Annotation:
This study explores a top-crossing strategy to broaden the genetic base of wheat using
Aegilops comosa. Detailed cytogenetic analyses revealed selective elimination and rearrangement of alien and wheat chromosomes. Frequent homoeologous recombinations enabled the development of diverse introgression, substitution, and translocation lines. Several alien chromosomes showed good compensation for missing wheat chromosomes without yield penalties. These newly developed pre-breeding materials represent valuable genetic resources for future wheat improvement.
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