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Genetic Diversity of Eggplant Germplasm During Winter Season (2016 – 2017)

AKM Quamruzzaman
Horticulture Research Centre, BARI, Joydebpur, Gazipur Bangladesh

Ferdouse Islam
Horticulture Research Centre, BARI, Joydebpur, Gazipur-1701

H. E. M. Khairul Mazed

Abstract/ Executive Summary:

The study was conducted at the experimental field of Olericulture Division, Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur during 2016-17 to assess the extent of genetic diversity among 23 eggplant germplasm. The collected germplasm originating from different local and exotic sources were subjected to cluster analysis. The germplasm were constellated into five distinct groups with the range of 1 germplasm in cluster I to 9 germplasm in cluster III. The inter-cluster distance in all cases was larger than the intracluster distance. Maximum inter-cluster distance (33.05) was observed between germplasm of cluster I and V followed by cluster I and IV (29.00) and minimum was found between germplasm of cluster IV and V (4.84). The highest intra cluster value (0.953) was observed in cluster V. Mean performance of different clusters revealed that Cluster I recorded the lowest mean for days to 1st harvest (113.00 days), number of marketable fruit (19.00), fruit length (12.00 cm) and highest mean for average fruit weight (246.84g), fruit diameter (8.50cm), plant height at 1^st harvest (90.00 cm), plant height at last harvest (135.0cm), fruit yield (60.9t/ha). Therefore, inbreds belong to cluster I, cluster IV and cluster V would be given higher priority for crossing in future eggplant hybridization programme.

Keywords: Genetic diversity, Eggplant, Germplasm

Location: Olericulture Division of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur, Bangladesh

Start Date: 00-00-2016

End Date: 00-00-2017

Program Area: Variety and Species

Commodity: Brinjal

Objectives:

To assess the extent of genetic diversity in 23 eggplant germplasm which will help to select prospective parents to develop transgressive segregate.

Methodology:

The experiment was conducted at the Olericulture Division of Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI) during 2016-17 with 23 germplasm of eggplant. The seeds of these germplasm were sown on the seedbed on 01 October, 2016. Thirty two days old seedlings were transplanted in the main field on 02 November, 2016. The experiment was laid out in a RCB design without replication. The unit plot size was 7.0 ´0.7 m and 10 plants were accommodated in a plot with a plant spacing of 70 cm apart in single row maintaining a row to row distance of 70 cm with 30cm drain. The land was fertilized with cowdung –N-P-K-S-Zn-B @ 10,000-170-50-125- 18-4.3-1.70 kg/ha, respectively. One third of the cow dung and half of P and full of S, Zn and B were applied during final land preparation. Rest of cow- dung and P and 1/3 of K were applied as basal in pit. One fifth of urea and K were applied after 20 days of transplanting. After that, rest of urea and K were applied in equal four installments at 20 days interval. The intercultural operations (weeding, irrigation, insecticide spray etc.) were done as and when necessary. Data on days to 1st harvest, number of marketable fruit, average fruit weight (g), fruit length (cm), fruit diameter (cm), plant height at last harvest (cm), plant height at 1^st harvest (cm), fruit yield (t/ha), FSB infested fruit (%)were recorded from five randomly selected plants per germplasm. Plot means for 10 quantitative characters 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 germplasm were grouped into clusters following the method suggested by Tocher (Rao, 1952). Genetic diversity was studied following Mahalanobis’s (1936) generalized distance (D²) extended by Rao (1952). Statistical analyses were carried out using Genstat 5 software.

Source of Information: Annual Research Report 2016 – 2017, Horticulture Research Centre, BARI, Joydebpur, Gazipur Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering group distance and other yield contributing performance, the inter-genotypic crosses between the members of cluster I and V and cluster I and IV would exhibit high heterosis and is also likely to produce new recombinants with desired traits. Therefore, inbreds belong to cluster I, cluster IV and cluster V will be given higher priority for crossing in future eggplant hybridization programme.

Knowledge Management: Report/Proceedings