ISSN:
1573-5044
Keywords:
allometric analysis
;
growth analysis
;
inca lily
;
peruvian lily
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Rhizome tip explants of Alstroemeria ‘Parigo Pink’ were established on modified Murashige & Skoog medium with P added as KH2PO4 at 0, 0.01, 0.05, 0.25, 1.25 or 2.5 mM. Cultures were transferred to fresh media every 4 weeks. Five explants were harvested from each P treatment after 3, 5, 7, 9 and 11 weeks in culture. Explants were separated into rhizome and shoot, weighed, dried and wet-ashed. Phosphorus content of the ash was determined colorimetrically. Explants supplied 1.25 or 2.5 mM P produced significantly more shoots and growing points, and greater fresh weight of rhizomes and shoots, than those provided with lower P concentrations. Phosphorus accumulation rates in shoots in the two highest P treatments were significantly greater than in the lower P treatments. Shoot tissue P concentrations greater than 7 mmol kg-1 fwt evidently are required for maximum in vitro growth of Alstroemeria ‘Parigro Pink’. Explants provided the two highest P treatments partitioned a greater proportion of fresh weight and total P to shoots vs rhizomes than lower P treatments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00029843
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