Grapevine Witch's Broom Bud Sport Genetics
Witch's Broom is a recurring bud sport in grapevine that causes severe developmental defects. Two independent cases of Witch's Broom were identified, one in the Merlot variety and one in the Dakapo variety. Both cases and their wild-type counterparts were sequenced using Illumina and Oxford Nanopore sequencing to identify genetic variants and a potential genetic basis.