Inflorescence temperature influences fruit set, phenology, and sink strength of Cabernet Sauvignon grape berries.

ABSTRACT: The temperature during the bloom period leading up to fruit set is a key determinant of reproductive success in plants and of harvest yield in crop plants. However, it is often unclear whether differences in yield components result from temperature effects on the whole plant or specifically on the flower or fruit sinks. We used a forced-convection, free-air cooling and heating system to manipulate the inflorescence temperature of field-grown Cabernet Sauvignon grapevines during the bloom period. Temperature regimes included cooling (ambient -7.5°C), heating (ambient +7.5°C), an ambient control, and a convective control. Cooling significantly retarded the time to fruit set and subsequent berry development, and heating shortened the time to fruit set and accelerated berry development relativ

SUBMITTER: Keller M 

PROVIDER: S-EPMC9420974 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature