Omics: a tool for resilient rice genetic improvement strategies

Rice is pivotal pyramid of about half of the world population. Bearing small genome size and worldwide utmost food crop rice has been known as ideal cereal crop for genome research. Currently, decreasing water table and soil fatigue are big challenges and intense consequences in changing climate. Wh...

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Bibliographic Details
Published in:Molecular biology reports 2022-06, Vol.49 (6), p.5075-5088
Main Authors: Naeem, Muhammad, Ali, Zeeshan, Khan, Anzal, Sami-Ul-Allah, Chaudhary, Hassan Javed, Ashraf, Javeria, Baloch, Faheem Shahzad
Format: Article
Language:English
Subjects:
Abiotic stress
Agricultural production
Animal Anatomy
Animal Biochemistry
Biomedical and Life Sciences
Cereals
Crops
Gene mapping
Genetic resources
Genetic variability
Genomes
Genomics
Halophytes
Histology
Life Sciences
Morphology
Nucleotide sequence
Quantitative trait loci
Review
Rice
Transcriptomics
Water table
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Summary:Rice is pivotal pyramid of about half of the world population. Bearing small genome size and worldwide utmost food crop rice has been known as ideal cereal crop for genome research. Currently, decreasing water table and soil fatigue are big challenges and intense consequences in changing climate. Whole sequenced genome of rice sized 389 Mb of which 95% is covered with excellent mapping order. Sequenced rice genome helps in molecular biology and transcriptomics of cereals as it provides whole genome sequence of indica and japonica sub species. Through rice genome sequencing and functional genomics, QTLs or genes, genetic variability and halophyte blocks for agronomic characters were identified which have proved much more useful in molecular breeding and direct selection. There are different numbers of genes or QTLs identified for yield related traits i.e., 6 QTLs/genes for plant architecture, 6 for panicle characteristics, 4 for grain number, 1 gene/QTL for tiller, HGW, grain filling and shattering. QTLS/genes for grain quality, biotic stresses and for abiotic stresses are 7, 23 and 13 respectively. Low yield, inferior quality and susceptibility to biotic and abiotic stresses of a crop is due to narrow genetic background of new evolving rice verities. Wild rice provides genetic resources for improvement of these characters, molecular and genomics tool at different stages can overcome these stresses and improve yield and quality of rice crop.
ISSN:0301-4851
1573-4978
DOI:10.1007/s11033-022-07189-4