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Correlation and Path-coefficient Analysis of Pummelo

Md. Sarowar Alam
Plant BreedingDivision, Regional Agricultural Research Station (RARS), BARI, Akbarpur, Moulvibazar

Md. Saidur Rahman
Horticulture Division, RARS, BARI, Akbarpur, Moulvibazar and PhD fellow, Dept.of Horticulture, BAU, Mymensingh

Md. Golam Rahman
HorticultureDivision, Hill Agricultural Research Station, BARI, Khagrachari

Md. Mizanur Rahman
Dept. Horticulture, RARS, BARI, Jamalpur

Sabina Yesmin
Biotechnology Division, RARS, BARI, Akbarpur, Moulvibazar

Md. Zashim Uddin
Head, RARS, BARI, Akbarpur, Moulvibazar, Bangladesh

Abstract/ Executive Summary:

The study was conducted at Regional Agricultural Research Station, Akbarpur, Moulvibazar to determine the correlation along with their direct and indirect effects through path coefficient analys is as to estimate the contribution of most important traits towards yield for pummelo.Fruit yield per plant showed highly significant positive correlation with number of fruits per plant (r =0.91) and individual fruit weight (r =0.55). Significant positive relationship were observed between fruit yield per plant and fruit breadth (r =0.38), number of seeds per fruit (r =0.35), weight of seeds per fruit (r =0.38). Highly significant positive relationships were recorded for individual fruit weight and fruit breadth (r =0.8), number of seeds per fruit and weight of seeds per fruit (r =0.83) and also for plant height and canopy spreading at north-south direction (r = 0.51).Number of segments per fruit showed highly significant positive interrelation with number of seeds per fruit (r =0.52) and significant positive relationship with TSS (r =0.39) and weight of seeds per fruit (r =0.38). It was observed that number of fruits per plant had maximum positive direct effect on fruit yield per plant (0.8353) and individual fruit weight showed positive direct effect on fruit yield per plant (0.5027). Fruit breadth exerted negative direct effect (-0.1302) on fruit yield per plant but it had positive significant correlation with fruit yield per plant (r = 0.38). Negative direct effect was mainly counter balanced by individual positive effects of different characters.Correlation and path coefficient analysis indicated that number of fruits per plant, individual fruit weight and fruit breadth were the most important contributors to fruit yield per plant in pummelo.

Keywords: C. maxima, Traits, Correlation, Path-coefficients analysis

Location: Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Akbarpur, Moulvibazar

Start Date: 00-00-2012

End Date: 00-00-2014

Program Area: Variety and Species

Commodity: Pummelo

Objectives:

The present study was undertaken to know the correlation coefficient along with their direct and indirect effects through path coefficient analysis in pummelo for selecting the most important contributing characters towards yield.

Methodology:

The experiment was conducted at Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Akbarpur, Moulvibazar duringthe years 2012 to 2014. The experiment was performed with thirty three pummelo genotypes where each plant was considered as a replication. The distance from plant to plant was 5m and row to row was 5m. Individual plants were fertilized with cowdung (20 kg), urea (500 g), TSP (500 g), MP (500 g), gypsum (200 g), Zinc (4 g), boron (4 g) in two equal splits, one at the onset and other at the end of rainy season. (FRG, 2012). Irrigation, weeding and other crop management practices were followed as recommended by Ullah et al. (2006) to have a good healthy plant. Data on plant height (m), canopy spreading (m), number of flowers per cluster, number of fruits per plant, individual fruit weight (g), fruit length (cm) and breadth (cm), number of segments per fruit, number and weight (g) of seeds per fruit, edible percentage, % Brix (TSS) and yield per plant (kg) were recorded.The correlation coefficients were calculated as per Snedecor (1957). Path coefficients were estimated according to Dewey and Lu (1959), where fruit yield per plant (kg.) was kept as resultant variable and other contributing characters as causal variables. Correlation and Path analysis were conducted by using R (version 3.1.2) computer software .

Source of Information: J. Biosci. Agric. Res. 08(01): 718-725

Article Link (Online Journal): DOI: 10.18801/jbar.080116.85

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Correlation and path coefficient analysis revealed that number of fruits per plant, individual fruit weight and fruit breadth were the most important contributors to fruit yield per plant in pummelo. Thus, emphasis should be given for the selection of these characters for the improvement of pummelo.

Knowledge Management: Journal