Genetic Diversity for RFLPs in European Maize Inbreds: I. Relation to Performance of Flint ✕ Dent Crosses for Forage Traits

Boppenmaier, Jürgen; Melchinger, Albrecht E.; Brunklaus-Jung, Elisabeth; Geiger, H. H.; Herrmann, Reinhold G.

doi:10.2135/cropsci1992.0011183x003200040012x

Cited by 61 publications

(33 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the magnitude of correlation coefficients determined between GDs of line tester combinations with F 1 yield and yield MPH in this study was not large enough; therefore, it is of less utility for the perdition of hybrid performance. Similar results were reported by a number of investigators with different types of crops including maize (Boppenmaier et al 1992;Martin et al 1995;Xu et al 2002;Barbosa et al 2003;Oliveira et al 2004).…”

Section: Discussionsupporting

confidence: 86%

Relationship between hybrid performance and AFLP based genetic distance in highland maize inbred lines

et al. 2007

View full text Add to dashboard Cite

The objectives of this study were to determine the crossing performance of highland maize inbred lines for grain yield, days to silk and plant height; estimate genetic distance (GD) among the inbred lines and in association with tester parents, and to investigate the relationship of GD with hybrid performance and midparent heterosis (MPH). A total of 26 inbred lines were crossed with six (population and line) testers in a factorial-mating scheme. The F 1' s and the parents were evaluated at five locations in Ethiopia. Nine amplified fragment length polymorphism (AFLP) primer pairs were used to genotype all the parents. The F 1' s were found to vary widely for grain yield and other traits measured. Yield superiority of more than 30% over the best hybrid check was obtained for some testcross hybrids. Midparent heterosis on average was moderate for grain yield and, plant height. And for days to silking, MPH values were mostly negative. Mean GD values determined from the inbred lines by population tester (0.680) and line tester (0.661) combinations were not significantly different. Cluster analysis separated the tester parents from the corresponding inbred lines. AFLP grouping of the inbred lines was in agreement with their pedigree records. Genetic distances derived from the inbred lines × all testers and from the population testers' sub-group were not positively correlated with hybrid performance and MPH for most traits. In contrast, correlations of GDs involving the line testers' sub-group with F 1' s and MPH were significantly positive but with low magnitude to be of predictive value.Abbreviations AFLP Amplified fragment length polymorphism -GD Genetic distance -MPH Midparent heterosis

show abstract

Section: Discussionsupporting

confidence: 86%

Relationship between hybrid performance and AFLP based genetic distance in highland maize inbred lines

et al. 2007

View full text Add to dashboard Cite

show abstract

“…There was no correlation between GD and F1 grain yield, MPH, HPH and SCA when the GD was C0.77. In previous studies, the predictive value of GD was reported for crosses in temperate maize among genetically related lines than among more distantly related lines (Godshalk et al 1990;Boppenmeier et al 1992;Melchinger 1993;Ajmone Marsan et al 1998) and similar findings were reported in tropical maize (Benchimol et al 2000). In this study, the high correlation of GD with F1 grain yield and with SCA in specific subsets of crosses having a narrower range of GD shows that GD can be put to practical use in predicting hybrid performance.…”

Section: Subsets Of Crossessupporting

confidence: 85%

Genetic distance and hybrid value in tropical maize under P stress and non stress conditions in acid soils

et al. 2010

View full text Add to dashboard Cite

An emphasis in maize breeding for areas with acid soils is the development of varieties with tolerance to P-deficiency plus high yield potential in acidic as well as normal soils. This study was carried out to assess the (i) genetic diversity within a set of tropical inbred lines developed from acid soil-tolerant populations; (ii) F1 yield performance, mid-parent heterosis (MPH), high-parent heterosis (HPH), and specific combining ability (SCA) in a diallel set of crosses under P stress (low P) and non-stress (high P) conditions; and (iii) the effect of P stress on the relationship between genetic distance (GD) and hybrid performance. Using field evaluation and molecular marker studies, the results show that these germplasm from the South American maize breeding program of CIMMYT for improving tolerance to acid soils had only a moderate level of genetic diversity. The utility of GD as a predictor of hybrid value is best up to a certain threshold, as correlations with GD became inconsistent when the inbred parents were greatly divergent. There was no correlation between GD and F1 grain yield, MPH, HPH and SCA when the GD was [0.77. The high correlation of GD with F1 grain yield and with SCA in specific subsets of crosses having a narrower range of GD shows that GD can be put to practical use in predicting hybrid performance. The highest correlation between GD and SCA, seen in the subset of crosses between lines within a cluster, was reasonably stable even when the environment had a severe effect on yield.

show abstract

“…The analysis of variance (ANOVA) for agronomic traits was performed on the data of each environment separately, followed by a combined analysis across environments based on the lattice adjusted entry means according to Cochran & Cox (1957) and following Boppenmaier et al (1992), using PLABSTAT 2O (Utz, 2001). All effects in the statistical model were considered random.…”

Section: Data Analysesmentioning

confidence: 99%

Hybrid performance and AFLP- based genetic similarity in faba bean

2004

View full text Add to dashboard Cite

Successful prediction of heterosis and performance of F 1 -hybrids from the genetic similarity of their parents based on molecular markers has been reported in several crops and can be very helpful in hybrid breeding. The relationship between genetic similarities based on amplified fragment length polymorphism (AFLP) of 18 European faba bean lines and their hybrid performance and heterosis was investigated. Parental lines, 62 F 1 -hybrids and their F 2 -progenies were evaluated in field trials in four environments in Germany for seed yield, 1,000-seed weight and plant height. Results clearly demonstrated a stable superiority of the hybrids over their inbred parents and elite check cultivars, and showed a marked and varying amount of heterosis. Parental seed yield and F 2 -hybrid yield were promising as predictors for F 1 -hybrids. AFLP analysis of the 18 inbred lines using 26 EcoRI/MseI primer combinations resulted in 1202 polymorphic fragments. Cluster analysis based on genetic similarity estimates unambiguously identified pedigree-related inbred lines. No clear separation of the 18 inbred lines into subgroups was detected. Correlation coefficients between genetic similarity estimates and either heterosis or F 1 -hybrid performance were small and not useful. Also correlations between specific genetic similarity and specific combining ability were too small for all traits to be of predictive value. Results showed that AFLP-based genetic similarities are not useful to predict the performance of hybrids or heterosis within the elite European faba bean gene pool.

show abstract

Genetic Diversity for RFLPs in European Maize Inbreds: I. Relation to Performance of Flint ✕ Dent Crosses for Forage Traits

Cited by 61 publications

References 0 publications

Relationship between hybrid performance and AFLP based genetic distance in highland maize inbred lines

Relationship between hybrid performance and AFLP based genetic distance in highland maize inbred lines

Genetic distance and hybrid value in tropical maize under P stress and non stress conditions in acid soils

Hybrid performance and AFLP- based genetic similarity in faba bean

Contact Info

Product

Resources

About