Biplot analysis of diallel crosses of NS maize inbred lines

Abstract

Genetic markers, from morphological to molecular, in function with early Heterosis is a prerequisite for the successful commercial maize production. It does not appear in any cross of two inbred lines, and therefore, the determination of combining abilities of parental lines is essential. The most commonly used method for determining combining abilities is diallel analysis. Besides conventional methods for diallel analysis, a new biplot approach has been sugested. In this paper, we studied the combining ability for grain yield in a set of genotypes obtained by diallel crossing system of six inbred lines. Both, the Griffing’s conventional method and the biplot approach have been used for diallel analysis. Comparing the GCA values from biplot analysis and Griffing’s method, similar results can be observed, with the exception of NS L 1051 and NS L 1000 whose ranks are interchanged. Biplot analysis enables the SCA estimation of parent inbred, and the highest SCA has inbred B73D. Biplot analysis also allows the estimation of the best crosses. Inbred B73D shows the best results when crossed with testers Mo17Ht, NS L 1051 and N152, inbred N152 combines best with testers NS L 1001 and NS L 1000, whereas the cross of inbred NS L 1051 with tester B73D results with the highest grain yield per plant in comparison with other testers

Identifying superior spring wheat genotypes through diallel approaches

“…2), which is sufficient to explain the whole performance variation of the parents and the hybrid combinations (Yan and Hunt, 2002). Similar results were found by Malla et al (2010) and Boćanski et al (2011). The parents BRS Pardela, Fundacep Cristalino and CD 150 are plotted on the positive end of the average tester coordinate (ATC) abscissa ( Fig.…”

“…The results reported here, indicate similarities between the Griffing, multivariate (PC1), REML/BLUP and GGE biplot methods with respect to the GCA. Darvishzadeh et al (2009), Malla et al (2010 and Boćanski et al (2011) also reported such similarities between the Griffing and GGE biplot analyses. The highest SCA estimates were obtained in the parents CD 113, CD 150 and Fundacep Cristalino ( Fig.…”

Combining ability and heterosis in a diallel cross of safflower under Brazilian tropical conditions

“…Diallel analysis has been widely used in genetic research to study the inheritance of important traits among selected genotypes and to identify superior parents regarding the development of hybrids or cultivars for use in a breeding program (Badu‐Apraku, Oyekunle, Akinwale, & Lum, 2011). Diallel is one of the commonly used methods in studies of quantitative traits in plant breeding and is based on the concepts proposed by Sprague and Tatum (1942), who defined general combining ability (GCA) as the average behavior of a parent in the hybrid combinations, and specific combining ability (SCA) as the behavior that favors certain hybrid combinations to be higher or lower than the average of the parents involved (Bočanski et al., 2011; Hill, W.W., Oritz, & Stolen, 2001). Parents are crossed to allow prediction of their combining ability and elucidate the nature of gene action involved in the inheritance of traits (Khan et al., 2009).…”

GGE Biplot Analysis for Combining Ability of Grain Yield and Early Maturity in Maize Mutant in Indonesia

“…Diallel and line×tester analysis, provide an adequate information on the genetic identity of genotype especially on dominance-recessive relations and various types of gene effects (Singh and Chaudhary, 1977). These methods could be used to determine the inheritance of agronomically important trait among a set of genotypes and to estimate combining abilities to make decision whether to include it in hybrid or cultivar development (Singh and Chaudhary, 1977;Yan and Kang, 2003;Bocanski et al, 2011). Even though diallel analysis have been used in breeding programs, they are very labor-intensive, especially when the number of genotypes to be evaluated is increased .…”