Document Detail

Temperature cycling periods affect growth and tuberization in potatoes under continuous irradiation.
MedLine Citation:
PMID:  11537729     Owner:  NASA     Status:  MEDLINE    
Plants of the potato (Solanum tuberosum L.) cultivars Denali, Norland, Haig and Kennebec were grown for 42 days under three temperature cycling periods (thermoperiods) with continuous irradiation in two repeated experiments to help determine if temperature cycling might be varied to optimize tuber development of potatoes in controlled environments. Thermoperiods of 6/6 hours, 12/12 hours and 24/24 hours were established with the same temperature change of 22/14C and same controlled vapor pressure deficit of 0.60 kPa. The thermoperiod of 24/24 hours significantly promoted tuber initiation but slowed tuber enlargement in all four cultivars, compared to the thermoperiods of 6/6 hours and 12/12 hours. Denali' produced the highest tuber and total dry weights under the 6/6 hours thermoperiod. Kennebec' produced the highest tuber dry weight under the 12/12 hours thermoperiod. Thermoperiods had no significant effect on shoot and root dry weights of any cultivars. The major effect of thermoperiods was on initiation and enlargement of tubers.
W Cao; T W Tibbitts
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  HortScience : a publication of the American Society for Horticultural Science     Volume:  27     ISSN:  0018-5345     ISO Abbreviation:  HortScience     Publication Date:  1992 Apr 
Date Detail:
Created Date:  1995-03-30     Completed Date:  1995-03-30     Revised Date:  2007-08-01    
Medline Journal Info:
Nlm Unique ID:  9882989     Medline TA:  HortScience     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  344-5     Citation Subset:  S    
Department of Horticulture, University of Wisconsin, Madison 53706.
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MeSH Terms
Environment, Controlled*
Light / adverse effects*
Solanum tuberosum / growth & development*,  radiation effects
T W Tibbitts / U Wisconsin, Madison, Dept Horticulture

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