Quantitative trait loci for panicle size, heading date and plant height co-segregating in trait-performance derived near-isogenic lines of rice (Oryza sativa)

2006 ◽  
Vol 113 (2) ◽  
pp. 361-368 ◽  
Author(s):  
Yushan Zhang ◽  
Lijun Luo ◽  
Caiguo Xu ◽  
Qifa Zhang ◽  
Yongzhong Xing
Keyword(s):  
Oryza Sativa ◽  
Quantitative Trait Loci ◽  
Plant Height ◽  
Quantitative Trait ◽  
Heading Date ◽  
Near Isogenic Lines ◽  
Isogenic Lines ◽  
Trait Loci

Tagging quantitative trait loci for heading date and plant height in important breeding parents of rice (Oryza sativa)

Euphytica ◽  
2014 ◽  
Vol 197 (2) ◽  
pp. 191-200 ◽  
Author(s):  
Seonghee Lee ◽  
Melisa H. Jia ◽  
Yulin Jia ◽  
Guangjie Liu
Keyword(s):  
Oryza Sativa ◽  
Quantitative Trait Loci ◽  
Plant Height ◽  
Quantitative Trait ◽  
Heading Date ◽  
Trait Loci

Quantitative Trait Loci Influencing Mycotoxin Contamination of Maize: Analysis by Linkage Mapping, Characterization of Near-Isogenic Lines, and Meta-Analysis

Crop Science ◽  
2014 ◽  
Vol 54 (1) ◽  
pp. 127-142 ◽  
Author(s):  
Santiago X. Mideros ◽  
Marilyn L. Warburton ◽  
Tiffany M. Jamann ◽  
Gary L. Windham ◽  
W. Paul Williams ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Linkage Mapping ◽  
Meta Analysis ◽  
Near Isogenic Lines ◽  
Mycotoxin Contamination ◽  
Isogenic Lines ◽  
Trait Loci

scholarly journals Mapping Quantitative Trait Loci for Heading Date and Awn Length Using an Advanced Backcross Line from a Cross between Oryza sativa and O. minuta

2006 ◽  
Vol 56 (4) ◽  
pp. 341-349 ◽  
Author(s):  
Le-Hung Linh ◽  
Feng-Xue Jin ◽  
Kyung-Ho Kang ◽  
Young-Tae Lee ◽  
Soo-Jin Kwon ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Heading Date ◽  
Advanced Backcross ◽  
Backcross Line ◽  
Trait Loci

scholarly journals Quantitative Trait Loci for Adult-Plant Resistance to Mycosphaerella graminicola in Two Winter Wheat Populations

2011 ◽  
Vol 101 (10) ◽  
pp. 1209-1216 ◽  
Author(s):  
P. Risser ◽  
E. Ebmeyer ◽  
V. Korzun ◽  
L. Hartl ◽  
T. Miedaner
Keyword(s):  
Quantitative Trait Loci ◽  
Winter Wheat ◽  
Plant Height ◽  
Plant Resistance ◽  
Quantitative Trait ◽  
Adult Plant Resistance ◽  
Heading Date ◽  
Adult Plant ◽  
Phenotypic Variance ◽  
Trait Loci

Septoria tritici blotch (STB) is one of the most important leaf spot diseases in wheat worldwide. The goal of this study was to detect chromosomal regions for adult-plant resistance in large winter wheat populations to STB. Inoculation by two isolates with virulence to Stb6 and Stb15, both present in the parents, was performed and STB severity was visually scored plotwise as percent coverage of flag leaves with pycnidia-bearing lesions. ‘Florett’/‘Biscay’ and ‘Tuareg’/‘Biscay’, each comprising a cross of a resistant and a susceptible cultivar, with population sizes of 316 and 269 F7:8 recombinant inbred lines, respectively, were phenotyped across four and five environments and mapped with amplified fragment length polymorphism, diversity array technology, and simple sequence repeat markers covering polymorphic regions of ≈1,340 centimorgans. Phenotypic data revealed significant (P < 0.01) genotypic differentiation for STB, heading date, and plant height. Entry-mean heritabilities (h2) for STB were 0.73 for ‘Florett’/‘Biscay’ and 0.38 for ‘Tuareg’/‘Biscay’. All correlations between STB and heading date as well as between STB and plant height were low (r = –0.13 to –0.20). In quantitative trait loci (QTL) analysis, nine and six QTL were found for STB ratings explaining, together, 55 and 51% of phenotypic variation in ‘Florett’/‘Biscay’ and ‘Tuareg’/‘Biscay’, respectively. Genotype–environment and QTL–environment interactions had a large impact. Two major QTL were detected consistently across environments on chromosomes 3B and 6D from ‘Florett’ and chromosomes 4B and 6B from ‘Tuareg’, each explaining 12 to 17% of normalized adjusted phenotypic variance. These results indicate that adult-plant resistance to STB in both mapping populations was of a quantitative nature.

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