ArticleJournal of genetics2018
Marker-assisted introgression of opaque2 allele for rapid conversion of elite hybrids into quality protein maize.
Article in Journal of genetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed.
- Molecular dissection and functional characterization of the liguleless1 gene for manipulation of leaf angle in maize.Molecular genetics and genomics : MGG · 2026Article
- Introgression of teosinte branched1 gene from wild-progenitor enhances prolificacy in subtropically-adapted maize.Planta · 2026Article
- Sustainable improvement of single cross maize performance using vinasse-based biofertilizer.Scientific reports · 2026Article
- Dynamics of accumulation of lysine and tryptophan, and kernel modification in opaque2, opaque16, and double mutant (opaque2/opaque16) genotypes during kernel development in maize.Journal of applied genetics · 2025Article
- Enrichment of phytoglycogen in sweet corn kernels through genomics-assisted selection.Functional & integrative genomics · 2025Article
- Allelic Diversity and Development of Breeder-Friendly Marker Specific to floury2 Gene Regulating the Accumulation of α-Zeins and Essential Amino Acids in Maize Kernel.Biochemical genetics · 2025Article
- Enrichment of Vitamin A and Vitamin E in Sweet Corn Kernels Through Genomics-Assisted Introgression of Mutant Version of crtRB1 and vte4 Genes.Applied biochemistry and biotechnology · 2025Article
- Genomics-assisted stacking of waxy1, opaque2, and crtRB1 genes for enhancing amylopectin in biofortified maize for industrial utilization and nutritional security.Functional & integrative genomics · 2025Article
- Molecular characterization, haplotype analysis and development of markers specific to3 Biotech · 2024Article
- Review
- Enhancement of nutritional quality in maize kernel through marker-assisted breeding for vte4, crtRB1, and opaque2 genes.Journal of applied genetics · 2023Article
- Development of novel gene-based markers for waxy1 gene and their validation for exploitation in molecular breeding for enhancement of amylopectin in maize.Journal of applied genetics · 2023Article
- Provitamin A, lysine and tryptophan enrichment in shrunken2-based sweet corn genotypes through genomics-assisted breeding for crtRB1 and opaque2 genes.Molecular biology reports · 2023Article
- Expression Dynamics ofPlants (Basel, Switzerland) · 2023Article
- Marker-assisted selection for transfer of QTLs to a promising line for drought tolerance in wheat (Frontiers in plant science · 2023Article
- Pollen staining is a rapid and cost-effective alternative to marker-assisted selection for recessivePhysiology and molecular biology of plants : an international journal of functional plant biology · 2022Article
- Development of β-carotene, lysine, and tryptophan-rich maize (Zea mays) inbreds through marker-assisted gene pyramiding.Scientific reports · 2022Article
- Combining higher accumulation of amylopectin, lysine and tryptophan in maize hybrids through genomics-assisted stacking of waxy1 and opaque2 genes.Scientific reports · 2022Article
- Maize Endosperm Development: Tissues, Cells, Molecular Regulation and Grain Quality Improvement.Frontiers in plant science · 2022Review
- Marker-assisted transfer of leaf and stripe rust resistance fromFrontiers in genetics · 2022Article
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Maize is a valuable source of food and feed worldwide. Maize endosperm protein is, however nutritionally poor due to the reduced levels of two essential amino acids, lysine and tryptophan. In this study, recessive opaque2 (o2) allele that confers enhanced endosperm lysine and tryptophan, was introgressed using marker-assisted backcross breeding into three normal inbred lines (HKI323, HKI1105 and HKI1128). These are the parental lines of three popular medium-maturing single cross hybrids (HM4, HM8 and HM9) in India. Gene-based simple sequence repeat (SSR) markers (umc1066 and phi057) were successfully deployed for introgression of o2 allele. Background selection using genome-based SSRs helped in recovering > 96% of recurrent parent genome. The newly developed quality protein maize (QPM) inbreds showed modified kernels (25-50% opaqueness) coupled with high degree of phenotypic resemblance to the respective recipient lines, including grain yield. In addition, endosperm protein quality showed increased lysine and tryptophan in the inbreds to the range of 52-95% and 47-118%, respectively. The reconstituted QPM hybrids recorded significant enhancement of endosperm lysine (48-74%) and tryptophan (55-100%) in the endosperm. The QPM hybrids exhibited high phenotypic similarity with the original hybrids for morphological and yield contributing traits along with responses to some major diseases like turcicum leaf blight and maydis leaf blight. The grain yield of QPM hybrids was at par with their original versions under multilocation testing. These elite, high-yielding QPM hybrids with improved protein quality have been released and notified for commercial cultivation, and hold significant promise for improving nutritional security.
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