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Comparative Yield Trial of Imported and Local Maize Hybrids

M. Shalim Uddin
Scientific Officer
Plant Breeding Division BARI, Gazipur

M. A. Islam
Scientific Officer
Plant Breeding Division RARS, Hathazari

Abstract/ Executive Summary:

The present study assessed GEI and stability for grain yield, days to tasseling, days to silking, plant height and ear height with 29 genotypes across three different locations of Bangladesh during 2007-08. Significant variation for genotypes (G), environment (E) and GEI were found for all the characters. Considering the mean, bi, S²di and determination for linear regression model (r²) all the genotypes showed different response of adaptability under different environmental conditions. Among the genotypes, Arjun (Safal), Y-367 NK-40, NK-46, HIC 999 and THI-555 exhibited higher grain yield; bi~1, S2di~0 and smaller r²indicated that the hybrids are stable across the environment. The grain yield of hybrid BHM-5, 900M, Uttran, Pacific 60 and Pacific-983 are more than 10.0 ton/ha. bi~1, S2di~0 and r2 values are medium indicating moderately responsiveness to environment but suitable for favourable environments. The hybrid KH 101 and Modhu-2 had bi value significantly different from the unity with non significant S²di value and large coefficient of determination indicating high responsiveness of the hybrid but suitable for favourable environments.

Keywords: Maize, Comparative, Trial, Yield, Hybrid

Location: Gazipur, Hathazari, Ishurdi

Start Date: 12-12-2007

End Date: 08-05-2008

Program Area: Variety and Species

Commodity: Maize

Objectives:

To evaluate the quality as well as the yield potentiality of the imported hybrids

Methodology:

This experiment included 20 hybrids imported by different seed companies and two BARI developed hybrids BHM-3 and BHM-5. The experiment was laid out in Randomized Complete Block Design with 3 replications. Seeds of each entry were sown in 2 rows, 5m long plot with 75cm and 20 cm spacing between rows and plants, respectively. Seeds were sown on 11 Dec, 2007. One healthy seedling per hill was kept after thinning. Fertilizers were applied @ 250, 120, 120, 40 and 5 kg/ha of N, P₂O₅, K₂O, S and Zn, respectively. Standard agronomic practices including irrigation were done to raise a healthy crop and plant protection measures were taken as and when necessary. Data on yield and other important characters were recorded at appropriate stage. All the recorded data were processed and analyzed statistically using Cropstat 6.1 program.

Source of Information: Annual Research Report 2007-08, Plant Breeding Division, BARI

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 30,000/-

Total Budget (Tk.) : 30,000/-

Achievement/Findings:

Among the genotypes, Arjun (Safal), Y-367 NK-40, NK-46, HIC 999 and THI-555 exhibited the higher grain yield; bi~1, S²di~0 and smaller r²indicated that the hybrids are stable across the environment. The grain yield of hybrid BHM-5, 900M, Uttran, Pacific 60 and Pacific-983 are more than 10.0 ton/ha, bi~1, S²di~0 and r² values are medium indicating moderately responsiveness to environment but suitable for favorable environments. Considering the yield potentiality and stability parameter seven genotypes; Arjun (Safal), Y-367 NK-40, NK-46, HIC 999, THI-555, BHM-5, 900M, Uttran, Pacific 60 and Pacific-983 were found promising across locations.

Knowledge Management: Report/Proceedings