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Correlation and Path Coefficient Analysis of Some Exotic Early Maturing Rice (oryza Satival.) Lines

Md. Manik Sarker
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh.

Lutful Hassan
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh.

Mirza Mofazzal Islam
Biotechnology Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh.

Md. Mamunur Rashid
Farm Management Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh.

Shahjahan Seraj
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh.

Abstract/ Executive Summary:

Correlation and path coefficient analyses of thirty two (32) exotic early maturing rice (Oryza sativa L.) lines were evaluated through their yield and yield contributing characters. Almost all the lines exhibited significance difference for different characters. The results indicated that days to 50% flowering (0.42*), days to maturity (0.35*), total tillers hill^-1 (0.71**), effective tillers hill^-1 (0.82**) had positive and significant association with yield plant^-1 for phenotypic correlation coefficient; whereas, unfilled grains panicle^-1(-0.19*) had significantly negative correlation with yield. For phenotypic correlation coefficient, the days to 50% flowering (0.50*), days to maturity (0.39*), total tillers hill^-1 (0.80**), effective tillers hill^-1 (0.88**) showed positive and significant association with yield plant^-1, on the other hand unfilled grains panicle^-1 (-0.19*) had significantly negative correlation with yield. Path analysis revealed that days to maturity (0.87**), total number of tillers hill^-1(0.25**), effective number of tillers hill^-1 (0.48**), panicle length (0.68**) and number of filled grain panicle^-1 (1.29**) had positive direct effects on yield plant^-1. Results suggest days to maturity, total number of tillers hill^-1, and effective number of tillers hill^-1 may be used as reliable criteria for improving yield of early maturing rice.

Keywords: Correlation, Path Analysis, Early Maturing, Rice and Yield

Location: The experimental field of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2202

Start Date: 00-07-2012

End Date: 00-11-2012

Program Area: Variety and Species

Commodity: Rice

Objectives:

The objective of the study was to study the correlation coefficient and path coefficient analysis of early maturing rice lines for evolving yield and yield contributing characters.

Methodology:

The study was conducted from July 2012 to November 2012 in the experimental field of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh-2202. Geographically the experimental area is located at 24⁰75 N latitude and 90⁰5 E longitudes at the elevation of 18 m above the sea level. Experimental materials Thirty one early maturing rice lines along with check variety Binadhan-7 were used for the experiments. Mutant variety, Binadhan-7 is the popular early maturing variety.The seeds of the rice lines were collected from International Network for Genetic Evaluation of Rice (INGER), International Rice Research Institute (IRRI), Philippines. Experimental Design The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The row to row and plant to plant distances were 20 cm and 15 cm, respectively. The recommended fertilizer dose was 220 (Kg/ha) Urea, 100 (Kg/ha) TSP and 70 (Kg/ha) MOP. Collection of data The following data Plant height (cm), days to 50% flowering, days to maturity, total tillers and effective tillers hill^-1, filled and unfilled grains panicle^-1, 1000 seed weight (g), yield plant^-1(g) were collected from randomly selected of 5 plants from each unit plot. Statistical analysis Analysis of variance was performed using the plant breeding statistical program (PLBSTAT, Version 2N, Utz 2007) with the following model: Yij= gi+ rj+ εij Where, Yij= observation of genotype i in replication j;gi= effects of genotype I;rj= effects of replication jandεij= the residual error of genotype i in replicate j. Formula used for estimation of genetic and phenotypic parameters. The genotypic and phenotypic correlations were estimation by the formula suggested by Miller et al. (1985).

Source of Information: Journal of Bioscience and Agriculture Research (JBAR) , Vol. 01 (01): 01-07, 2014

Article Link (Online Journal): Published online: 08.05.2014

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The performance of different exotic rice lines for grain yield and different yield contributing characters were evaluated. There were significant variations among the genotypes for the characters plant height, days to flowering, days to maturity, total tillers hill^-1, effective tillers hill^-1, filled grains panicle^-1, panicle length, unfilled grains panicle-1,yield plant-1(g) and 1000 seed weight. Days to 50% lowering had significant positive correlation with 1000 seed weight and yield plant^-1,and significant negative correlation with unfilled grains panicle^-1 but non-significant positive correlation with days to maturity, plant height, total effective tillers hill^-1, effective tillers hill^-1 and filled grains panicle^-1.From the results of path analysis it is evident that direct effects contributed by days to maturity, total number of tillers hill^-1, effective number of tillers hill^-1, panicle length and number of filled grains panicle^-1 an these five characters contributed maximum for yield plant^-1.

Knowledge Management: Journal