Fig. 2

Microstructure analysis of starch in bamboo shoots at different growth and developmental stages. a Distribution of starch granules in the bamboo shoots via TEM (× 8000). The numbering in the upper left corner was the same as that in Fig. 1b. b Starch grain structure of bamboo shoots via TEM (× 25,000). the corresponds to the enlarged version, with arrows pointing to amyloplast proliferation. c Starch distribution of new buds on bamboo rhizomes via TEM. 1, 2, 3: new buds (× 2000) of one-year, two-year- and four-year-old rhizomes, respectively. 4, 5, 6: new buds of one-, two- and four-year-old rhizomes, respectively (× 8000). 7, 8, 9: new buds of one-, two- and four-year-old rhizomes, respectively (× 25,000). d Starch distribution of bamboo rhizomes via TEM. 1, 2, 3: One-r, two- and four-year-old bamboo rhizomes, respectively (× 2000). 4, 5, 6: One-, two- and four-year-old bamboo rhizomes, respectively (× 8000). 7, 8, 9: One-, two- and four-year-old bamboo rhizomes, respectively (× 25,000)