International Journal of Horticulture, 2017, Vol.7, No.7, 47-53
47
Research Report
Open Access
Association Analysis in Chilli Genotypes for Dry Fruit Yield
S.Srividhya
1
, S. Ramesh Kumar
2
, G. Dr. G. Mohamed Yassin
1
1 Department of Horticulture, Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal-609 603, Puducherry, India
2 Department of Horticulture, Kumaraguru Institute of Agriculture, Sakthi Nagar, Erode- 638315, Tamil Nadu, India
Corresponding email:
International Journal of Horticulture, 2017, Vol.7, No.7 doi:
Received: 20 Feb., 2017
Accepted: 06 Mar., 2017
Published: 27 Mar., 2017
Copyright
©2017 Srividhya 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
:
Srividhya S., Yassin G.M., and Kumar S.R., 2017, Association analysis in chilli genotypes for dry fruit yield, International Journal of Horticulture, 7(7): 47-53
(doi:
)
Abstract
There is a need to intensify the development of high yielding cultivars in chilli. Investigation was carried out to study the
genetic correlations and path coefficients in chilli genotypes (
Capsicum annuum
L.) among eighteen traits under study. High significant
and positive correlation on dry fruit yield plant
-1
was observed at both genotypic and phenotypic levels with plant height, number of
primary branches plant
-1
, leaf area, number of fruits plant
-1
, pedicel length, fruit girth, fruit weight, number of seeds fruit
-1
, 1000 seed
weight, capsanthin content and green fruit yield. High positive direct effect of dry fruit yield in chilli was observed with number of fruits
plant
-1
, days to first flowering, green fruit yield, number of seed fruit
-1
and days to final harvest. From both correlation and path analysis,
it is confirmed that important characters such as the number of fruits plant
-1
, fruit weight, green fruit yield, number of seeds fruit
-1
, days
to first flowering, days to final harvest can be considered as selection indices in evaluating the best genotypes towards green fruit and dry
fruit yield for future breeding programme in addition to the qualitative characters of capsanthin and capsaicin contents.
Keywords
Correlation; Yield Attributes; Selection
Background
Chilli (
Capsicum annuum
L) is an important crop both as a vegetable and spice valued for its aroma, taste, flavour
and pungency (Vikram et al., 2014). Chilli is one of the rich sources of Vitamin A (292 IU) and Vitamin C (111
mg) per 100 g fresh weight. It is cultivated over 1.4 million ha with a production of 18.8 million tonnes (NHB,
2014). Yield being a complex character, which is not only influenced by its associated traits but also governed by
number of genes and influenced by environment. So, to make selection effective, it is necessary to separate
genetic variability from total variability, which enables breeder to adopt suitable breeding programme. Mere
variability studies will not be of much helpful for improvement of yield, as it is associated with number of yield
component characters. Association analysis of quantitative attributes would help in choosing component
characters that are positively correlated (Kadwey, 2014). Therefore, it is essential to know the degree of mutual
association (correlation) prevailing between yield and its component characters, to form the basis for selecting
desirable genotypes. However, the correlation between yield and its component characters are often not real,
because of inter relationship existing between the component characters themselves. Thus, analysis of inter
component correlation is very essential to expose the direct and indirect contribution of each of the component,
which in turn is determined by path-coefficient analysis (Wright, 1921). To plan appropriate breeding programme
and to evolve high yielding cultivars the plant breeders must possess adequate knowledge on variability, character
association patterns, the extent of contribution of each character to fruit yield and genetic divergence. To develop
such programmes there is a need to evaluate the available germplasm with the following objectives: (i) To
understand the degree and direction association between yield and yield components and their inter correlation
among themselves and (ii) To assess the direct and indirect effects of component traits on yield.
1 Materials and Methods
Field experiment was conducted during 2015-16 to study the genetic correlations in chilli. A total of thirty diverse
genotypes in chilli group were collected from different sources and used as study materials (Table 1). The trial
was conducted in Department of Horticulture, Pandit Jawaharlal Nehru College of Agriculture and Research
