Stimulating productivity of hydroponic lettuce in controlled environments with triacontanol.
Triacontanol (1-triacontanol) applied as a foliar spray at 10(-7) M to 4-day-old, hydroponically grown leaf lettuce (Lactuca sativa L.) seedlings in a controlled environment increased leaf fresh and dry weight 13% to 20% and root fresh and dry weight 13% to 24% 6 days after application, relative to plants sprayed with water.  When applied at 8 as well as 4 days after seeding, triacontanol increased plant fresh and dry weight, leaf area, and mean relative growth rate 12% to 37%.  There was no benefit of repeating application of triacontanol in terms of leaf dry weight gain.
Knight
S L
SL
Department of Horticulture, Purdue University, West Lafayette, IN 47907, USA.
Mitchell
C A
CA
D018533:Biomass; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D018504:Ecological Systems, Closed; D004780:Environment, Controlled; D005233:Fatty Alcohols / Q000494:pharmacology*; D018527:Hydroponics / Q000379:methods / Q000592:standards; D018545:Lactuca / Q000187:drug effects / Q000254:growth & development*; D008021:Life Support Systems / Q000295:instrumentation / Q000592:standards*; D013997:Time Factors
D004365:Drugs, Chinese Herbal; D005233:Fatty Alcohols; C047578:1-triacontanol