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Related Concept Videos

Trihybrid Crosses02:27

Trihybrid Crosses

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 chance to...
Dihybrid Crosses01:18

Dihybrid Crosses

Overview
Monohybrid Crosses01:20

Monohybrid Crosses

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Seedless Vascular Plants03:24

Seedless Vascular Plants

Seedless Vascular Plants Were the First Tall Plants on Earth
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
Test Cross01:39

Test Cross

Alleles are different forms of the same gene. Humans and other diploid organisms inherit two alleles of every gene, one from each parent.

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Development of Targeting Induced Local Lesions IN Genomes (TILLING) Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
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Heterozygous microspore-derived plants in rye.

G Wenzel1, F Hoffmann, E Thomas

  • 1Projektgruppen Haploide in der Pflanzenzüchtung, Max-Planck-Institut für Pflanzengenetik, D-6802, Ladenburg-Rosenhof, Germany/BRD.

TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik
|March 4, 2011
PubMed
Summary
This summary is machine-generated.

Researchers induced plantlets from rye (Secale cereale L.) anthers, finding most were albino. A few green plants, likely from unreduced microspores, were identified as heterozygous diploids.

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Area of Science:

  • Plant Science
  • Genetics
  • Molecular Biology

Background:

  • Anther culture is a key technique for plant breeding and genetic studies.
  • Secale cereale L. (rye) is an important cereal crop with complex genetics.

Purpose of the Study:

  • To investigate microspore-derived plantlet formation in F(1) hybrid Secale cereale L.
  • To characterize the ploidy and genetic status of the resulting plantlets.
  • To explore the origin of green, diploid plantlets.

Main Methods:

  • Anther culture was performed on F(1) hybrid plants of Secale cereale L.
  • Microspore-derived plantlets were induced and visually screened for color (green vs. albino).
  • Ploidy levels (haploid, diploid) and heterozygosity of green plants were determined through screening.

Main Results:

  • Out of 68 induced plantlets, 61 were albino and 7 were green.
  • Six albino plants were haploid; most other albino plants were diploid.
  • All 7 green plants were diploid and heterozygous, suggesting derivation from unreduced microspores.

Conclusions:

  • The study identified a potential pathway for generating diploid, heterozygous plants from microspores in rye.
  • Unreduced microspores may contribute to diploid plant regeneration in Secale cereale L. anther culture.
  • This finding has implications for breeding strategies and understanding microspore embryogenesis in rye.