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Marker-assisted selection for grain number and yield-related traits of rice (Oryza sativa L.)

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Abstract

Continuous rise in the human population has resulted in an upsurge in food demand, which in turn demand grain yield enhancement of cereal crops, including rice. Rice yield is estimated via the number of tillers, grain number per panicles, and the number of spikes present per panicle. Marker-assisted selection (MAS) serve as one of the best ways to introduce QTLs/gene associated with yield in the rice plant. MAS has also been employed effectively in dissecting several other complex agricultural traits, for instance, drought, cold tolerance, salinity, etc. in rice plants. Thus, in this review, authors attempted to collect information about various genes/QTLs associated with high yield, including grain number, in rice and how different scheme of MAS can be employed to introduce them in rice (Oryza sativa L.) plant, which in turn will enhance rice yield. Information obtained to date suggest that, numerous QTLs, e.g., Gn1a, Dep1, associated with grain number and yield-related traits, have been identified either via mapping or cloning approaches. These QTLs have been successfully introduced into rice plants using various schemes of MAS for grain yield enhancement in rice. However, sometimes, MAS does not perform well in breeding, which might be due to lack of resources, skilled labors, reliable markers, and high costs associated with MAS. Thus, by overcoming these problems, we can enhance the application of MAS in plant breeding, which, in turn, may help us in increasing yield, which subsequently may help in bridging the gap between demand and supply of food for the continuously growing population.

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Abbreviations

AFLP:

Amplified fragment length polymorphism

BC:

Back cross

BILs:

Backcross inbred lines

CAPS:

Cleaved amplified polymorphic sequences

GDP:

Gross domestic product

GPP:

Grain number per panicle

HD:

Heading date

MABB:

Marker assisted backcross breeding

MAP:

Marker assisted gene pyramiding

MAS:

Marker assisted selection

MDP:

Marker data point

mha:

Million hector

NILs:

Near isogenic lines

PH:

Plant height

QTL:

Quantitative trait loci

RAPD:

Randomly amplified polymorphic DNA

RFLP:

Restriction fragment length polymorphism

RILs:

Recombinant inbred lines

SCAR:

Sequence characterized amplified region

SNP:

Single-nucleotide polymorphism

SPP:

Spikelet per panicle

SSR:

Simple sequence repeat

STS:

Sequence-tagged site

UTR:

Untranslated region

VNTR:

Variable number of tandem repeats

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Funding

The authors acknowledge the Department of Science and Technology (DST), Government of India, New Delhi, for providing financial assistance through Grant number: DST/INSPIRE Fellowship/2013/992 to Inspire Fellow Miss. Gayatri Gouda

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Correspondence to Lambodar Behera.

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Gouda, G., Gupta, M.K., Donde, R. et al. Marker-assisted selection for grain number and yield-related traits of rice (Oryza sativa L.). Physiol Mol Biol Plants 26, 885–898 (2020). https://doi.org/10.1007/s12298-020-00773-7

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  • DOI: https://doi.org/10.1007/s12298-020-00773-7

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