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Scientists at the Bragato Research Institute in Marlborough, New Zealand, have sequenced 6,000 genetic variants of Sauvignon Blanc. The researchers' aim is to make the grape variety more resistant to climate change. Sauvignon Blanc is by far New Zealand's most important grape variety. The vines are currently in a nursery and will be planted in a research vineyard before the end of spring 2023.
"There are 26,559 hectares in New Zealand Sauvignon Blanc. Because of the method of propagation, the vast majority of these vines are genetically identical," said an Institute spokesperson. Consequently, any new pest, disease or environmental change could affect all the vines. The programme to research more resistant clones is set to last seven years.
"Plants have the natural ability to become more genetically diverse in response to environmental stress. We have used this knowledge to produce vines with unique traits," explains lead scientist Dr Darrell Lizamore.
Since they are not crosses with other vines, they are still Sauvignon Blanc vines. The new variants are already fully formed in the first generation. By comparing the DNA with the help of sequencing methods, each vine can be examined. In this way, it is possible to identify those that adapt best to the changing climate. Traits such as improved yields, disease resistance, frost tolerance and efficient water use were taken into account. However, the typical taste profile of the Marlborough Sauvignon Blanc should be preserved, the researchers emphasised.
(ru / Source: Harpers)