A complex reciprocal translocation is linked to reduced gamete viability in a loose-bunch grapevine somatic variant

This study identifies a heterozygous balanced reciprocal translocation linked to reduced gamete viability in a loose-bunch grapevine somatic variant with low fruit set. This finding suggests that genetic defects that reduce gamete viability might be selected in vegetatively propagated crops when decreased seed and fruit set confer agronomic benefits.