Effect of epibrassinolide and auxin on the stem growth and ethylene production in tulips

• Autorzy: Wegrzynowicz-Lesiak E. , Saniewski M.

Warianty tytułu

PL

Wpływ epibrassinolidu i auksyny na wzrost łodygi i produkcję etylenu w tulipanach

• Języki publikacji: EN

Abstrakty

EN

The interaction of epibrassinolide (epi-BL) with auxin in tulip stem growth and ethylene production were studied. Excision of all leaves and flower bud in isolated shoots (about 5 cm long) of tulip almost totally inhibited stem growth. IAA at both concentrations (0.1% and 1.0%) greatly induced the growth of tulip shoot, but higher concentration at IAA in smaller degree stimulated the growth. Epibrassinolide at concentration 0.05 µM applied simultaneously with auxin did not affect tulip stem growth induced by IAA treatment alone. However, higher concentration of epi-BL (1.0 µM) stimulated tulip stem growth induced by IAA at both concentrations. IAA at both concentrations stimulated ethylene production in the stem internodes of tulips. Higher concentration of auxin stimulated ethylene production more than low concentration. Epibrassinolide applied simultaneously with auxin evidently enhanced ethylene production measured 3 and 5 days after treatment in comparison to IAA treatment alone.

PL

Określono zależność między epibrassinolidem (epi-BL) i auksyną w regulacji wzrostu pędu tulipana oraz ich wpływ na produkcję etylenu. Usunięcie wszystkich liści i pąka kwiatowego, kiedy długość wyizolowanego pędu wynosiła około 5 cm, powodowało prawie całkowite zahamowanie wzrostu łodygi tulipana. Auksyna, w stężeniu 0,1% i 1,0%, indukowała wzrost łodygi tulipana, w mniejszym stopniu wyższe stężenie IAA. Przyrost długości łodyg tulipanów, traktowanych w miejsce pąka IAA, umieszczonych w roztworach wodnych epibrassinolidu o niższym stężeniu (0,05 µM) był podobny jak po traktowaniu samym IAA. Traktowanie łodyg tulipana wyższym stężeniem epibrassinolidu (1,0 µM) i auksyną stymulowało wydłużanie się łodyg, w porównaniu do traktowania samą auksyną. IAA naniesione w miejsce usuniętego pąka stymulowało produkcję etylenu, w wyższym stopniu wyższe stężenie IAA, w porównaniu do kontroli. Epibrassinolid wzmagał produkcję etylenu w eksplantatach pędów tulipana traktowanych auksyną.

Słowa kluczowe

EN

auxin; epibrassinolide; ethylene; tulip; interaction; brassinosteroid; stem growth; ethylene production; gibberellin; Apeldoorn cultivar; tulip bulb

• Wydawca: -
• Czasopismo: Zeszyty Problemowe Postępów Nauk Rolniczych
• Rocznik: 2008
• Tom: 524
• Opis fizyczny: p.431-437,fig.,ref.

Twórcy

autor

Wegrzynowicz-Lesiak E.

• Research Institute of Pomology and Floriculture, Pomologiczna 18, 96-100 Skierniewice, Poland

autor

Saniewski M.

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