Quantitative trait loci regulate the concentrations of steryl ferulates in brown rice

2018 ◽  
Vol 95 (6) ◽  
pp. 800-810 ◽  
Author(s):  
Hiroshi Nakano ◽  
Toshiyuki Takai ◽  
Motohiko Kondo
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Brown Rice ◽  
Steryl Ferulates ◽  
Trait Loci

scholarly journals Identification and Verification of Quantitative Trait Loci Affecting Milling Yield of Rice

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 75 ◽  
Author(s):  
Hui Zhang ◽  
Yu-Jun Zhu ◽  
An-Dong Zhu ◽  
Ye-Yang Fan ◽  
Ting-Xu Huang ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Brown Rice ◽  
Yield Traits ◽  
Multiple Traits ◽  
Milled Rice ◽  
Milling Quality ◽  
Head Rice ◽  
Trait Loci ◽  
Milling Yield

Rice is generally consumed in the form of milled rice. The yield of total milled rice and head mill rice is affected by both the paddy rice yield and milling efficiency. In this study, three recombinant inbred line (RIL) populations and one F4:5 population derived from a residual heterozygous (RH) plant were used to determine quantitative trait loci (QTLs) affecting milling yield of rice. Seven traits were analyzed, including recovery of brown rice (BR), milled rice (MR) and head rice (HR); grain yield (GY); and the yield of brown rice (BRY), milled rice (MRY) and head rice (HRY). A total of 77 QTLs distributed on 35 regions was detected in the three RIL populations. Four regions, where qBR5, qBR7, qBR10, and qBR12 were located, were validated in the RH-derived F4:5 population. In the three RIL populations, all the 11 QTLs for GY detected were accompanied with QTLs for two or all the three milling yield traits. Not only the allele direction for milling yield traits was unchanged, but also the effects were consistent with GY. In the RH-derived F4:5 population, regions controlling GY also affected all three milling yield traits. Results indicated that variations of BRY and MRY were mainly ascribed to GY, but HRY was determined by both GY and HR. Results also showed that the regions covering GW5–Chalk5 and Wx loci had major effects on milling quality and milling yield of rice. These two regions, which have been known to affect multiple traits determining grain quality and yield of rice, provide good candidates for milled yield improvement.

QTL detection for rice grain quality traits using an interspecific backcross population derived from cultivated Asian (O. sativa L.) and African (O. glaberrima S.) rice

Genome ◽  
2004 ◽  
Vol 47 (4) ◽  
pp. 697-704 ◽  
Author(s):  
Jiming Li ◽  
Jinhua Xiao ◽  
Silvana Grandillo ◽  
Longying Jiang ◽  
Yizhen Wan ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Grain Quality ◽  
Brown Rice ◽  
Oryza Glaberrima ◽  
Rice Grain ◽  
Backcross Population ◽  
Advanced Backcross ◽  
Kernel Length ◽  
Trait Loci

An interspecific advanced backcross population derived from a cross between Oryza sativa 'V20A' (a popular male-sterile line used in Chinese rice hybrids) and Oryza glaberrima (accession IRGC No. 103544 from Mali) was used to identify quantitative trait loci (QTL) associated with grain quality and grain morphology. A total of 308 BC3F1 hybrid families were evaluated for 16 grain-related traits under field conditions in Changsha, China, and the same families were evaluated for RFLP and SSR marker segregation at Cornell University (Ithaca, N.Y.). Eleven QTL associated with seven traits were detected in six chromosomal regions, with the favorable allele coming from O. glaberrima at eight loci. Favorable O. glaberrima alleles were associated with improvements in grain shape and appearance, resulting in an increase in kernel length, transgressive variation for thinner grains, and increased length to width ratio. Oryza glaberrima alleles at other loci were associated with potential improvements in crude protein content and brown rice yield. These results suggested that genes from O. glaberrima may be useful in improving specific grain quality characteristics in high-yielding O. sativa hybrid cultivars.Key words: quantitative trait loci (QTL), grain quality, molecular markers, O. sativa, O. glaberrima.

Quantitative Trait Loci for Brown Rice Color, Phenolics, Flavonoid Contents, and Antioxidant Capacity in Rice Grain

2009 ◽  
Vol 86 (6) ◽  
pp. 609-615 ◽  
Author(s):  
Liang Jin ◽  
Peng Xiao ◽  
Yan Lu ◽  
Yafang Shao ◽  
Yun Shen ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Antioxidant Capacity ◽  
Quantitative Trait ◽  
Brown Rice ◽  
Rice Grain ◽  
Trait Loci

Identification of quantitative trait loci for Cd and Zn concentrations of brown rice grown in Cd-polluted soils

Euphytica ◽  
2011 ◽  
Vol 180 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Xiaoqin Zhang ◽  
Guoping Zhang ◽  
Longbiao Guo ◽  
Huizhong Wang ◽  
Dali Zeng ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Quantitative Trait ◽  
Brown Rice ◽  
Polluted Soils ◽  
Trait Loci
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