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

Genetic Variability and Character Association for Agronomic Traits in Hybrid Rice (oryza Sativa L.)

M. J. Hasan
Hybrid Rice Section Bangladesh Rice Research Institute, Gazipur 1706, Bangladesh.

M. U. Kulsum
Hybrid Rice Section Bangladesh Rice Research Institute, Gazipur 1706, Bangladesh.

Hybrid Rice Section Bangladesh Rice Research Institute Gazipur 1706, Bangladesh.
Hybrid Rice Section Bangladesh Rice Research Institute, Gazipur 1706, Bangladesh.

A. S. M. Masuduzzaman
Hybrid Rice Section Bangladesh Rice Research Institute Gazipur 1706, Bangladesh.

M. S. Ramesha
Rice Breeder, CSISA project, Barwale Foundation, Hyderabad, India

Abstract/ Executive Summary:

Twenty four hybrid rice varieties of diverse origin were studied for genetic variability, correlation and path analysis under medium high land of Gazipur. The PCV values were greater than GCV, revealing little influence of environment in character expression. High values of heritability along with moderate genetic advance were observed for panicle/m²^, days to 50% flowering and plant height. Grain yield showed positive significant association with number of effective tillers/hill, panicle/m², spikelet fertility and thousand grain weight at both genotypic and phenotypic levels. Same traits had highest significant positive effect on yield.

Keywords: Genetic variability, Correlation, Path analysis, Hybrid rice

Location: BRRI, Gazipur

Start Date: 00-00-2010

End Date: 00-00-2010

Program Area: Variety and Species

Commodity: Rice

Objectives:

To know variability and correlation among yield and its contributing characters using 24 rice hybrids under direct seeded condition in a medium high land.

Methodology:

The experiment was conducted at Bangladesh Rice Research Institute, Gazipur, during Aus season, 2010. The trial was conducted with twenty four hybrid rice varieties collected from different parts of Bangladesh. The trial was set in a randomized complete block design with three replications. In this experiment, sprouted seeds were sown on well prepared puddle land. Direct seeding was done by using Drum Seeder. Unit plot size was 8 m². Thinning was done at proper time. Fertilizer was applied @ 150: 100: 70: 60: 10kg/ ha Urea, TSP, MP, Gypsum and ZnSO₄ respectively. Basal: ¼ Urea, Full dose of TSP, Gypsum, ZnSO₄_, 2/3MP; Top dressing: ¼ Urea (15-20 DAT), ¼ Urea (35-40 DAT), ¼ Urea (booting stage) and 1/3 MP at 2nd top dress of urea. Water management; weeding and insects & pest control was done when it is required. Data was collected from ten randomly selected plants from each plot on plant height (cm), number of effective tillers/hill, number of panicles/m2 flag leaf length, days to 50% flowering, spike let fertility (%), panicle length (cm), thousand grain weight (TGW) and plot yield (t/ha). The analysis of variance was done using MSTAT C software. Genotypic and phenotypic coefficients of variation were estimated as per Singh and Chaudhary (1979). The broad sense heritability and genetic advance in percent of mean were calculated as suggested by Jonson et al. (1955). Normal Pearson’s correlation was calculated using SPSS 10.0 software. Genotypic and phenotypic correlation coefficients were calculated following Miller et al. (1958). Path coefficient analysis was estimated according to the method suggested by Dewey and Lu (1959).

Source of Information: Bangladesh J. Pl. Breed. Genet, 24(1): 45-51

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The PCV values were greater than GCV, revealing little influence of environment in character expression. High values of heritability along with moderate genetic advance were observed for panicle/m², days to 50% flowering and plant height. Grain yield showed positive significant association with number of effective tillers/hill, panicle/m²^,spikelet fertility and thousand grain weight at both genotypic and phenotypic levels. Same traits had highest significant positive effect on yield.

Knowledge Management: Journal