Bread wheat (T. aestivum) variability: Phenotypic and genotypic data from 75 varieties

Area of Science:

• Agricultural Science
• Plant Breeding
• Food Science

Background:

• Bread wheat quality for processing relies heavily on grain storage proteins, which form the gluten network essential for dough viscoelasticity.
• Understanding the diversity in protein content and composition is critical for improving end-use quality in milled wheat products.

Purpose of the Study:

• To investigate the genotypic and phenotypic variability of grain storage proteins in bread wheat accessions.
• To analyze the impact of genetic and environmental factors on traits related to wheat grain protein quality.

Main Methods:

• Phenotyping 75 bread wheat accessions for grain hardness, thousand-kernel weight, and nitrogen content.
• Characterizing flour protein composition using reverse-phase high-performance liquid chromatography (RP-HPLC) and asymmetric flow field-flow fractionation (AF4).
• Assessing dough technological properties with Glutomatic and Chopin alveograph systems, alongside genotyping with a 35k SNP array.

Main Results:

• The study generated a dataset encompassing raw data, protocols, and figures detailing genotypic and phenotypic variations.
• Significant variability was observed in grain protein content, composition, molecular distribution, and dough properties across different wheat accessions.
• The data provides a foundation for exploring the genetic architecture underlying wheat grain protein quality traits.

Conclusions:

• The generated dataset offers valuable insights into the diversity of bread wheat storage proteins.
• This resource can facilitate research into the genetic and environmental influences on wheat quality traits, aiding breeding programs.
• Understanding these variations is key to enhancing wheat processing suitability and end-product characteristics.