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Related Concept Videos

Plant Tissue Culture02:57

Plant Tissue Culture

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Plant tissue culture is widely used in both primary and applied science. Applications range from plant development studies to functional gene studies, crop improvement, commercial micropropagation, virus elimination, and conservation of rare species.
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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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During meiosis, chromosomes occasionally separate improperly. This occurs due to failure of homologous chromosome separation during meiosis I or failed sister chromatid separation during meiosis II. In some species, notably plants, nondisjunction can result in an organism with an entire additional set of chromosomes, which is called polyploidy. In humans, nondisjunction can occur during male or female gametogenesis and the resulting gametes possess one too many or one too few chromosomes.
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Related Experiment Video

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Manipulation of Ploidy in Caenorhabditis elegans
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Synthetic Polyploidy in Grafted Crops.

Marta Ruiz1,2, Julie Oustric3, Jérémie Santini3

  • 1Centro de Protección Vegetal y Biotecnología, Instituto Valenciano de Investigaciones Agrarias, Moncada, Spain.

Frontiers in Plant Science
|November 23, 2020
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Summary

Artificial polyploidy enhances crop traits like yield and stress adaptation, particularly in grafted systems. Further research is needed to understand mechanisms and overcome limitations for wider agronomic application.

Keywords:
graftingpolyploidrootstockscionstress tolerance

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Area of Science:

  • Plant breeding
  • Genetics
  • Agronomy

Background:

  • Synthetic polyploids are increasingly studied for crop improvement.
  • Polyploidization modifies plant phenotypes, offering potential for trait enhancement.
  • Understanding polyploidy's mechanisms and effects is crucial for its agronomic use.

Purpose of the Study:

  • To review the use of artificial polyploidy in rootstock and scion improvement.
  • To explore the implications of combining polyploid rootstocks and scions.
  • To provide insights into methods, limitations, and agronomic relevance of artificial polyploids.

Main Methods:

  • Review of current and prospective applications of artificial polyploidy.
  • Analysis of polyploidy's effects on crop phenotype (anatomy, function, quality, yield, stress adaptation).
  • Consideration of polyploid breeding methods and selection strategies.

Main Results:

  • Polyploid breeding can improve specific crop traits like quality, yield, and environmental adaptation.
  • Grafted crops offer unique opportunities to exploit polyploidy at rootstock and/or scion levels.
  • Synthetic tetraploid rootstocks show potential for enhanced stress adaptation in perennial crops.

Conclusions:

  • Artificial polyploidy holds significant potential for improving rootstocks and scions, especially in grafted systems.
  • Further research is needed to understand the underlying mechanisms and address limitations for commercial adoption.
  • Polyploid breeding, particularly in the context of climate change, offers promising avenues for crop enhancement.