What is the fine-grained topic of the following text: The Scagliolo Maize of Carenno, a small village in the province of Lecco - east of the south-eastern branch of Lake Como - is an example of a local variety superseded by strong and productive hybrids, thanks to the joint efforts of Bergamo’s Cereal Production Research Centre and the Eastern Lake Como-San Martino Valley Mountain Board, the latter of which began protecting the Scagliolo maize and other cultivars by means of in-situ conservation. Only return the topic.
Conservation of the Scagliolo Maize in Carenno