Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Combining Ability for Grain Yield and Its Components Ofsubtropical Maize (zea Mays L.) Inbred Lines

M A L Akanda
Plant Breeding Division, Bangladesh Agricultural Research Institute, Regional Agricultural Research Station. Ishurdi, Pabna, Bangladesh

M F Alam
Department of Botany, Rajshahi University, Rajshahi, Bangladesh

M M Hossain
Department of Botany, Rajshahi University, Rajshahi, Bangladesh

Abstract/ Executive Summary:

Combining ability analysis was carried out in a diallel cross involving seven subtropical maize inbred lines for grain yield and its components. The expression of these characters was found to be controlled by both additive and non-additive genes. However, additive genetic effects were preponderance for the expression of days to silk, plant and ear height, and ear length and ear girth, while in case of grain yield, number of kernel rows/ear, number of kernels/row and 1000-kernel weight non-additive gene action was more important in controlling their expression. The inbred lines LmlY 15, LmlY II, LmlYOH and LmlY I0 were found to be good general combiner for grain yield and other yield components. Based on per se performance and SCA effect, the superior cross combinations LmlY IO x LmiYIS. LmiYII x LmlY15. LmlY09 x Lml Y15 and LmlY08 x LmlY I0 were identified as promising hybrids.

Keywords: Maize, Inbred line, Diallel cross. Combining ability

Location: Plant Breeding Division, Bangladesh Agricultural Research Institute, Regional Agricultural Research Station. Ishurdi

Start Date: 01-11-2003

End Date: 30-03-2004

Program Area: Variety and Species

Commodity: Maize

Objectives:

To identify subtropical superior parent inbred lines and their hybrid combinations for grain yield and its component s based on combining ability in a 7x7 diallel cross of maize .

Methodology:

Seven subtropical maize inbred lines vizs LmlYOR, LmlY09, LmlY 10, LmlYII. LmiY12. LmlYI 3 and LmlYI5 received from the international Maize and Wheal Improvement Center (CIMMYT). Mexico were crossed in a 7x7 diallel fashion excluding reciprocals at the Regional Agricultural Research Station, BARI. lshurdi. Pabna, Bangladesh during rabi season (2002-03). Crossing was done by hand pollination. Twenty-one F₁ hybrid s obtained from diallel cross were evaluated at the Regional Agricultural Research Station. BARl, lshurdi, Pahna. Bangladesh during rabi season. Twenty-one F₁ hybrid s obtained from diallel cross were evaluated at the Regional Agricultural Research Station. BARl, lshurdi, Pahna. Bangladesh during rabi season (2003-04) following randornized complete block design with three replications. The unit plot size was 5.0 x 3.0 m maintaining a spacing of 75 x 25 cm (one plant/hill).

Source of Information: Ann. Bangladesh Agric (2007) 11(1): 77-85

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From this study, based on per se performance and SCA effects, the cross combination s LmlYIO x LmlYI5, LmlYII x LmlY15, LmlY09 x LmlY15 and LmlY08 x LmiYIO were identified as superior hybrids. The inbred lines LmlY15, LmiY II , LmlY08 and LmlYIO were found to be good genera l combiners for grain yield and other yield components. The inbred LmlY15 having same parent of three crosses indicating that it has high heritable potential for grain yield .

Knowledge Management: Journal