Abstract:
:Logarithmic growth rates (either fresh or dry weight basis) of tobacco callus tissues grown on 10(-4) to 10(-1) mum cytokinin are increased if gibberellic acid (10(-3)-2 mum) is incorporated into the medium. At higher (1-10 mum) cytokinin concentrations gibberellic acid has little effect on growth rate but extends the duration of logarithmic growth. The gibberellic acid effect is noticeable only after one weight doubling, is dependent on concentration, and occurs when either glucose or sucrose is used as carbon source. The gibberellic acid response includes a decrease in percentage of dry weight relative to control tissues. The maximum dry weight yield, although achieved sooner than controls, does not differ appreciably from yields of tissue not treated with gibberellic acid.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Helgeson JP,Upper CDdoi
10.1104/pp.46.1.113subject
Has Abstractpub_date
1970-07-01 00:00:00pages
113-7issue
1eissn
0032-0889issn
1532-2548journal_volume
46pub_type
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