Effect of growth retardant on some morphological and physiological traits of chrysanthemum

• Autorzy: Pobudkiewicz A.

Warianty tytułu

PL

Wpływ fluroprimidolu na niektóre morfologiczne i fizjologiczne cechy chryzantem

• Języki publikacji: EN

Abstrakty

EN

The aim of this work was to evaluate the effectiveness of a single flurprimidol foliar spray on growth, flowering, transpiration rate and stomatal conductance of medium height chrysanthemums “Kodiak” and “Jewel Time”, grown in pots. Flurprimidol applied once, as a foliar spray, at concentrations of 7.5, 15 or 22.5 mg dm⁻³ was effective in reducing stem extension without adverse side-effects. The degree of growth inhibition varied by cultivar and flurprimidol concentration. The desirable heights of “Jewel Time” and “Kodiak” chrysanthemums were obtained with flurprimidol at 7.5 or 22.5 mg dm⁻³, respectively. Growth retardant slightly delayed anthesis, reduced the canopy width, the leaf area, plant dry weight and the number of inflorescences but had no effect on inflorescence diameter. There was no significant effect of flurprimidol on leaf stomatal conductance to water vapor and transpiration rate per unit leaf area of both chrysanthemum cultivars. Chemical name used: α-(1-methylethyl)-α-[4-(trifluromethoxy)phenyl]-5-pyrimidinemethanol (flurprimidol).

PL

Celem pracy była ocena skuteczności fluroprimidolu, stosowanego dolistnie, jednokrotnie, na wzrost, kwitnienie, transpirację i przewodność szparkową średnio silnie rosnących chryzantem “Kodiak” i “Jewel Time;, uprawianych w doniczkach. Fluroprimidol stosowany jednokrotnie, dolistnie, w stężeniach 7.5, 15 lub 22.5 mg dm⁻³ skutecznie hamował wydłużanie się pędów, nie powodując niepożądanych skutków ubocznych. Stopień zahamowania wzrostu zależał od odmiany i stężenia fluroprimidolu. Pożądane wysokości chryzantem “Jewel Time” i “Kodiak” uzyskano stosując fluroprimidol, odpowiednio w stężeniach 7.5 lub 22.5 mg dm⁻³. Retardant wzrostu nieznacznie opóźnił kwitnienie, zmniejszył średnicę roślin, powierzchnię liścia, suchą masę roślin i liczbę kwiatostanów ale nie miał wpływu na średnicę kwiatostanu. Nie stwierdzono istotnego wpływu fluroprimidolu na przewodność szparkową liści i transpirację na jednostkę powierzchni liścia obu odmian chryzantem. Nazwa chemiczna: α-(1-metyloetylo)-α-[4-(trifluorometoksyfenylo]-5-pirymidynometanol (fluroprimidol).

• Wydawca: -
• Czasopismo: Polish Journal of Natural Sciences
• Rocznik: 2014
• Tom: 29
• Numer: 4
• Opis fizyczny: p.291-306,fig.,ref.

Twórcy

autor

Pobudkiewicz A.

• Research Institute of Horticulture, Konstytucji 3 Maja 1/3, 96-100 Skierniewice, Poland

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