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Genetic Diversity of Eggplant Germplasm During Winter Season

AKM Quamruzzaman
Horticulture Research Centre, BARI, Joydebpur, Gazipur-1701

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

M. Nazim Uddin
Horticulture Research Centre, BARI, Joydebpur, Gazipur-1701

M. H. Al-Mamun
Horticulture Research Centre, BARI, Joydebpur, Gazipur-1701

Abstract/ Executive Summary:

The study was conducted with seventeen eggplant germplasm at the experimental field of Olericulture Division, Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur during 2015-16. The collected germplasm originating from different local and exotic sources were subjected to cluster analysis. The germplasm were constellated into four distinct groups with the range of 3 germplasm in cluster II to 6 germplasm each in cluster I. The inter-cluster distance in all cases was larger than the intra-cluster distance. Maximum inter-cluster distance (14.547) was observed between germplasm of cluster II and III followed by cluster II and III (13.569) and minimum was found between germplasm of cluster I and IV (5.830). The highest intra cluster value (1.29) was observed in cluster III. Mean performance of different clusters revealed that cluster I recorded the highest fruit weight/ plant (4.00kg), fruit diameter (8.65 cm), average fruit weight (164.45g), fruit yield (52.00t/ha). Therefore, inbreeds belong to cluster I, cluster II and cluster III would be given higher priority for crossing in future eggplant hybridization programme.

Keywords: Genetic diversity; Eggplant; Germplasm, D2 values,

Location: Olericulture Division of Horticulture Research Centre, BARI, Joydebpur, Gazipur-1701

Start Date: 00-00-2015

End Date: 00-00-2016

Program Area: Variety and Species

Commodity: Brinjal

Objectives:

To assess the extent of genetic diversity in 17 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 2015-16 with 17 germplasm of eggplant. It may be mentioned that these germplasm were evaluated in the last season, but the performance was not good due to poor management. That is why this year the study was conducted again to observe the original potentiality. The seeds of these germplasm were sown on the seedbed on 15 September 2015. Thirty day old seedlings were transplanted in the main field on 15 October 2015. The experiment was laid out in a RCB design without replication. The unit plot size was 7.5 ´0.7 m and 10 plants were accommodated in a plot with a plant spacing of 75 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 first harvest, marketable fruit number/ plant, fruit weight/ plant (kg), plant height at first harvest (cm), plant height at last harvest (cm), fruit length (cm), fruit diameter (cm), average fruit weight (g), fruit yield (t/ha) and fruit infestation by BFSB (%) 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, 2015-16, Horticulture Research Centre, BARI, Joydebpur, Gazipur-1701

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 II and III and cluster I and III would exhibit high heterosis and is also likely to produce new recombinants with desired traits. Therefore, inbreeds belong to cluster I, cluster II and cluster III will be given higher priority for crossing in future eggplant hybridization programme.

Knowledge Management: Report/Proceedings