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Determine the functional role and distribution of the TaCol-B5 gene in regulating spike architecture and grain yield in wheat varieties.

April 7, 2022Science

TaCol-B5 modifies spike architecture and enhances grain yield in wheat

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Determine the functional role and distribution of the TaCol-B5 gene in regulating spike architecture and grain yield in wheat varieties.
Screened a global collection of modern wheat cultivars and ancestral emmer wheat accessions for TaCol-B5 allelic variation.
Assessed spike architecture traits and agronomic yield parameters associated with the TaCol-B5 allele.
Demonstrated that the TaCol-B5 allele alters spike architecture and substantially enhances overall grain yield.
Observed that while the beneficial allele is present in ancestral emmer wheat, it remains exceedingly rare in modern wheat cultivars.

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Genetic analysis reveals TaCol-B5 modifies spike architecture and increases grain yield in wheat, suggesting untapped potential for crop breeding.

allele is present in emmer wheat but is rare in a global collection of modern wheat cultivars.

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Zhang et al. (2022) studied this question.

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Genetic analysis reveals TaCol-B5 modifies spike architecture and increases grain yield in wheat, suggesting untapped potential for crop breeding.

allele is present in emmer wheat but is rare in a global collection of modern wheat cultivars.