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Advancing S1 to S2 Generation of Field Corn and Pop Corn

A.H. AKHI
Plant Breeding Division, BARI

A.N.M.S. KARIM
Plant Breeding Division, BARI

S. BEGUM
Plant Breeding Division, BARI

M.K. ALAM
Plant Breeding Division, BARI

S.H. OMY
Plant Breeding Division, BARI

Abstract/ Executive Summary:

The balanced bulk seeds of S₁lines of Set I: Titan, Set II: 9120, Set III: 50 S₁lines of Field corn (early and dwarf), Set IV: 50 S₁lines of Field corn (medium height and high yield goal), Set V: American pop corn were advanced to S₂ generation in order to develop superior inbred lines. Variations were observed in different morphological traits among the S₁ lines in each set. The selected plants were selfed and finally 45, 40, and 80 selfed ears were selected from Titan, 9120, American pop corn, respectively. Selected ears were dried properly and kept them separately in store for advancing them to S₃generation in the next rabi season.

Keywords: Silking, Selfed, Feld corn, Pop corn

Location: Joydebpur

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Variety and Species

Commodity: Maize

Objectives:

To advance the first selfed generartion to second selfed generation of field corn and pop corn

Methodology:

The experiment consisted five sets of S₁ lines of different maize varieties (Set I: Titan, Set II: 9120, Set III: 50 S₁lines of Field corn (early and dwarf, Set IV: 50 S₁lines of Field corn (medium height and high yield goal), Set V: American pop corn. Seeds of set I and II were sown on 17 November, set III and IV on 9 November and set V on 21 November, at Joydebpur during rabi 2014-15. Each material was sown in one row 4 m long plot. Spacing was 60×20 cm (one plant/hill). Fertilizers were applied @ 120, 35, 70, 40, 5 kg/ha of N, P, K, S and Zn, respectively. Standard agronomic practices were taken as and when necessary. During flowering, healthy disease free desirable plants were selected and selfed carefully by hand pollination. Data on days to tasseling and silking, plant and ear height, number of selfed ear were recorded and statistically analyzed.

Source of Information: Annual Research Report, Plant Breeding Division, BARI-2014-15

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Mean performances of different characters studied of three sets (Set I:Titan, Set II:9120 and Set V:American pop corn) and 50 S₁maize lines of Field Corn (Set III) and (Set IV) were selfed and evaluated. The selfed plants were harvested individually and dried properly. Finally 45, 40, and 80 selfed ears from Titan, 9120 and American pop corn, were selected respectively and stored separately. Fifty S₁lines for early and dwarf line & another 50 S₁lines for medium height and high yield were advanced from 5^th cycle of base population. Individual cob was selfed from each line.Finally 45, 40, and 80 selfed ears were selected from Titan, 9120 and American pop corn, respectively. One cob from each line of 50 S₁ lines at field corn (set III & set IV) were selected. All selected materials were stored separately for advancing them to S₃generation following ear to row method in the next rabi season

Knowledge Management: Report/Proceedings