Figure 2.
Macroscopic (A–H) and microscopic (I–P) evaluation of two representative Vitis genotypes from each level of B. cinerea resistance, respectively. Highly susceptible “Red Globe” (V. Vinifera) and “Beichun” (V. Vinifera × V. amurensis Rupr) are shown in (A,I) and (E,M), respectively. Red arrows in (I,M) show new sporulation events at sites indicated. Susceptible V. davidii var. “Zhenan-3” and V. romanetii “Pingli-2” are shown in (B,J) and (F,N), respectively. V. quinquangularis “83-4-85” and V piasezkii “Gansu-91” represent resistant genotypes and are shown in (C,K) and (G,O), respectively. V. amurensis “Tonghua-3” and V. sp. (Qinling grape) “Pingli-5” are highly resistant and are shown in (D,L) and (H,P), respectively. Scale bars: (I,J,M,N): 50 μm; (K,L,O,P): 20 μm. One representative leaf of three biological replicates is shown for each time point. Samples were collected 4 days after inoculation.