Protoplast isolation
From embryogenic callus or suspension culture, cells used
for protoplast isolation should be in the log phase of
growth, with best results using suspension cells from 4 to
12 days into the 2 week subculture cycle. Transfer 1–2 g
friable callus tissue into a 60 9 15 mm petri dish (for
suspension, transfer approximately 2 ml suspension with a
wide-mouth pipette and drain off the liquid using a Pasteur
pipette). Resuspend the cells in 2.5 ml 0.7 M BH3 medium
(Table 2; BH3 ? 34 g/l sucrose) and then add 1.5 ml of
filter sterilized Enzyme Solution containing 0.7 M mannitol,
12.0 mM CaCl2, 6.0 mM MES buffer, 1.4 mM
Protoplast isolationFrom embryogenic callus or suspension culture, cells usedfor protoplast isolation should be in the log phase ofgrowth, with best results using suspension cells from 4 to12 days into the 2 week subculture cycle. Transfer 1–2 gfriable callus tissue into a 60 9 15 mm petri dish (forsuspension, transfer approximately 2 ml suspension with awide-mouth pipette and drain off the liquid using a Pasteurpipette). Resuspend the cells in 2.5 ml 0.7 M BH3 medium(Table 2; BH3 ? 34 g/l sucrose) and then add 1.5 ml offilter sterilized Enzyme Solution containing 0.7 M mannitol,12.0 mM CaCl2, 6.0 mM MES buffer, 1.4 mM
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