Fig. 5

The ranges of GHDs (a) and must °Brix (b) from 1935 to 1941 for recommended cultivars in California. The purple and green represent red and white cultivars respectively in the density plot. The trends of GHDs (c) and °Brix (d) for Cabernet Sauvignon, Merlot, Chardonnay, and Sauvignon Blanc during 1991–2018 in California.