4 research outputs found

    Influence of Preharvest Ethephon Spray on Fruit Quality and Chemical Attributes of 'Cigany' Sour Cherry Cultivar

    No full text
    ABSTRACT Influences of preharvest ethephon spray on fruit quality attributes and certain nutritional compounds of 'Cigany' sour cherry (Prunus cerasus) were investigated. Trees were sprayed with 250 ppm ethephon one week before anticipated commercial harvest. Fruits from ethephon-sprayed trees had significantly lower soluble solids concentration (SSC), anthocyanin content, antioxidant activity, and firmness than those from non-sprayed control. The ethephon spray did not affect total phenolic content, although its content tended to be higher in fruits from non-treated control. Titratable acidity (TA), pH and SSC/TA ratio were not affected by ethephon spray. There was a significantly positive correlation between anthocyanin content and SSC (r = 0.99)

    Evaluation of susceptibility of pear and plum cultivars to winter frost

    No full text
    The damage to pear and plum buds was investigated in Mashhad, after a period of unusually warm weather for a few days in March 2013 followed by a sudden drop in temperature to -12°C. Frost damages of vegetative and reproductive buds and spur-part below the buds of pear and plum cultivars were investigated based on visual observations. The following pear (Pyrus communis L.) cultivars were investigated: William’s, Bell de june, Ida, Spadona, Koshia, Domkaj, Dare Gazi, Mohamad Ali, Boheme, Shekari, Ghodumi and one Asian pear (Pyrus serotina Rehd.). Japanese plum (P. salicina L.) included ’Shiro’, ’Shams’, ’Computi’ and European plum (Prunus domestica L.) included ’Stanley’, ‘Early Santa Rosa’, ’Late Santa Rosa’, ’Shablon’ and ’Black Diamond’. Electrical conductivity (EC) and proline content were measured in reproductive buds. It was discovered that visual damages were different between cultivars, as the vegetative pear bud of ‘Ghodumi’ suffered the most damage and all parts of ‘Late Santa Rosa’ were the most susceptible in plum cultivars. On the other hand, ‘Computi’ had the most resistant reproductive bud and no damage was observed in the other parts. The EC and proline content of ‘Dare Gazi’ were the highest despite the fact that high proline content did not show high resistance, which was related to the phenological stage of ‘Dare Gazi’
    corecore