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Morphometric Characterization of Coconut Germplasm Conserved at BARI

M. D. Sarkar
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

S. Choudhury
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

N. Islam
Department of Horticulture, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M.N. Islam
Horticultural Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Pomology Research Field, HRC of BARI, Gazipur, Bangladesh during the period from September 2011 to February 2012 to evaluate the morphometric characterization of coconut germplasm. PCA revealed that days to spathe opening, days to male phase and number of nuts per palm contributed for 66.73% of the observed variation. Twenty seven entries of coconut were grouped into 7 clusters. The largest cluster VII included 9 palms, cluster VI, V and II included 8, 4 and 3 palms respectively while cluster I, III and IV included 1 palm. The inter-cluster values were maximum in between clusters III and VII (82.455) while it was minimum in between II and IV (22.351). The intra-cluster distance was maximum in cluster VII (13.210) while the clusters I, III and IV showed no distance. So, the clusters between III and VII could be used as germplasm for future breeding.

Keywords: Morphometric characterization, Coconut, PCA, Cluster analysis

Location: Pomology Research Field, HRC of BARI, Gazipur, Bangladesh

Start Date: 00-09-2011

End Date: 00-02-2012

Program Area: Variety and Species

Commodity: Coconut

Objectives:

To evaluate the morphometric characterization of coconut germplasm

Methodology:

The experiment was conducted at the Pomology Research Field, Horticulture Research Centre of Bangladesh Agricultural Research Institute (BARI), Gazipur under the agro-ecological zone of Modhupur Tract (AEZ No. 28) during the period from September 2011 to February 2012. Soil of the experimental field was silty clay loam in texture and acidic in nature. Coconut germplasm were collected from different Agro Ecological Zone of Bangladesh which was planted at BARI campus in 1998-2001 among which 27 palms of different population was selected. Coconut palms were about 10 years. Data on bole category, stem, leaf, flowers and nut were recorded and subjected to diversity analysis by SPSS-12 computer packages. Principal component analysis (PCA) and clustering were carried to assess the pattern of morphological variation. To assess the relationships within genotypes or classes of the population, a dendrogram was developed.

Source of Information: International Journal of Sustainable Agriculture 4 (3): 52-56, (2012)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

PCA and cluster analysis revealed that inflorescence and nut characters are the most important components contributing to the observed variation. So, nut yield and quality improvement in coconut would be achieved through selection of these characters. But these collections not yet reached in full bearing stage. So, further studies should be conducted to evaluate the nut characters, bearing habit and yield of selected entries of coconut.

Knowledge Management: Journal