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Production of Single Cross Maize Hybrid

S. Ahmed
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

M. Z. A. Talukdar
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

A. N. M. S. Karim
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

M. R. Ali
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701.

Abstract/ Executive Summary:

Two sets of field corn single crosses were made following 7 x 7 half diallel fashion to generate 21 F₁'s for each set. The parents were mainly selected based on water logged tolerant (set-Ill) and high yield (set-V) basis in order to develop water logged tolerant and high yielding hybrids. The produced two sets of single crosses would be evaluated in the coming season.

Keywords: Production, Single cross, Maize, Hybrid

Location: Plant Breeding Division, Bangladesh Agricultural Research Institute

Start Date: 00-00-2012

End Date: 00-00-2012

Program Area: Variety and Species

Commodity: Maize

Objectives:

To develop excess soil moisture tolerant as well as high yielding hybrids.

Methodology:

The experimental material consisted of two sets of diverged 7 water logged tolerant (set-Ill) and 7 high yielding (set-V) inbreds. In set-I: BIL-79, BIL-31, E-174, E-55, E-177, E-105 and E-78 and in set-Il: BML-4, BML-36, BIL-106, BIL-114, BIL-28, BIL-28 and BIL-31 inbred lines were included and crossed in a diallel fashion excluding reciprocals to produce 21 F₁'s in each set. Seeds of inbred lines of each set were sown in three different dates (for set-Ill: 28 November, 02 & 07 December 2012 and for set-V: 28 November, 03 and 05 December 2012) for synchronization. Each inbred line was sown in one row plot with 5m long. Spacing was maintained at 60 cm x 20 cm (one plant/hill). Fertilizers were applied @ 120, 80, 80, 20, 5 and 1 kg/ha of N, P₂O₅, K₂O, S, Zn and B, respectively. Standard agronomic practices were followed to raise good crop. Undesirable plants from the each line were rouged out before flowering. Crossing was made by hand pollination in desirable plants and lines of each set to fulfill the desired combinations. Ethyl alcohol was used for hand washing during crossing. At flowering time, female and male organ (silk & tassel) of the plants of female and male parents were covered by special silk and tassel bag. Each set produced 21 F₁'s. At the same time maintenance and seed increase of the inbred parents were done.

Source of Information: Annual Research Report 2012-13, Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, September-2013, pp: 98-99.

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The produced F₁s seeds from two sets of crossing were harvested and processed carefully. After processing the seeds were kept separately and stored for next year evaluation.

Knowledge Management: Report/Proceedings