(S)-(-)-limonene fumigation protects waxflowers (Chamelaucium spp.) from detrimental effects of ethylene on abscission of flowers/buds
MetadataShow full item record
Waxflowers are economically important native cut flowers in Australian floriculture industry. Postharvest flowers/buds abscission on stems of waxflowers causes serious economic losses to the Australian waxflower industry. The effects of (S)-(-)-limonene in reducing the damaging effects of ethylene on abscission of flowers/buds in six varieties of Geraldton waxflowers ‘WX73’, ‘WXFU’ ,‘WX17’, ‘WX58’, ‘WX56’ and ‘Purple Pride’ were investigated in 2014 and 2015. All the experiments were conducted having four treatments. The flowers stems were fumigated with ethylene (10 µLL-1) for 24 h and (S)-(-)-limonene (1 µM) alone for 18 h and (S)-(-)-limonene fumigation followed by exposure to ethylene. Untreated sprigs served as control. All the six experiments were laid out by following two-factor factorial completely randomised design including the (4 treatments and 4 times) with three replications and three stems were treated as an experimental unit. Cumulative abscission of flowers/buds was calculated for four consecutive days following 24 h of ethylene exposure. Fumigation with (S)-(-)-limonene (1 µM) for 18 h followed by exposure to 10 µLL-1 ethylene significantly reduced flowers/buds abscission as compared to ethylene treatment alone in all varieties except ‘WX17’. Mean flowers/buds abscission was significantly reduced when flower stems were fumigated with (S)-(-)-limonene followed by exposure to 10 µLL-1 ethylene (26.7%, 30.9%, 62.4%, 13.6 and 6.4%) as compared to those exposed to ethylene treatment alone (89.9%, 82.0%, 77.4%, 85.9% and 68.8%) in ‘WX73’, ‘WXFU’, ‘Purple Pride’, ‘WX56’ and ‘WX58’ respectively. ‘WX17’ waxflower fumigated with (S)-(-)-limonene followed by exposure to 10 µLL-1 ethylene did not show a significant reduction in flowers/buds abscission as compared to ethylene alone probably this genotype is more sensitive to ethylene because of their inherited trait. The results suggest that (S)-(-)-limonene act as an antagonist to ethylene action and consequently reduced flowers/buds abscission in waxflowers.
Showing items related by title, author, creator and subject.
Sakimin, Siti Zaharah (2011)Mango fruit ripen quickly. It is highly perishable. Short shelf life of mango fruit limits its transportation to distant domestic and international markets. The objective of my research was to elucidate the role of changes ...
Combined Applications of Aminoethoxyvinylglycine with Salicylic Acid or Nitric Oxide Reduce Oxidative Stress in Peach During Ripening and Cold StorageTareen, M.; Singh, Zora; Khan, A.; Abbasi, N.; Naveed, M. (2017)The effects of pre-harvest application of aminoethoxyvinylglycine (AVG) alone or in combination with nitric oxide (NO) or salicylic acid (SA) on the oxidative stress and fruit quality during ripening and cold storage were ...
Singh, Zora; Zaharah, S. (2013)Hard mature green Kensington Pride mango fruit were fumigated with 0, 5, 10, 20 and 40 µL.L−1 NO gas for 2 h and allowed to ripen at ambient temperature (21±1°C) to evaluate its effects on fruit ripening. NO-fumigation ...