Character association and path analysis in garlic (Allium sativum L) for yield and its attributes

Abstract

Character association and path analysis in twenty genotypically diverse indigenous genotypes of garlic (Allium sativum L.) were studied at the Central Institute of Temperate Horticulture, Srinagar during the years 2010 and 2011 for nine important characters. Total bulb yield showed positive and significant genotypic and phenotypic associations with plant height, number of leaves per plant, pseudo-stem length, bulb weight and number of cloves per bulb, indicating that selection based on these traits will help increasing the yield of garlic. Path coefficient analysis provides an effective means of a critical examination of specific force action to produce a given correlation and measure the relative importance of each factor. In this analysis bulb yield was taken as dependant variable and rest characters were considered as independent variable. Bulb weight showed high positive and direct effect and significant positive correlation with total bulb yield. Therefore, bulb with higher weight should be considered in selection criteria for increasing the total bulb yield and emphasis should be given for selecting the genotypes with higher bulb weight. Overall path analysis indicated that direct effect of bulb weight and equatorial bulb diameter and indirect effect of plant height, number of leaves per plant, pseudo stem length, polar bulb diameter, equatorial bulb diameter, number of cloves per bulb and average weight of 50 cloves should be considered simultaneously for amenability of total bulb yield. DOI: http://dx.doi.org/10.3329/sja.v11i1.18374 SAARC J. Agri., 11(1): 45-52 (2013)

Character Association and Path Analysis for Quantitative Traits in Garlic (Allium sativum L.)

“…The characters leaf width at middle portion (0.1489) and pseudostem height (0.1123) had low and positive direct effect on bulb yield, while bulb equatorial diameter (0.0468), bulb polar diameter (0.0334), bulb weight (0.0692), number of cloves per bulb (0.0056), clove equatorial diameter (0.0799), and total soluble solids (0.0975) had very low or negligible and positive direct effect on bulb yield. High and positive direct effect of plant height on bulb yield has also been reported in garlic by Srivastava et al, (1993), Barman et al, (1996), Agarwal (1999), Shaha and Kale (1999), Agrawal andTiwari (2009), Meena (2010), Tsega et al, (2010), Singh et al, (2012), Dhall et al, (2013), Idress Al Gehani et al, (2013, Singh et al, (2013), Pervin et al, (2014) and Satesh Kumar et al, (2015), of clove polar diameter on bulb yield by Sharma et al,(2016). Thus, these characters viz., plant height and clove polar diameter turned out to be the major components of bulb yield and direct selection for these traits will be rewarding for yield improvement.…”

“…Similar result was found by Moravec et al, (1974), Singh (1981), Kalloo et al, (1982), Singh (1984), Rahman and Das (1985), Lokhande and Pawar (1988), Kohli and Fageria (1992), Kohli and Mahajan (1993), Srivastava et al, (1993), Baiday and Tiwari (1995), Thakur et al, (1997), Agrawal (1999), Khan (2002), Agrawal and Tiwari (2009), Tsega et al, (2010), Singh et al, (2012), Sonkiya et al, (2012), Idress Al Gehani et al, (2013, Panse et al, (2013), Singh et al, (2013), Pervin et al, (2014), Samaptika Kar et al, (2014, Kadam et al, (2016), Prajapati et al, (2016), Bhatt et al, (2017) in garlic.…”

Associations between morphological and agronomic characteristics in garlic crop

“…Genotypic correlation provides an inference about the genetic makeup of an individual being then inheritable in nature. And finally, environmental correlation plays the expression of the cultivated genotype at a given location (Cruz et al, 2012;Singh et al, 2013).…”

“…Genotypic correlations were higher in relation to the phenotypic ones, thus evidencing higher contributions of genetic factors between characteristics in the two cultivation environments. High genetic correlations may be useful in the selection of superior genotypes in genetic breeding programs, since it allows indirect gains to be obtained by selecting a genotype based on a character that has another positively correlated (Dubey et al, 2010;Singh et al, 2013, Chotaliya & Kulkarni, 2017. The characteristics of difficult measurements in the present study were plant height and number of leaves (to be carried out in the field in twelve plants per plot) and the commercial yield of bulb, having to classify each bulb on diameter, being commercial those presenting diameter greater than 37 mm.…”

“…Correlations are measures of associations between two characteristics that quantify the magnitude and direction of the influences of one characteristic on another, and may help in the indirect selection of one without the need to evaluate the other one leading to faster progress (Cruz et al, 2012;Singh et al, 2013;Rezende & Silva, 2015). High magnitude indicates the existence of a linear relationship between the studied characteristics.…”