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Acta Horticulturae
Lurie, S., Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Ethylene is known as the 'ripening' hormone. Manipulations of fruits and vegetables by either exogenous ethylene or inhibitors of ethylene production, such as aminoethoxyvinylglycine, or perception, such as 1-methylcyclopropene, are widely used to influence the postharvest behavior of commodities. However, other plant growth regulators are also used in horticultural production and have ramifications for postharvest quality. Many of the commercially available plant growth regulators are used in stone fruit production. Auxins are used to enhance the size of stone fruits. Gibberellins are used for increasing fruit size and firmness of cherries and peaches. In addition, when peaches are treated at the end of pit hardening, gibberellin can delay storage disorders such as internal browning and woolliness development. Inhibitors of gibberellin synthesis which inhibit shoot elongation have also been used to increase fruit size by decreasing the competition between fruit and vegetative growth. These plant growth regulators have also been found to decrease fungal infections, either by delaying ripening or senescence, or by altering the structure of the fruit. Other well-known plant growth regulators have been used to affect biotic and abiotic stresses of harvested fruits and vegetables. Salicylic acid and jasmonic acid induce defense reactions in fruits and vegetables that help prevent fungal infection and induce resistance to low temperature injury. Growers and researchers should be aware that plant growth regulators applied in the field may have beneficial carry-over effects on postharvest quality.
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Plant growth regulators for improving postharvest stone fruit quality
884
Lurie, S., Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Plant growth regulators for improving postharvest stone fruit quality
Ethylene is known as the 'ripening' hormone. Manipulations of fruits and vegetables by either exogenous ethylene or inhibitors of ethylene production, such as aminoethoxyvinylglycine, or perception, such as 1-methylcyclopropene, are widely used to influence the postharvest behavior of commodities. However, other plant growth regulators are also used in horticultural production and have ramifications for postharvest quality. Many of the commercially available plant growth regulators are used in stone fruit production. Auxins are used to enhance the size of stone fruits. Gibberellins are used for increasing fruit size and firmness of cherries and peaches. In addition, when peaches are treated at the end of pit hardening, gibberellin can delay storage disorders such as internal browning and woolliness development. Inhibitors of gibberellin synthesis which inhibit shoot elongation have also been used to increase fruit size by decreasing the competition between fruit and vegetative growth. These plant growth regulators have also been found to decrease fungal infections, either by delaying ripening or senescence, or by altering the structure of the fruit. Other well-known plant growth regulators have been used to affect biotic and abiotic stresses of harvested fruits and vegetables. Salicylic acid and jasmonic acid induce defense reactions in fruits and vegetables that help prevent fungal infection and induce resistance to low temperature injury. Growers and researchers should be aware that plant growth regulators applied in the field may have beneficial carry-over effects on postharvest quality.
Scientific Publication
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