS, Ishurdi, Pabna

Abstract/ Executive Summary:

The variability and performance of 30 Bush bean (Phaseolus vulgaris L) germplasm were studied at the Agricultural Research Station, Raikhali, Rangamati in two consequent cropping seasons of 2002-03 and 2003-04. A lot of variability observed among the germplasms in respect of its growth period, plant height, number of branch, number and weight of pods/plant, pod & seed characteristics pod and seed yield. The size of seeds were smaller to bigger (15.3-50.6g/100 seeds), shape- long, ovate, flat, round and colour of seeds were black, red, white, brick coloured, mottled, mosaic, brown etc. Number and weight of pods per plant ranges 7.0 to 32.6 and 52.0-162.0g respectively. The germplasm PL156 gave the maximum number of pods/plant (32.0) and pod yield (27.0t/ha) in green stage while HAB465 gave the lowest pod yield (8.76 t/ha) among 30 germplasm.

Keywords: Bush bean, Evaluation, Germplasm, Performance.

Location: Agricultural Research Station, Raikhali, Rangamati

Start Date: 01-10-2002

End Date: 31-03-2004

Program Area: Variety and Species

Commodity: Plant

Objectives:

To assess the comparative performance of 30 germplasm (native & foreign) collected from various places and organizations for selection of the promising line(s) providing high yielding, good quality pods and seeds.

Methodology:

An evaluation trial with 30 dwarf French bean (Bush bean) lines was conducted at Agricultural Research Station, Raikhali, Rangamati in two consecutive cropping season (winter) of 2002-03 and 2003-04. A randomized compete block design was followed with three replications. In 2004-05 secondary evaluation was conducted in the same design with seven selected lines and three replications. The seeds of 30 Bushbean germplasm were collected from different places and organizations in Bangladesh, Japan, Thailand and Netherlands. The experiment was conducted in a RCB design with three replications. The soil of experimental field was sandy loam having pH value 5.5 and deficient in organic matter. Raised beds were prepared to save the crop from high rainfall and water logging. Two adjacent beds were considered as a unit plot. The seeds were sown on third week of November every year directly in the field maintaining 30x10cm spacing in 5x1.2m beds accommodating 200 plants per bed. The spacing was suggested by Mozumder et al. (2003) and Ali (1989) reported that French bean genotypes gave maximum yield at 30x10cm spacing. After well preparation by subsequent ploughing and laddering, the experimental land was manured and fertilized with cowdung, N, P₂O₅, and K₂O @ 10000, 100, 150 and 100 kg/ha, respectively (Mozumder et al, 2005). Nitrogen, P and K were applied in the form of urea, TSP and MP, respectively. The entire amount of cowdung, TSP and half of urea and MP were applied at the time of final land preparation and rest of each urea and MP was applied at 30 days after planting. Two seeds per pit were sown and kept one seedling per pit after thinning at 15 DAS. Intercultural operations such as weeding, mulching and irrigation were done as and when necessary. No control measures were taken because there were no severe insect pest infestations in the crop. Green pods were harvested about 12-15 days after flowering when it was succulent, soft and delicious. Harvesting of green edible pods of one bed from each plot were started from mid February and continued up to mid March. The remaining bed of each plot was kept for seed production and harvested after drying the pods at last week of March. Data were recorded from 20 randomly selected plants for individual plant performance and from each bed for per hectare yield. Data on all yield and yield contributing characters were recorded, calculated and statistically analyzed as per standard procedure to assess the result.

Source of Information: Bangladesh J. Hort. 30: 51-55.

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 15000/-

Total Budget (Tk.) : 15000/-

Achievement/Findings:

From two years evaluation, seven lines were selected for further performance trial. In 2004-05 secondary evaluation was conducted with seven selected lines and tabulated the results. The line Pl0156 produced higher number of pods per plant (28.6) and maximum pod and seed yield (28.88 t/ha, and 2.89t/ha). The line PL21 also yielded better (27.83t/ha) but its previous performance was not so good as PL156. After three years evaluation the line PL156 was identified as promising one due to its continuous better performance and narrow straight pods among the evaluated 30 Bush bean lines in the Eastern hilly environment.

Knowledge Management: Journal