Plant Gene and Trait, 2015, Vol.6, No.7, 1-11
1
Research Article
Open Access
Assessment of Trait Efficiency and Selection of Parents in Brinjal (
Solanum
melongena
L.)
Abul Bashar
1
, Rokib Hasan
1
, Nazmul Alam
1
, Md. Kamal Hossain
1
, Nguyen Vu Hong An
2
, A. K. M. Mahmudul Huque
2,
1 Plant Breeding & Crop Improvement Laboratory, Department of Botany, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh
2 Plant Molecular Genetics Laboratory, Division of Life Sciences, Korea University, Seoul 136-701, Republic of Korea
Corresponding author Email:
International Journal of Aquaculture, 2015, Vol.6, No.7 doi:
Received: 19 Oct., 2015
Accepted: 07 Dec., 2015
Published: 19 Dec., 2015
Copyright © 2015
Bashar A. et al., This is an open access article published under the terms of the Creative Commons Attribution License, which permits
unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article
:
Bashar A., Hasan R., Alam N., Hossain M.K., Nguyen Vu Hong An, and Mahmudul Huque A.K.M., 2015, Assessment of trait efficiency and selection of
parents in brinjal (
Solanum melongena
L.), Plant Gene and Trait, 6(7): 1-11 (doi:
Abstract
Twenty one brinjal genotypes with a number of quantitative traits were assessed under biometric analysis for evaluating
efficient agro-economic traits and selecting promising parents. No. of fruits in inflorescence/plant, fruits/plant, yield/plant (g), fresh
weight/fruit (g), harvesting period and no. of fruits in solitary/plant can consider as favorable attributes for improvement through
selection because of their higher GCV, PCV, heritability and genetic advance as percent of mean. Emphasis can be given to characters
with high positive direct effect on yield like no. of fruits in inflorescence/plant, fresh weight/fruit (g) and no. of secondary
branches/plant. Improvement would be more efficient with selection index I
134
based on three characters (yield/plant (g) + no. of
fruits in inflorescence/plant + no. of fruits in solitary/plant) which showed genetic gain 3.39 and relative efficiency 258.14%
significantly higher to other indexes based on four or more characters. Biplot analysis using selection score and decisive trait index
indicated that Sada Begun, Debjhuri Hajari, Kajla, and BARI-9 can be the promising parents for future breeding programme.
Keywords
Intensity, Brinjal (
Solanum melongena
L.), genetic parameter, correlation coefficient and path coefficient, selection
index
1 Introduction
Solanum melongena
L. (2n = 24) commonly known as
brinjal or eggplant or aubergine of
Solanaceae
family,
a self-pollinated annual
perennial
vegetable
extensively cultivated both in temperate and tropical
zones of the world (Rahman et al., 2014). It belongs to
3 main botanical varieties under the species
melongena
:
esculentum
,
serpentinum
and
depressum
(Singh et al., 2014). Demand of brinjal as a fruit
vegetable is increasing gradually all over the world
because of its low price and high nutritive value
(Lakshmi et al., 2013). At present, annual production
of brinjal in Bangladesh is around 3.28 metric tons per
acre. Whereas, higher production per acre was
observed for China 14.61 mt/acre, India 7.53 mt/acre,
Iran 12.9 mt/acre, Egypt 11.27 mt/acre and Turkey
12.58 mt/acre.
For improvement of yield potential, some Asian
countries have conducted extensive research on
genetically modified insect resistant Bt brinjal
containing
Cry1Ac
gene from the soil bacterium
Bacillus thuringiensis
. But genetic modification may
have adverse effect on human health, soil eco-system
and environment. So, public perception is always
against genetically modified brinjal. Considering the
ever increasing consumer demand and recent concern
in consumption of genetically modified brinjal, it is
imperative to improve brinjal through conventional
breeding programme. And for successful breeding
programme, the information about variability is a
prerequisite as the manipulation of functional breeding
mostly depends on the existence, nature and extent of
genetic variability among concerned genotypes for
different quantitative traits (Arunkumar et al., 2014).
Bangladesh possesses a wide local and commercial
collection of brinjal cultivars having considerable
morphological and genetic variability, so, varietal
improvement through systemic breeding programme
would be much efficient in Bangladesh.
The phenotypic variability among a collection of
germplasms gives an indication of potential genotypic
variability; however, the quantitative characters are
greatly influenced by the environment. Therefore,
selection of the important traits for a sound breeding
