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Correlation and Path Coefficient Studies of Yield and Yield Attributing Characters in Panikachu, Colocasia Esculenta (l.) Schott

K. K. PAUL
Institute of Biological Sciences, Rajshahi University, Rajshahi -6205, Bangladesh

M. A. BARI
Institute of Biological Sciences, Rajshahi University, Rajshahi -6205, Bangladesh

S. C. DEBNATH
Institute of Biological Sciences, Rajshahi University, Rajshahi -6205, Bangladesh

Abstract/ Executive Summary:

The study was made to identify the association of yield and stolon characters and their direct and indirect effects in panikachu, Colocasia esculenta (L.) Schott. The stolon number, single stolon weight, total stolon weight, stolon length, length and breadth of corm and weight of corm showed positive correlation with yield per plant of which single stolon weight and corm breadth showed significant positive correlation with yield per plant at phenotypic level. Stolon breadth exhibited significant positive correlation with yield per plant at genotypic level. The residual effect in the genotypic level was 0.2205 which indicated this character contributed 78% of the yield. Results obtained suggested that maximum emphasis should be given on characters in selecting panikachu genotypes with higher yield per plant and the residual effect in phenotypic level was 0.4235 indicating 58% variability contributed by these characters.

Keywords: Colocasia esculenta, Genotypic correlation, Phenotypic, Path coefficient, Panikachu

Location: Barisal, Bogra, Dhaka, Jessore, Joypurhat, Munshiganj, Mymensingh, Rajshahi, Satkhira

Start Date: 01-01-2005

End Date: 30-06-2006

Program Area: Variety and Species

Commodity: Aroids

Objectives:

To find out nature and magnitude of relationships between yield and yield components and direct and indirect effects of the component characters on yield per plant of aqua edible aroid.

Methodology:

In 2005-2006 edible aroid accessions were collected from aroid growing districts of Barisal, Bogra, Dhaka, Jessore, Joypurhat, Munshiganj, Mymensingh, Rajshahi and Satkhira in Bangladesh. Collected 485 propagules, mainly plantlets and suckers, were maintained at the experimental farm of the Institute of Biological Sciences of Rajshahi University, Rajshahi, Bangladesh in 2006. For cultivation of this aroid all recommended agricultural practices were followed. The soil was part of Level Barind agroecological zone marked by sandy loam with pH 6.5. The experiment was set up in a Randomized Complete Block Design (RCBD) with three replication of plot. In each experimental plot size was 27 m² and plant propagules were planted with row to row and plant to plant spacing was 0.75 m and 0.60 m, respectively. Each plot covered with total 60 plantlets with six lines. The plantlets were sown on March, 2006. Two healthy selected propagules were planted per hill during plantation and finally a single healthy plant was maintained. The characters, stolon number (STN), stolon length (STL), stolon breadth (STB), single stolon weight (SSTW), total stolon weight (TSTW), corm length (CRL), corm breadth (CRB), corm weight (CRW) and yield per plant (YPP) were selected for data collection. When the vegetative growth is in climax then the agro-morphological data were collected. When plant and vegetative growth is very stunted, leaves become yellowish, dry and dropping then the quantitative parameters were observed and data were recorded. The collected data were analyzed following the biometrical techniques and using the SPSS and MS excel software. For the purpose of correlation and path coefficient analysis, the analysis of variance, the components of variances viz. genotypic variance (σ²g), phenotypic variance (σ² ) and environment variance (σ²e) and covariance between all possible pairs of characters separately were estimated.

Source of Information: Journal of Bangladesh Academy of Sciences, Vol. 37, No. 2, 131-137, 2013

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The stolon number, single stolon weight, total stolon weight, stolon length, length and breadth of corm and weight of corm showed positive correlation with yield per plant of which single stolon weight and corm breadth showed significant positive correlation with yield per plant at phenotypic level. Stolon breadth exhibited significant positive correlation with yield per plant at genotypic level. The residual effect in the genotypic level was 0.2205 which indicated this character contributed 78% of the yield. Results obtained suggested that maximum emphasis should be given on characters in selecting panikachu genotypes with higher yield per plant and the residual effect in phenotypic level was 0.4235 indicating 58% variability contributed by these characters.

Knowledge Management: Journal