Fig. 3
From: Phalaenopsis pollinia storage at sub-zero temperature and its pollen viability assessment
Pollen germination rate of Phalaenopsis Little Gem Stripes after storage at four temperatures. In vitro pollen germination of P. Little Gem Stripes was evaluated by incubating pollinia in Brewbaker and Kwack medium after 7 days and then stained. Bars represent mean ± SE, n = 4. Pollen germination rank was represented by ranks: (0) no-germination; (1) 1–20%; (2) 21–40%; (3) 41–60%; (4) 61–80%; (5) 81–100%