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Phenotypic Diversity of Coconut Germplasm Conserved at Different Stations of BARI

MD. NAZIRUL ISLAM
Senior Scientific Officer (Hort)
RARS, Jessore

MD. AMJAD HOSSAIN
Senior Scientific Officer (Hort)
RARS, Jessore

MD. SHARAF
Scientitic Officer
HRC,RARS,Rahamtpur, Barisal, Bangladesh

Abstract/ Executive Summary:

Diversity of coconut germplasm being conserved at different Regional and Sub stations of the Bangladesh Agricultural Research Institute (BARI) was estimated during 2001-2002. Diversity indices (D²) ranged from 1068.96 to 171.93. Maximum diversity was observed between BARI Narikel-2 and Rahmatpur Yellow Dwarf. Genotypes of Regional Agricultural Research Station, Jessore and BARI Narikel-2 were found morphologically similar. Population under conservation at Jamalpur and lshwardi stations were found close to BAR! Narikel-1. Similar relationships among the genotypes were reflected when they were grouped into several clusters. Out of six clusters, the members of cluster II were homogenous, while that of cluster IV showed heterogenicity.

Keywords: Phenotypic diversity, Coconut germplasm

Location: Six Research Stations of BARI

Start Date: 00-00-2001

End Date: 00-00-2002

Program Area: Variety and Species

Commodity: Coconut

Objectives:

To estimate phenotypic diversity of the conserved coconut germplasm of BARI.

Methodology:

The study was conducted on 9 populations at 6 Research Stations of BARI during 2001 -2002, The populations were named according to the conservation sites. Data on stem, leaf, flowers, fruit (whole nut and dehusked nut, liquid endosperm), solid endosperm (kernel) were recorded from 30 sampled plants followed by IPGRI(1996) manual. The collected data were summarized and subjected to diversity analysis by SAS 6.12 and SPSS-9.5 computer packages. Principal component analysis (PCA) and clustering were carried to assess the pattern of morphological variation. To assess cohesiveness of the population, a dendrogram of the populations was developed.

Source of Information: Bangladesh J . Agril. Res. 34(1) : 25-31, March 2009

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Diversity indices (D²) ranged from 1068.96 to 171.93. Maximum diversity was observed between BARI Narikel-2 and Rahmatpur Yellow Dwarf. Genotypes of Regional Agricultural Research Station, Jessore and BARI Narikel-2 were found morphologically similar. Population under conservation at Jamalpur and lshwardi stations were found close to BARI Narikel-1. Similar relationships among the genotypes were reflected when they were grouped into several clusters. Out of six clusters, the members of cluster II were homogenous, while that of cluster IV showed heterogenicity.

Knowledge Management: Journal