Stigma (Grape Vine)
Definition - What does Stigma mean in viticulture?
The stigma of a grape vine is part of the flower's reproductive system, specifically the part that receives pollen. In viticulture, the health and functionality of the stigma are vital for successful pollination, which ultimately leads to the development of grape berries. A healthy stigma is sticky, allowing it to capture and hold pollen that is transferred by wind or insects. This part of the grapevine is essential for the sexual reproduction process that generates genetic diversity in grape populations.
Vineyard Manager's Perspective on Stigma
Issues with the stigma, such as poor development or damage from environmental factors, can lead to unsuccessful pollination and hence poor fruit set, which is the transition from flower to berry. In viticulture, understanding the conditions that lead to optimal stigma health is part of managing a vineyard for maximum fruit quality and yield. The grapevine's flowering stage is thus monitored closely, and practices such as canopy management are employed to ensure that the flowers, and specifically the stigmas, are in the best possible condition for pollination.
