Genetic and Molecular Research on Rice Grain Yield
A special issue of Agronomy (ISSN 2073-4395).
Deadline for manuscript submissions: 30 November 2024 | Viewed by 5506
Special Issue Editors
Interests: molecular breeding; yield-related trait; flowering time; map-based cloning; QTL; genome editing; genetic interaction
Special Issues, Collections and Topics in MDPI journals
Interests: gene identification; genome editing; molecular breeding; rice
Special Issues, Collections and Topics in MDPI journals
Interests: rice; synthetic apomixis; haploid breeding; QTL; genome editing
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The ever-growing world population is driving increases in global food demand. Shrinking farmland, climate change and disease incidence also threaten crop production. Rice (Oryza sativa L.) is one of the most important food crops in the world today, and serves as a staple food source for more than half of the world’s population. Raising rice grain yield potential is crucial for ensuring future food security. The intensive development and application of biotechnologies such as genome assembly, germplasm characterization, transformation and genome editing have greatly facilitated the genetic analysis and functional gene mining of rice germplasm resources. A number of genes/QTLs for yield-related traits have been identified. However, more efforts are needed to decipher the genetic basis of these key agronomic traits in order to improve rice grain yield potential. This Special Issue aims to provide a forum for presenting the most recent advances in genetic and molecular research on yield-related traits in rice. We seek original research articles and reviews covering all related topics, including genome-wide association studies (GWASs), quantitative trait loci (QTLs) mapping, map-based cloning, omics analysis, functional marker-assisted selection, etc., in the context of rice grain yield.
Potential topics include, but are not limited to: the identification of QTLs/genes for yield traits; genetic interaction involved in yield traits; genetic mechanism of trade-off among yield traits; genetic analysis of rice yield under biotic and abiotic stress; application of QTLs/genes for yield traits through marker-assisted selection in breeding practice; and the creation of new rice germplasm using genome editing.
Dr. Yu-Jun Zhu
Dr. Zhen-Hua Zhang
Dr. Chaolei Liu
Guest Editors
Manuscript Submission Information
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Keywords
- rice yield-related traits
- GWAS
- QTLs mapping
- map-based cloning
- multi-omics
- marker-assisted selection
- genome editing
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Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Development of specific molecular marker haploid inducers in rice
Authors: Wang Jian †1, Yan Huijing†1,2, Jiao Xiaozhen1, Ren Jun1, Hu Fengyue 1, Liang Huan1, Liu Chaolei1*
Affiliation: State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou, 310006,
China
Abstract: Background: Doubled haploid (DH) technology is an efficient strategy to produce completely
homozygous lines for breeding programs. Mutation of MATRILINEAL (MTL) triggers intraspecific
haploid induction in the cereals. Though in vivo haploid induction system based on OsMTL-edited
plants has been established in rice (Oryza sativa), DH technology is still limited by other factors,
such as haploid identification, one of the main steps required for DH technology. Haploid
identification efficiency is determined by haploid inducers, but no marker-based haploid inducers
have been developed in rice yet. Results: Here, we generated large fragment insertion or deletion
mutations within the OsMTL gene, and designed pair of primers flanking the mutational sites to use
as insertion/deletion (InDel) markers between wild type and Osmtl plants. By crossing cytoplasmic
male sterile lines with the large insertion/deletion Osmtl haploid inducers, we rapidly identified the
haploids or double haploids by using the specific InDel marker on agarose gel electrophoresis
analysis, with haploid induction rate (HIR) ranging from 6.4% to 10.6%. Conclusion: We have
successfully introduced specific molecular markers into rice haploid inducers. Considering that
number of female parents are used in the DH breeding program, our system of using simple InDel
markers would greatly improve the efficiency of haploid identification, and accelerate the use of
DH technology in rice breeding