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Adaptative Trial of Cowpea Genotypes (2019--2020)

AKMM ALAM
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

R. UDDIN
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

R UDDIN CHOUDHURY
Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Abstract/ Executive Summary:

An adaptive experiment was implemented at RARS, Rahmatpur, Barishal during the Rabi season of 2019-20 to evaluate the adaptive quality of eight selected cowpea germplasms with one check variety in southern agro-climatic conditions. Eight selected cowpea germplasms viz.CPL-1-17, CPL-2-17, CPL-3-17, CPL-3-17, CPL-4-17, CPL-5-17, CPL-6-17, CPL-7-17, CPL-8-17 including one check variety BARI Felon 1 were evaluated in the trial. Results showed that all the characters under this study were significantly different among the genotypes except plant population/plot, plant height, and hundred seed weight. The germplasm CPL-7-17 had produced the maximums seed yield (1761.7 kg/ha) which was statistically identical with CPL-8-17 (1621.2 kg/ha) and CPL-2-17 (1603.7 kg/ha) whereas the lowest seed yield can be observed CPL-5-17 and CPL-1-17 (587 kg/ha and 618.9 kg/ha respectively).

Keywords: Cowpea, Germplasm, Adaptive trial

Location: RARS, Rahmatpur, Barishal

Start Date: 00-00-2019

End Date: 00-00-2020

Program Area: Variety and Species

Commodity: Cowpea

Objectives:

The trial has been undertaken to evaluate advanced cowpea germplasms to make a suggestion for cowpea varietal improvement in southern agro-climatic conditions.

Methodology:

The experiment was conducted at the experimental field of Regional Agricultural Research Station (RARS), Rahmatpur, Barishal in the rabi season, 2019-20 to evaluate the performance of eight selected cowpea germplasms with the check variety BARI Felon 1. Eight selected cowpea germplasms viz.CPL-1-17, CPL-2-17, CPL-3-17, CPL-3-17, CPL-4-17, CPL-5-17, CPL-6-17, CPL-7-17, CPL-8-17 including one check variety BARI Felon 1 were evaluated in the trial. The experiment was laid out in Randomized Complete Block Design with three replications. The unit plot was 4 rows and 3m long with spacing 50cm×5cm. Seeds were sown in the rows on 21^st December 2019. Intercultural operations e.g. Irrigation, weeding etc. were done in time. Data on yield contributing characters were recorded from 10 randomly selected plants from each plot. Grain yield (kg/ha) was recorded from the whole plot. Data were analyzed statistically by using R software at a 5% level of significance

Source of Information: Annual Research Report 2019-2020, Pulses Research Centre, RARS, BARI, Ishurdi, Pabna

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The tested cowpea germplasms had differed significantly from one to another in respect of growth and yield contributing performances under field conditions except for plant population/plot, plant height, and hundred seed weight. Plant population/plot did not differ significantly among the germplasm. Early switching to the reproductive stage can be observed from CPL-5-17 (72 days) whereas CPL-6-17 had required the maximum days (82) to reach the 50% flowering stage. Rainfall at the early stage had prolonged the vegetative stage causing delayed flowering. The number of pods/plants had differed significantly among the germplasms. CPL-7-17 had produced the highest number of pods/plant (42.60) whereas CPL-1-17 had produced the least number of pods/plant (16.10). The seed yield was ranged from 587 to 1761.7 kg/ha. The highest seed yield (1761.7 kg/ha) was produced by the entry CPL-7-17 which was statistically identical with CPL-2-17 (1603.7 kg/ha) and the lowest seed yield was obtained in CPL-5-17 and CPL-1-17 (587 kg/ha and 618.9 kg/ha respectively). With the findings of the present study, it could be concluded that the germplasm CPL-7-17 had produced the maximums seed yield (1761.7 kg/ha) which was statistically identical with CPL-8-17 and CPL-2-17(1603.7 and 1621.2 kg/ha). So, these advanced lines should be considered for further trial for more evaluation.

Knowledge Management: Report/Proceedings