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Related Concept Videos

Trihybrid Crosses02:27

Trihybrid Crosses

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Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
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Dihybrid Crosses

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Related Experiment Video

Updated: Sep 17, 2025

Identifying Mutations by High Resolution Melting in a TILLING Population of Rice
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QTL mapping for yield contributing traits in mungbean (Vigna radiata L.) using a RIL population.

Shashidhar B Reddappa1, Muralidhar S Aski1, Gyan P Mishra2

  • 1Division of Genetics, Indian Agricultural Research Institute, New Delhi, 110012, India.

Scientific Reports
|July 2, 2025
PubMed
Summary
This summary is machine-generated.

Researchers mapped quantitative trait loci (QTLs) in mungbean to understand the genetic basis of yield. This study identified 17 QTLs for key traits, aiding in developing high-yielding mungbean varieties.

Keywords:
Candidate genesComposite interval mappingGenotyping by sequencingMultiple interval mappingYield traits

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Area of Science:

  • Genetics
  • Plant Breeding
  • Agricultural Science

Background:

  • Mungbean (Vigna radiata L.) is a vital leguminous crop with under-explored genomics.
  • Low productivity is linked to complex yield traits, necessitating genetic understanding for improvement.

Purpose of the Study:

  • To map quantitative trait loci (QTLs) for six yield-contributing traits in mungbean.
  • To identify genetic markers for enhancing mungbean yield and related traits.

Main Methods:

  • Developed a recombinant inbred line (RIL) population from a cross between contrasting mungbean genotypes.
  • Constructed a genetic map using genotyping-by-sequencing (GBS) and 1347 single nucleotide polymorphisms (SNPs).
  • Employed Multiple Interval Mapping (MIM) and Composite Interval Mapping (CIM) for QTL analysis.

Main Results:

  • Identified 17 significant QTLs across traits: number of leaves/plant (4), plant height (3), SPAD value (2), 100 seed weight (3), number of pods/plant (2), and total grain yield (3).
  • QTLs showed Logarithm of Odds (LOD) scores ranging from 3-9 and explained 9-24% of phenotypic variance.
  • Identified candidate genes involved in growth, flowering, and metabolism, validated via digital gene expression analysis.
  • Developed Insertion-Deletion (InDel) markers for identified QTLs.

Conclusions:

  • The identified QTLs and developed markers provide a foundation for marker-assisted selection in mungbean breeding.
  • Understanding the genetic architecture of yield traits is crucial for developing improved mungbean varieties.
  • This research contributes to the genomic resources for enhancing mungbean productivity.