Bisexual flower ontogeny after chemical induction and berry characteristics evaluation in male Vitis amurensis Rupr.

Highlights: [•] Sex expression in male flowers of Amur grape appears to be sensitive to exogenous, applications of CPPU. [•] Pistil development of male flowers was arrested before 4-nucleate embryo sac. [•] CPPU accelerated pistil development of male flowers, and finally induced octonucleate maturing embryo sac. [•] Difference of berry characteristics in different male Amur grape lines was significant. [ABSTRACT FROM AUTHOR]