Methyl jasmonate vapour treatment suppresses specking caused by Botrytis cinerea on cut Freesia hybrida L. flowers

Novel Elicitors Induce Defense Responses in Cut Flowers

“…In the same study, MeJA at concentrations of 100-400 μM showed in-vitro antifungal activity on B. cinerea spore germination and germ-tube elongation. Similarly, a postharvest pulse, spray, or vapour treatment with MeJA 200 μΜ, 600 μΜ or 1 μL L -1 , respectively, significantly reduced petal specking by B. cinerea on cut inflorescences of Freesia hybrida 'Cote d'Azur' (Darras et al, 2005;. Moreover, 1-100 μL L -1 MeJA postharvest vapour treatment reduced B. cinerea development on cut Geraldton waxflower 'Purple Pride' and 'Mullering Brook' sprigs (Eyre et al, 2006).…”

“…However, only MeJA conferred constant and significant disease reductions. MeJA vapour at 1 μL L -1 significantly reduced lesion numbers and diameters on freesia petals by up to 56% and 50%, respectively (Darras et al, 2005).…”

“…In Arabidopsis, this effect was mediated via the JA-dependent defence responses (Thomma et al, 2000). MeJA did not exert any direct antifungal activity in-vitro except at the concentration of 600 μM and therefore it is possible that MeJA reduced B. cinerea disease on freesia flowers by inducing responses correlated with the JA-dapendent pathway (Darras et al, 2005). PPO levels in freesia flowers after MeJA gaseous treatment increased by 47 and 57% compared to the untreated controls (Darras et al, 2011).…”

“…inflorescences (Darras et al, 2005;. An apparent induced defence response was recorded by both ASM and MeJA treatment.…”

Effects of Different Conditions on The Vase Life of Orchis palustris

“…Several studies have shown the effects of different chemicals on flower length and shelf life. (Yılmaz, 1991;Ketsa et al, 2001;Sahamantak and Pathania, 2003;Sing et al, 2004;Al-Humaid;2004, Darras, 2005Macnish et al, 2008;Machaka-Houri et al, 2012;Gomiz el al., 2013).…”