scholarly journals Variation in heading date conceals quantitative trait loci for other traits of importance in breeding selection of rice

2012 ◽  
Vol 62 (3) ◽  
pp. 223-234 ◽  
Author(s):  
Kiyosumi Hori ◽  
Tomomori Kataoka ◽  
Kiyoyuki Miura ◽  
Masayuki Yamaguchi ◽  
Norikuni Saka ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Heading Date ◽  
Trait Loci ◽  
Breeding Selection ◽  
Selection Of

Fine mapping of quantitative trait loci Hd-1, Hd-2 and Hd-3, controlling heading date of rice, as single Mendelian factors

1998 ◽  
Vol 97 (1-2) ◽  
pp. 37-44 ◽  
Author(s):  
T. Yamamoto ◽  
Y. Kuboki ◽  
S. Y. Lin ◽  
T. Sasaki ◽  
M. Yano
Keyword(s):  
Quantitative Trait Loci ◽  
Fine Mapping ◽  
Quantitative Trait ◽  
Heading Date ◽  
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

Mapping quantitative trait loci controlling heading date in rice

2008 ◽  
pp. 238-240
Author(s):  
K. Fujino ◽  
T. Sato ◽  
H. Kiuchi ◽  
H. Kikuchi ◽  
Y. Nonoue ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Heading Date ◽  
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

Detection of quantitative trait loci for wheat (Triticum aestivum L.) heading and flowering date

2019 ◽  
Vol 157 (1) ◽  
pp. 20-30
Author(s):  
C. H. Zhao ◽  
H. Sun ◽  
C. Liu ◽  
G. M. Yang ◽  
X. J. Liu ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Genetic Relationships ◽  
Heading Date ◽  
Female Parent ◽  
Triticum Aestivum L ◽  
Wheat Breeding ◽  
Yield Potential ◽  
Flowering Date ◽  
Trait Loci

AbstractHeading date (HD) and flowering date (FD) are critical for yield potential and stability, so understanding their genetic foundation is of great significance in wheat breeding. Three related recombinant inbred line populations with a common female parent were developed to identify quantitative trait loci (QTL) for HD and FD in four environments. In total, 25 putative additive QTL and 20 pairwise epistatic effect QTL were detected in four environments. The additive QTL were distributed across 17 wheat chromosomes. Of these, QHd-1A, QHd-1D, QHd-2B, QHd-3B, QHd-4A, QHd-4B and QHd-6D were major and stable QTL for HD. QFd-1A, QFd-2B, QFd-4A and QFd-4B were major and stable QTL for FD. In addition, an epistatic interaction test showed that epistasis played important roles in controlling wheat HD and FD. Genetic relationships between HD/FD and five yield-related traits (YRTs) were characterized and ten QTL clusters (C1–C10) simultaneously controlling YRTs and HD/FD were identified. The present work laid a genetic foundation for improving yield potential in wheat molecular breeding programmes.

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.

A genetic linkage map of tetraploid orchardgrass (Dactylis glomerata L.) and quantitative trait loci for heading date

Genome ◽  
2012 ◽  
Vol 55 (5) ◽  
pp. 360-369 ◽  
Author(s):  
Wengang Xie ◽  
Joseph G. Robins ◽  
B. Shaun Bushman
Keyword(s):  
Quantitative Trait Loci ◽  
Linkage Map ◽  
Quantitative Trait ◽  
Genetic Linkage ◽  
Genetic Linkage Map ◽  
Heading Date ◽  
Dactylis Glomerata ◽  
Linkage Groups ◽  
Trait Loci ◽  
Dactylis Glomerata L

Orchardgrass ( Dactylis glomerata L.), or cocksfoot, is indigenous to Eurasia and northern Africa, but has been naturalized on nearly every continent and is one of the top perennial forage grasses grown worldwide. To improve the understanding of genetic architecture of orchardgrass and provide a template for heading date candidate gene search in this species, the goals of the present study were to construct a tetraploid orchardgrass genetic linkage map and identify quantitative trait loci associated with heading date. A combination of SSR markers derived from an orchardgrass EST library and AFLP markers were used to genotype an F1 population of 284 individuals derived from a very late heading Dactylis glomerata subsp. himalayensis parent and an early to mid-heading Dactylis glomerata subsp. aschersoniana parent. Two parental maps were constructed with 28 cosegregation groups and seven consensus linkage groups each, and homologous linkage groups were tied together by 38 bridging markers. Linkage group lengths varied from 98 to 187 cM, with an average distance between markers of 5.5 cM. All but two mapped SSR markers had homologies to physically mapped rice (Oryza sativa L.) genes, and six of the seven orchardgrass linkage groups were assigned based on this putative synteny with rice. Quantitative trait loci were detected for heading date on linkage groups 2, 5, and 6 in both parental maps, explaining between 12% and 24% of the variation.

scholarly journals Fine Mapping and Characterization of Quantitative Trait Loci Hd4 and Hd5 Controlling Heading Date in Rice

2003 ◽  
Vol 53 (1) ◽  
pp. 51-59 ◽  
Author(s):  
Hongxuan Lin ◽  
Zheng-Wei Liang ◽  
Takuji Sasaki ◽  
Masahiro Yano
Keyword(s):  
Quantitative Trait Loci ◽  
Fine Mapping ◽  
Quantitative Trait ◽  
Heading Date ◽  
Trait Loci
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