389723.fig.003a
(a)
389723.fig.003b
(b)
389723.fig.003c
(c)
389723.fig.003d
(d)
Figure 3: Total vitB6 content in potato tubers based on a yeast bioassay. (a) Extracts from lyophilized baby potato tubers. (b) Mature potatoes, and ((c), (d)) vitB6 content in two cultivars after long-term, low-temperature storage. Letters indicate skin (first capital letter) and flesh color (second capital letter). Pi: pink; Pu: purple; Pr: pink red; R: red; Ru: Russet, W: white; Y: yellow; Yp: Yellow with pink eyes; Yr: yellow with red eyes.