Identification of Essentially Derived Varieties Obtained from Biparental Crosses of Homozygous Lines: II. Morphological Distances and Heterosis in Comparison with Simple Sequence Repeat and Amplified Fragment Length Polymorphism Data in Maize

Crop Science ◽  
2005 ◽  
Vol 45 (3) ◽  
pp. 1132-1140 ◽  
Author(s):  
M. Heckenberger ◽  
M. Bohn ◽  
D. Klein ◽  
A. E. Melchinger
Keyword(s):  
Length Polymorphism ◽  
Fragment Length ◽  
Simple Sequence Repeat ◽  
Fragment Length Polymorphism ◽  
Amplified Fragment Length Polymorphism ◽  
Sequence Repeat ◽  
Essentially Derived Varieties ◽  
Polymorphism Data ◽  
Simple Sequence

scholarly journals A Genetic Linkage Map of Olive Based on Amplified Fragment Length Polymorphism, Intersimple Sequence Repeat and Simple Sequence Repeat Markers

2010 ◽  
Vol 135 (6) ◽  
pp. 548-555 ◽  
Author(s):  
Bouchaib Khadari ◽  
Amal Zine El Aabidine ◽  
Cinderella Grout ◽  
Inès Ben Sadok ◽  
Agnès Doligez ◽  
...  
Keyword(s):  
Linkage Map ◽  
Length Polymorphism ◽  
Fragment Length ◽  
Simple Sequence Repeat ◽  
Fragment Length Polymorphism ◽  
Amplified Fragment Length Polymorphism ◽  
Issr Markers ◽  
Phenotypic Characterization ◽  
Sequence Repeat ◽  
Simple Sequence

A detailed genomic linkage map of the olive [Olea europaea L. ssp. europaea (2x = 2n = 46)] was constructed with a 147 F1 full-sib ‘Olivière’ × ‘Arbequina’ progeny in a two-way pseudo-test cross-mapping configuration. Based on a logarithm of odds threshold of 6 and a maximum recombination fraction of 0.4, maternal and paternal maps were constructed using 222 makers [178 amplified fragment length polymorphism (AFLP), 37 simple sequence repeat (SSR), seven intersimple sequence repeat (ISSR)] and 219 markers (174 AFLP, 39 SSR, 6 ISSR) markers, respectively. The female map regrouped 36 linkage groups (LGs) defining 2210.2 cM of total map length with an average marker spacing 11.2 cM and a maximum gap of 48.5 cM between adjacent markers. The male map contained 31 LGs and covered a distance of 1966.2 cM with an average and a maximum distance between two adjacent markers of 10.3 and 40.4 cM, respectively. Mean LG size was 61.3 and 63.4 cM in the maternal and paternal maps, respectively. The LGs consisted of two to 17 loci (up to 21 loci in the paternal map) and ranged in length from 2.7 to 182 cM (female map) or from 4.1 to 218.1 cM (paternal map). Markers were distributed throughout the maps without any clustering. The total length of the consensus map was 3823.2 cM containing 436 markers distributed into 42 LGs with a mean distance between two adjacent loci of 8.7 cM. Both parental maps and the consensus maps were compared with previously published olive maps. Although not saturated yet, the present maps offer a promising tool for quantitative trait loci mapping because phenotypic characterization of the cross is currently carried out.

Molecular characterization of Fusarium head blight resistance in Wangshuibai with simple sequence repeat and amplified fragment length polymorphism markers

Genome ◽  
2004 ◽  
Vol 47 (6) ◽  
pp. 1137-1143 ◽  
Author(s):  
Wenchun Zhou ◽  
Frederic L Kolb ◽  
Jianbin Yu ◽  
Guihua Bai ◽  
Larry K Boze ◽  
...  
Keyword(s):  
Length Polymorphism ◽  
Fragment Length ◽  
Phenotypic Variation ◽  
Simple Sequence Repeat ◽  
Fragment Length Polymorphism ◽  
Molecular Mapping ◽  
Amplified Fragment Length Polymorphism ◽  
Sequence Repeat ◽  
Fhb Resistance ◽  
Simple Sequence

Molecular mapping of Fusarium head blight (FHB) resistance quantitative trait loci (QTL) and marker-assisted selection of these QTL will aid in the development of resistant cultivars. Most reported FHB resistance QTL are from 'Sumai 3' and its derivatives. 'Wangshuibai' is a FHB-resistant landrace that originated from China and is not known to be related to 'Sumai 3'. A mapping population of 139 F5:6 recombinant inbred lines was developed from a cross of 'Wangshuibai' and 'Wheaton'. This population was developed to map the FHB-resistant QTL in 'Wangshuibai' and was evaluated twice for Type II FHB resistance. A total of 1196 simple sequence repeat and amplified fragment length polymorphism markers were screened on this population, and four FHB resistance QTL were detected. A major QTL near the end of 3BS explained 37.3% of the phenotypic variation. Another QTL on 3BS, located close to the centromere, explained 7.4% of the phenotypic variation. Two additional QTL on 7AL and 1BL explained 9.8% and 11.9% of the phenotypic variation, respectively. The simple sequence repeat and amplified fragment length polymorphism markers closely linked to these QTL may be useful for stacking QTL from 'Wangshuibai' and other sources to develop cultivars with transgressive FHB resistance.Key words: head scab, marker-assisted selection, molecular mapping, Triticum aestivum L., wheat.

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