Two quantitative trait loci for grain yield and plant height on chromosome 3 are tightly linked in coupling phase in rice

2015 ◽  
Vol 35 (8) ◽  
Author(s):  
Bi Wu ◽  
Donghai Mao ◽  
Toumin Liu ◽  
Zhixin Li ◽  
Yongzhong Xing
Keyword(s):  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Plant Height ◽  
Quantitative Trait ◽  
Chromosome 3 ◽  
Coupling Phase ◽  
Trait Loci

Mapping quantitative trait loci controlling agronomic traits in the spring wheat cross RL4452 × 'AC Domain'

Genome ◽  
2005 ◽  
Vol 48 (5) ◽  
pp. 870-883 ◽  
Author(s):  
C A McCartney ◽  
D J Somers ◽  
D G Humphreys ◽  
O Lukow ◽  
N Ames ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Plant Height ◽  
Quantitative Trait ◽  
Agronomic Traits ◽  
Grain Weight ◽  
Test Weight ◽  
Trait Loci ◽  
1000 Grain Weight

Relatively little is known about the genetic control of agronomic traits in common wheat (Triticum aestivum L.) compared with traits that follow Mendelian segregation patterns. A doubled-haploid population was generated from the cross RL4452 × 'AC Domain' to study the inheritance of the agronomic traits: plant height, time to maturity, lodging, grain yield, test weight, and 1000-grain weight. This cross includes the genetics of 2 western Canadian wheat marketing classes. Composite interval mapping was conducted with a microsatellite linkage map, incorporating 369 loci, and phenotypic data from multiple Manitoba environments. The plant height quantitative trait loci (QTLs), QHt.crc-4B and QHt.crc-4D, mapped to the expected locations of Rht-B1 and Rht-D1. These QTLs were responsible for most of the variation in plant height and were associated with other agronomic traits. An additional 25 agronomic QTLs were detected in the RL4452 × 'AC Domain' population beyond those associated with QHt.crc-4B and QHt.crc-4D. 'AC Domain' contributed 4 alleles for early maturity, including a major time to maturity QTL on 7D. RL4452 contributed 2 major alleles for increased grain yield at QYld.crc-2B and QYld.crc-4A, which are potential targets for marker-assisted selection. A key test weight QTL was detected on 3B and prominent 1000-grain weight QTLs were identified on 3D and 4A.Key words: height, lodging, mapping, maturity, microsatellite markers, test weight, 1000-grain weight, Triticum aestivum, wheat, yield.

scholarly journals Mapping of Quantitative Trait Loci for Traits linked to Fusarium Head Blight Symptoms Evaluation In Barley RILs

2019 ◽  
Author(s):  
Piotr Ogrodowicz ◽  
Anetta Kuczyńska ◽  
Krzysztof Mikołajczak ◽  
Tadeusz Adamski ◽  
Maria Surma ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Fusarium Head Blight ◽  
Plant Height ◽  
Quantitative Trait ◽  
Spring Barley ◽  
Phenotypic Traits ◽  
Head Blight ◽  
Trait Loci ◽  
Barley Genotypes

AbstractFusarium head blight (FHB) is a devastating disease in small grain cereals worldwide. The disease results in the reduction of grain yield and affects its quality. In addition, mycotoxins accumulated in grain are harmful to both humans and animals. It has been reported that response to pathogen infection may be associated with the morphological and developmental characteristics of the host plant, e.g. the earliness and plant height. Despite the many studies the effective markers for the selection of barley genotypes with increased resistance to FHB have not thus far been developed. Therefore, exploring the genetic relationship between agronomic traits (e.g. heading date or stem height) and disease resistance is of importance to the understanding of plant resistance via “diesease escape” or dwarf stature. The studied plant material consisted of 100 recombinant inbred lines (RIL) of spring barley. Plants were examined in field conditions (three locations) in a completely randomized design with three replications. Barley genotypes were artificially infected with spores of Fusarium before heading. Apart from the main phenotypic traits (plant height, spike characteristic, grain yield) the infected kernels were visually scored and the content of deoxynivalenol (DON) mycotoxin was investigated. A set of 70 Quantitative Trait Loci (QTLs) were detected through phenotyping of the mapping population in field condition and genotyping using a barley Ilumina iSelect platform with 9K markers. Six loci were detected for FHB index on chromosomes 2H, 3H, 5H and 7H. The region on the short arm of the 2H chromosome was detected in the current study, in which many QTLs associated with FHB- and yield-related characters were found. This study confirms that agromorphological traits are tightly related to the FHB and should be taken into consideration when breeding barley plants for FHB resistance.

scholarly journals Quantitative Trait Loci for Grain Yield and Adaptation of Durum Wheat (Triticum durumDesf.) Across a Wide Range of Water Availability

Genetics ◽  
2008 ◽  
Vol 178 (1) ◽  
pp. 489-511 ◽  
Author(s):  
Marco Maccaferri ◽  
Maria Corinna Sanguineti ◽  
Simona Corneti ◽  
José Luis Araus Ortega ◽  
Moncef Ben Salem ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Durum Wheat ◽  
Water Availability ◽  
Quantitative Trait ◽  
Wide Range ◽  
Trait Loci

Correlations and comparisons of quantitative trait loci with family per se and testcross performance for grain yield and related traits in maize

2012 ◽  
Vol 126 (3) ◽  
pp. 773-789 ◽  
Author(s):  
Bo Peng ◽  
Yongxiang Li ◽  
Yang Wang ◽  
Cheng Liu ◽  
Zhizhai Liu ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Grain Yield ◽  
Quantitative Trait ◽  
Testcross Performance ◽  
Trait Loci ◽  
Per Se

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
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