Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Genetic Divergence Analysis in Eggplant (solanum Melongena L.)

A.K.M. QUAMRUZZAMAN
Olericulture Division, Horticultural Research Centre, BARI, Joydebpur, Gazipur 1701

M.A. RASHID
Olericulture Division, Horticultural Research Centre, BARI, Joydebpur, Gazipur 1701

S. AHMAD
Olericulture Division, Horticultural Research Centre, BARI, Joydebpur, Gazipur 1701

M. MONIRUZZAMAN4
Agricultural Research Station, Raikhali, Rangamati, Bangladesh

Abstract/ Executive Summary:

Genetic divergence among 19 eggplant genotypes was estimated using Mahalanobis’s D2 statistic. Altogether five clusters were formed. Cluster I contained the highest number of genotypes (7) and cluster IV and V contained the lowest (2). The pattern of distribution of genotypes from different geographical locations into five clusters was random, demonstrating that geographical isolation may not be the only factor causing genetic diversity. The highest intra-cluster distance was observed for cluster V (1.067) and the lowest for cluster III (0.916). The highest inter-cluster distance was observed between cluster IV and V (10.748). Cluster V recorded the highest mean for plant height at last harvest (cm), leaf blade length (cm), leaf blade diameter (cm), leaf pedicel length (cm), fruit pedicel length (cm), prickle on calyx. Whereas, number of branches per plant, fruit diametre (cm), individual fruit weight (g), fruit yield (t/ha) and prickle on fruit pedicel were in cluster II with the highest means. Therefore, more emphasis should be given on cluster V for selecting genotypes as parents for crossing with the genotypes of cluster II which may produce new recombinants with desired traits.

Keywords: Genetic diversity, Eggplant (Solanum melongena L.) and cluster analysis.

Location: Bangladesh Agricultural Research Institute (BARI), Gazipur

Start Date: 00-00-2005

End Date: 00-00-2006

Program Area: Variety and Species

Commodity: Brinjal

Objectives:

To estimate the nature and magnitude of genetic diversity in some local eggplant genotypes in Bangladesh condition.

Methodology:

The experiment was conducted at the Olericulture Division of Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI) during the winter season of 2005-06 with 19 genotypes of eggplant representing samples from different locations. The seeds of these germplasm were sown on the seedbed on 25 September 2005. Thirty-five days old seedlings were transplanted in the main field on 30 October 2005. The experiment was laid out in a randomized complete block design with three replications. The unit plot size was 7.5x 0.70m and 10 plants were accommodated in a plot with a plant spacing of 75cm maintaining a row distance of 70cm. Data were recorded from five randomly selected plants from each plot for days to 50% flowering, days to harvest, plant height at last harvest (cm), number of branches per plant, fruit length (cm), fruit diameter (cm), number of fruits per plant, individual fruit weight (g), fruit yield (t/ha), infestation by eggplant fruit and shoot borer (EFSB) (%), leaf blade length (cm), leaf blade diameter (cm), leaf pedicel length (cm), fruit pedicel length (cm), prickle on fruit pedicel and prickle on calyx. Plot means over the replications were used for the statistical analysis. Genetic diversity was studied following Mahalanobis’s (1936) generalized distance (D2 ) extended by Rao (1952). Based on the D2 values, the genotypes were grouped into clusters following the method suggested by Tocher (Rao, 1952). Intra and inter cluster distances were calculated by the methods of Singh and Chaudhury (1985). Statistical analyses were carried out using Genstat 5 software.

Source of Information: Bangladesh J. Agril. Res. 34(4) : 705-712, December 2009, ISSN 0258-7122

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest intra-cluster distance was observed for cluster V (1.067) and the lowest for cluster III (0.916). The highest inter-cluster distance was observed between cluster IV and V (10.748). Cluster V recorded the highest mean for plant height at last harvest (cm), leaf blade length (cm), leaf blade diameter (cm), leaf pedicel length (cm), fruit pedicel length (cm), prickle on calyx. Whereas, number of branches per plant, fruit diametre (cm), individual fruit weight (g), fruit yield (t/ha) and prickle on fruit pedicel were in cluster II with the highest means. Therefore, more emphasis should be given on cluster V for selecting genotypes as parents for crossing with the genotypes of cluster II which may produce new recombinants with desired traits.

Knowledge Management: Journal