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 Diversity in Eggplant Genotypes for Heat Tolerance

M. S. Uddin
Associate Professor
Dept. of Agro-forestry and Environmental Science, Sylhet Agricultural University, Sylhet-3100, Bangladesh;

M. M. Rahman
Professor
Dept. of Horticulture, BSMRAU, Gazipur-1703, Bangladesh

M. M. Hossain
Professor
Dept. of Horticulture, BSMRAU, Gazipur-1703, Bangladesh

M. A. K. Mian
Professor
Dept. of Genetics and Plant Breeding, BSMRAU, Gazipur-1703, Bangladesh

Abstract/ Executive Summary:

Genetic divergence in eighteen eggplant genotypes was studied at Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur, Bangladesh using multivariate analysis. Eggplant genotypes were evaluated for different quantitative characters. Among the genotypes wide variations were observed for plant, flower and fruit size, shape and color. Out of 18 genotypes only 8 were found to be suitable for summer and summer rainy season cultivation as heat tolerance. The 18 genotypes were grouped into four distinct clusters. Cluster I comprised of 2 genotypes, cluster II had 3, cluster III had 3 and cluster IV had 10 genotypes. Clustering pattern of the genotypes was not correlated with their geographical distribution. The highest inter cluster distance was between cluster I and IV (764.67) while, it was the lowest between cluster II and III (213.30). The highest and lowest intra cluster distance was displayed in cluster II (94.14) and cluster I (28.79) respectively. Yield per plant, number of fruits per plant, plant canopy, fruit weight, fruit length and number of harvest had the highest contribution towards total divergence. Moderate to high Shannon-Weaver Diversity Indices (SWDI) was found among the genotypes for most of the studied qualitative characters. Quantitative vegetative characters had high diversity among the genotypes, while it was moderate to high diversity for both flower and fruit characters. Eight eggplant genotypes were selected as heat tolerance based on genetic diversity of morphological characters in eggplant.

Keywords: Eggplant, Genetic diversity, Genotype, Heat tolerance, Qualitative character.

Location: Jessore, Tangail, East-West Seed Co. Ltd, Bangladesh, Horticulture Research Center and Plant Genetic Resources Center of Bangladesh Agriculture Research Institute, Gazipur

Start Date: 00-02-2007

End Date: 00-09-2009

Program Area: Variety and Species

Commodity: Brinjal

Objectives:

To identify the most diverged genotypes in relation to yield and yield contributing characters
To find out the characters, which contribute towards divergence of the genotype.

Methodology:

A study on gnetic diversity in eggplant genotypes was conducted at Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh during February 2007 to September 2009. A total of eighteen eggplant genotypes viz., SM001, SM002, SM003, SM004, SM005, SM006, SM024, SM034, SM057, SM058, SM061, SM062, SM064, SM065, SM066, SM067, SM068 and SM069, were collected from different parts of the country including Jessore, Tangail, East-West Seed Co. Ltd, Bangladesh, Horticulture Research Center and Plant Genetic Resources Center of Bangladesh Agriculture Research Institute, Gazipur during 2006-2007. Eighteen eggplant genotypes were evaluated during summer and summer rainy season 2008 and 2009 for diversity study against hot humid condition of Bangladesh. The experiment was laid out in randomized complete block design with three replications. The minimum and maximum temperature during the study period was 26.8^oC and 33.49^oC, respectively. The fruits were harvested at marketable stage starting from June to September every year. Data on 34 quantitative characters (plant, leaf, flower and fruit characters) were recorded following the descriptor of eggplant. Multivariate analysis including Principal Component Analysis, Principal Coordinate Analysis, Canonical vector analysis/ Euclidean D² values and Shannon-Weaver Diversity Index were performed with the data for each character using MS Excel, MSTATC and SPSS program for genetic diversity study.

Source of Information: SAARC J. Agri., 12(2): 25-39 (2014)

Article Link (Online Journal): http://www.banglajol.info/index.php/SJA/article/view/21914/15030

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Moderate to high diversity was present among the genotypes for quantitative characters. Yield and yield contributing characters contributed more towards diversity among the genotypes. All the genotypes were grouped in to 4 clusters. Eight genotypes, viz., SM001, SM002, SM004, SM006, SM024, SM034, SM057 and SM067 were selected as heat tolerance based on genetic diversity of morphological characters in future hybridization program for heterotic effects.

Knowledge Management: Journal