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Trihybrid Crosses02:27

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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).
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What is Meiosis?01:34

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Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also...
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Evaluation of Fertilization State by Tracing Sperm Nuclear Morphology in Arabidopsis Double Fertilization
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Doubled Haploids in Eggplant.

Ricardo Mir1, Antonio Calabuig-Serna1, Jose M Seguí-Simarro1

  • 1Cell Biology Group-COMAV Institute, Universitat Politècnica de València, 46011 Valencia, Spain.

Biology
|August 6, 2021
PubMed
Summary
This summary is machine-generated.

Doubled haploid (DH) production in eggplant is crucial for efficient breeding. Anther culture is effective, but isolated microspore culture is preferred to avoid somatic contamination, though both are genotype-dependent.

Keywords:
Solanum melongenaandrogenesisanther cultureauberginehaploidymicrospore culture

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Area of Science:

  • Plant breeding
  • Horticultural science
  • Genetics

Background:

  • Eggplant (Solanum melongena) is a globally cultivated crop valued for its fruit.
  • Traditional breeding relies on self-crossing for pure lines, a slow and costly method.
  • Doubled haploid (DH) technology offers a faster route to homozygous lines via haploid induction.

Purpose of the Study:

  • To review advancements in eggplant doubled haploid (DH) production techniques.
  • To discuss the application of DH technology in eggplant breeding programs.
  • To explore future directions for improving DH production efficiency and reducing genotype dependency.

Main Methods:

  • Review of existing literature on eggplant anther and microspore culture for DH production.
  • Analysis of genotype dependency and recalcitrance in eggplant DH induction.
  • Compilation of successful protocols and challenges in current methods.

Main Results:

  • Anther culture is currently the most viable method for eggplant DH production.
  • Isolated microspore culture is recommended to prevent somatic cell contamination, though it requires further optimization.
  • Eggplant exhibits moderate recalcitrance to DH production, with significant genotype-specific variations.

Conclusions:

  • Anther and microspore culture are key technologies for accelerating eggplant breeding through DH production.
  • Addressing genotype dependency is critical for broader application of DH technology in eggplant.
  • Future research should focus on developing more robust and less genotype-dependent DH induction methods.