The Climacteric Rise in Respiration Rate of the Fuerte Avocado Fruit
نویسنده
چکیده
The relationship between carbon dioxide evolution and fruit ripening has been investigated widely for some of the deciduous fruits. With the apple and pear, in particular, it has been shown (4, 5) that changes in certain manifestations of maturity are accompanied by a greatly accelerated rate of respiration. Similar observations were made for the banana (2). This rapid increase in carbon dioxide production is referred to by workers in this field as the "climacteric" rise in respiration. Not all fruits appear to exhibit this respiratory trend, however. In the lemon and orange, which have relatively low respiring power, no climacteric has thus far been observed (1).
منابع مشابه
Postharvest Variation in Cellulase, Polygalacturonase, and Pectinmethylesterase in Avocado (Persea americana Mill, cv. Fuerte) Fruits in Relation to Respiration and Ethylene Production.
Cellulase, polygalacturonase (PG), pectinmethylesterase (PME), respiration, and ethylene production were determined in single "Fuerte" avocado fruits from the day of harvest through the start of fruit breakdown. PME declined from its maximum value at the time of picking to a low level early in the climacteric. PG activity was not detectable in the preclimacteric stage, increased during the clim...
متن کاملSuccinoxidase Activity of Avocado Fruit Mitochondria in Relation to Temperature and Chilling Injury throughout the Climacteric Cycle.
Mitochondria were isolated from ;Fuerte' avocado fruit (Persea americana Mill.) at four different stages of the respiratory climacteric. Preclimacteric fruit had the highest rate of succinate oxidation and the postclimacteric mitochondria the lowest. Subsequently, successive additions of ADP increased the respiratory control ratio.Arrhenius plots of succinate oxidation of intact mitochondria fr...
متن کاملThe Climacteric Rise in Fruit Respiration as Controlled by Phosphorylative Coupling.
The ripening of fruit is accompanied by a group of physiological and chemical changes whichl are characteristic and moderately uniform as between different species of plants. Typical coimiponents of the ripening process are pectic transformations which lead to fruit softening, changes in fruit color, often with the disappearance of pigment such as chlorophyll and the appearance of new secondary...
متن کاملRelation of the Production of an Active Emanation to Respiration in the Avocado Fruit.
The production of physiologically active emanations by plant tissue in general, and especially by ripe fruit, has been demonstrated by epinastic responses of tomato and potato leaves, by inhibition of seed germination and potato sprouting, by the triple response of etiolated legume seedlings, and by effects on fruit respiration and softening. In all cases which subsequently have been investigat...
متن کاملThe Effect of Calcium on the Ripening of Avocado (Persea americana Mill.) Fruits
Treatment with calcium (0.1 M CaSO4, 0.1 M CaCl2) depressed respiration of avocado fruits during preclimacteric and climacteric phases. Na2SO4 was ineffective. Calcium not only inhibited respiration but delayed the onset of the climacteric and depressed the peak of ethylene production at the climacteric rise. Determinations of endogenous Ca confirmed that higher levels were positively correlate...
متن کامل