IVES 9 IVES Conference Series 9 Open-GPB 9 Open-GPB-2024 9 Category: Poster - Advances in precision viticulture and phenotyping ( Page 2 )

Poster – Advances in precision viticulture and phenotyping

IVES Conference SeriesOpen-GPBOpen-GPB-2024Poster - Advances in precision viticulture and phenotyping

Rootstock x environment interaction shapes shoot system phenotypic variation in grafted ‘Chambourcin’

Recent advances in phenomics and transcriptomics have the enhanced capacity for understanding how clonally propagated perennial crops like grapevines respond to their environments seasonally and over the course of multiple years. Because most grapevines are grafted, above-ground grapevine traits reflect scion genotype and its interaction with the local environment. In addition, traits expressed by the scion reflect rootstock genotype and how that rootstock is interacting with its environment seasonally and across years. To investigate rootstock x environment interaction on shoot systems in grafted grapevines we characterized comprehensive phenotypic variation in an experimental vineyard in Mount Vernon, Missouri, USA where the grapevine cultivar ‘Chambourcin’ is growing on its own roots and is grafted to three different rootstocks (‘1103P’, ‘3309C’, ‘SO4’).

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IVES Conference SeriesOpen-GPBOpen-GPB-2024Poster - Advances in precision viticulture and phenotyping

Techniques for sunburn reduction in bunches in Vitis vinifera L. cv. Graciano

Sunburn results from a combination of excessive photosynthetically active radiation (PAR) and UV radiation and temperature that can be exacerbated by other stress factors such as water deficit. Sunburn is a physiological disorder that affects the visual and organoleptic properties of grapes. The appearance of brown and necrotic spots severely affects the commercial value of the fruit, and in extreme cases, significantly decreases yield. This damage occurs with some frequency in sensitive varieties such as Graciano.

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