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Film Extrusion of Crambe abyssinica/Wheat Gluten Blends

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Sequence divergence between spelt and common wheat.

Miao Liu^1,2,3, Qiang Zhao⁴, Feng Qi⁴

¹CSIRO Agriculture and Food, 306 Carmody Road, St Lucia, QLD, 4067, Australia.

TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik

|February 11, 2018

Summary

Spelt wheat (Triticum spelta) offers significant genetic variation to improve common wheat (Triticum aestivum L). This study found tenfold higher variants in spelt, highlighting its potential for crop enhancement.

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Area of Science:

Plant genetics
Crop science
Genomics

Background:

Genetic variation is crucial for crop improvement.
Common wheat (Triticum aestivum L.) breeding relies on diverse genetic resources.
Spelt wheat (Triticum spelta) is considered closely related to common wheat.

Purpose of the Study:

To compare the genome sequences of spelt and common wheat.
To quantify the genetic variation between Triticum spelta and Triticum aestivum L.
To assess the potential of spelt wheat in enriching common wheat's genetic diversity.

Main Methods:

Genome sequence comparison between a Triticum spelta accession, its derived hexaploid line, and the Chinese Spring reference genotype.
Analysis of sequence variant distribution along wheat chromosomes.
Genetic analysis to determine evolutionary relationships.

Main Results:

Detected over tenfold higher sequence variants in spelt compared to common wheat genotypes.
Observed an even distribution of sequence variation along the 3B chromosome in spelt, unlike the typical 'V-shaped' pattern.
Genetic analysis revealed discrete groupings for T. spelta and common wheat, indicating significant sequence divergence.

Conclusions:

Spelt wheat possesses substantial genetic variation valuable for common wheat improvement.
Significant sequence divergence exists between spelt and common wheat, despite their close evolutionary relationship.
Triticum spelta represents a key resource for enhancing the genetic diversity of Triticum aestivum L.