Validation and Dissection of Minor QTL 
            <i>qTGW1.2</i> for Thousand-Grain Weight in Chromosome 1 of Rice ( 
            <i>Oryza sativa</i> L.)

陈玉宇,; 朱玉君,; 张宏伟,; 王琳琳,; 樊叶杨,; 庄杰云,

doi:10.3724/sp.j.1006.2014.00761

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, only a few minor QTLs were cloned due to the easily affected by environment and genetic background (Hori et al 2016 ; Chen et al 2018 ; Chan et al 2021 ). Some reports indicated that the minor QTL can be detected stably when the genetic background is highly homozygous (Chen et al 2014 ; Wang et al 2019 ). Therefore, minor QTL can be verified and decomposed, and even further fine mapped and cloned under high homogeneity genetic background.…”

Section: Discussionmentioning

confidence: 99%

“…By developing multiple NILs covering different interval segments, substitution mapping can be employed to effectively dissect the QTL (Paterson et al 1990 ). Using the method of substitution mapping, minor QTL for 1,000 grains weight including qTGW1.2a and qTGW1.2b were fine-mapped, and the candidate gene of qTGW1.2b was confirmed (Chen et al 2014 ; Wang et al 2019 ) . Similary, the QTL of aerobic adaptation, qAER1, qAER3 and qAER9 , were verified and fine-mapped (Xu et al 2020 ).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Three QTL from Oryza meridionalis Could Improve Panicle Architecture in Asian Cultivated Rice

Yang

et al. 2023

Rice

View full text Add to dashboard Cite

Rice panicle architecture is directly associated with grain yield and is also the key target in high-yield rice breeding program. In this study, three BC6F2 segregation populations derived from the crosses between two accessions of Oryza meridionalis and a O. sativa spp. japonica cultivar Dianjingyou 1, were employed to map QTL for panicle architecture. Three QTL, EP4.2, DEP7 and DEP8 were identified and validated using substitution mapping strategy on chromosome 4, 9 and 8, respectively. The three QTL showed pleiotropic phenotype on panicle length (PL), grain number per panicle (GNPP), number of primary branches (NPB), number of secondary branches (NSB), and grain width. DEP7 and DEP8 showed yield-enhancing potential by increasing GNPP, NPB and NSB, while EP4.2 exhibited wide grain, short stalk and panicle which can improve plant and panicle architecture, too. Moreover, epistatic interaction for PL was detected between EP4.2 and DEP7, and epistatic analysis between DEP7 and DEP8 for GNPP and NPB also revealed significant two QTL interactions. The result would help us understand the molecular basis of panicle architecture and lay the foundation for using these three QTL in rice breeding.

show abstract