Identification of Quantitative Trait Loci Associated with Nutrient Use Efficiency Traits, Using SNP Markers in an Early Backcross Population of Rice (Oryza sativa L.)

International Journal of Molecular Sciences
Zilhas Ahmed JewelZhi-Kang Li

Abstract

The development of rice cultivars with nutrient use efficiency (NuUE) is highly crucial for sustaining global rice production in Asia and Africa. However, this requires a better understanding of the genetics of NuUE-related traits and their relationship to grain yield. In this study, simultaneous efforts were made to develop nutrient use efficient rice cultivars and to map quantitative trait loci (QTLs) governing NuUE-related traits in rice. A total of 230 BC₁F₅ introgression lines (ILs) were developed from a single early backcross population involving Weed Tolerant Rice 1, as the recipient parent, and Hao-an-nong, as the donor parent. The ILs were cultivated in field conditions with a different combination of fertilizer schedule under six nutrient conditions: minus nitrogen (⁻N), minus phosphorus (⁻P), (⁻NP), minus nitrogen phosphorus and potassium (⁻NPK), 75% of recommended nitrogen (75N), and NPK. Analysis of variance revealed that significant differences (p < 0.01) were noted among ILs and treatments for all traits. A high-density linkage map was constructed by using 704 high-quality single nucleotide polymorphism (SNP) markers. A total of 49 main-effect QTLs were identified on all chromosomes, except on chromosome 7, 11 an...Continue Reading

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Citations

Jun 4, 2019·International Journal of Molecular Sciences·Pedro Martínez-Gómez
Jan 10, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Sibin YuQifa Zhang
Jan 11, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Zhihua ZhangChengcai Chu
Jun 22, 2021·Frontiers in Plant Science·Nitika SandhuParveen Chhuneja

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Methods Mentioned

BETA
genotyping
soil stress

Software Mentioned

MapChart
Genome Studio
R
SPSS
QTL IciMapping
IciMapping

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