Legume Genomics and Genetics 2015, Vol.6, No.4, 1-7
1
Research Report Open Access
Detection of Epistasis for Yield and Some Important Agro-Morphological Traits in
Mungbean (
Vigna radiata
L. Wilczek)
Chandra Mohan Singh
1,2
, Ajay Kumar Singh
3
, S. B. Mishra
3
, Anil Pandey
3
, Binod Kumar
1
1. Department of Plant Breeding and Genetics, Rajendra Agricultural University, Pusa (Samastipur)- 848 125, Bihar, India.
2. Agro-Meteorology Division, Faculty of Basic Science and Humanities, Rajendra Agricultural University, Pusa (Samastipur)- 848 125, Bihar, India.
3. Department of Plant Breeding and Genetics, Tirhut College of Agriculture, Dholi - 843 121, Muzaffarpur, Bihar, India.
Corresponding author email: Email:
Legume Genomics and Genetics, 2015, Vol.6, No.4 doi:
10.5376/lgg.2015.06.0004
Received: 10 Jun., 2015
Accepted: 06 Aug., 2015
Published: 21 Aug., 2015
Copyright
©
2015
Singh 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:
Singh C. M., Singh A .K., Mishra S. B., Pandey A., and Kumar B., 2015, Detection of Epistasis for Yield and Some Important Agro-Morphological Traits in
Mungbean (
Vigna radiata
L. Wilczek), Vol.6, No.5, 1
-
7 (doi:
10.5376/lgg.2015.06.0004
)
Abstract
Generation mean analysis and chi-square were attempted to detect the epistasis for yield components and inheritance of
growth habit in two crosses of mungbean
namely
Meha/ DMS 03-17-2 and Meha/ DMS 01-34-2. The study revealed the presence of
one or more kinds of epistatic effects for almost all the agro-morphological traits under study, indicted their complex inheritance nature.
The duplicate type of digenic epistatic interaction was observed for most of the agro-morphological traits in both crosses, indicated that
the advancement of generations through single seed decent (SSD) till fixation for accumulating the favorable genes followed by
delayed selection might be rewarding. Meha/ DMS 03-17-2 (number of seeds per pod) and Meha/ DMS 01-34-2 (number of
secondary branches per plant) are likely to give the opportunity to isolate transgressive segregants for respective traits given in
prenthesis. The monogenic nature of growth habit in both crosses indicated the possibility for manipulating the traits and to recover/
develop the ideal plant type for mungbean improvement.
Keywords
Epistasis; GMA; Gene effect; Growth habit; Inheritance; Mungbean
1 Background
Due to complex nature of seed yield, studying the
mode of inheritance of yield and its component traits
is essential for formulation of an effective breeding
programme for genetic improvement of any crop
like
mungbean. Because selection aimed at one trait may
lead to negative or positive response on the other
trait(s). Hence selection of particular trait could
depends on its nature and extent of heritability
estimates. One of the best methods for the estimation
of genetic parameters is generation mean analysis
(GMA), in which epistatic effects could also be
estimated. Six basic generations variance components
may give an accurate information in relating inheritance.
Thus, these components may complete the derived
information from means (Mather and Jinks, 1982;
Kearsey and Pooni, 1996). The choice of an efficient
breeding procedure depends on the knowledge of the
genetic controlling system of the character to be
selected (Azizi et al., 2006). Growth pattern (erect/
spreading) of the plants is also important and are
related to the development of lodging resistance in
mungbean. Development of varieties with erect and/
semi-erect growth habit may helps to manipulate the
plant density and finally enhance the production and
productivity. Keeping the above facts in mind, the
present experiment was conducted (1) to test suitability
of additive-dominance model (2) to estimate genetic
parameters such as gene effects using six basic
generations and (3) to study the inheritance pattern of
growth habit in mungbean.
2 Results and Discussion
Among all six generations of cross I (Meha/ DMS
03-17-2) (Table 1); BC
1:1
, BC
1:2
and F
2
were found
earlier in terms of flowering than the both parents and
F
1
, whereas F
2
exhibited late vegetative period than all
the five generations. F
1
followed by BC
1:1
and BC
1:2
exhibited superior performances in terms of DM,
indicated the possibility to recover the early maturing
promising lines. P
1
was noted as shortest plant type,
whereas F
2
was the tallest one. BC
1.1
and BC
1.2
were
found taller than P
1
but shorter than P
2
. The maximum
NMS was found in B
1
, whereas shortest AIL was
noted in P
1
.
