Fig. 2

Aspects of T. chinensis Rehd. var. mairei callus induction from mature endosperm. a Endosperm callus induction on B₅ medium for 5 days (bar 1 mm). b Endosperm callus induction on B₅ medium for 10 days (bar 1 mm). c Endosperm callus induction on B₅ medium for 18 days (bar 1 mm). d Endosperm callus induction on B₅ medium for 23 days (bar 2 mm). e Endosperm callus induction on B₅ medium for 30 days (bar 2 mm). f Endosperm callus subculture on the proliferation culture medium