Postharvest Hormone Changes in Vegetables and Fruit

Ludford, Pamela M.

doi:10.1007/978-94-009-3585-3_30

Cited by 8 publications

(5 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…At harvest, vegetables are removed from the parent plant and so they lose the normal supply of water, nutrients, and organic molecules including hormones, which may be supplied by translocation from other parts of the plant during growth. Nevertheless, endogenous hormones go on functioning and controlling physiological processes of vegetables even during storage [52]. This suggested an opportunity to control and slow postharvest changes in fruits, vegetables, and flowers by exogenous application of phytohormones.…”

Section: Discussionmentioning

confidence: 99%

“…The growth-promoting effect of GA 3 resulted in a significantly higher yield of both raw and minimally processed leafy vegetables. GA 3 -treated plants showed an enhanced activity of enzymes that have a role in photosynthetic processes [58,59]; thus, GA 3 may indirectly increase the photosynthetic rate [52,54,58,60], leading to greater dry mass accumulation and higher yield.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Preharvest Gibberellic Acid Treatments on Postharvest Quality of Minimally Processed Leaf Lettuce and Rocket

et al. 2019

View full text Add to dashboard Cite

Plant growth regulators are used in high-value vegetable crops during cultivation and after harvest to increase yield, enhance crop management, and improve or retain the produce quality. The aim of this work was to evaluate the quality characteristics during cold storage of minimally processed leaf lettuce and rocket, obtained from plants grown in a hydroponic floating system with mineral nutrient solutions (MNS) containing different levels of gibberellic acid (GA3). Plants were grown in greenhouse conditions on nutrient solutions containing 0, 10−8, and 10−6 M GA3. At harvest, lettuce and rocket were immediately processed as fresh-cut vegetables and stored for 21 d at 4 °C. After processing, weight loss, total soluble solids, titratable acidity, ascorbic acid and nitrate content, leaf color characteristics, and overall quality were evaluated. Adding 10−6 M GA3 to the MNS of a floating system significantly increased the yield of leaf lettuce and rocket plants and of minimally-processed leaves. In addition, preharvest GA3 treatments had positive effects on delaying senescence and enhancing shelf-life of minimally processed lettuce and rocket. The slowed senescence of GA3-treated samples maintained an overall quality over the threshold of marketability in both lettuce and rocket for up to 21 d of cold storage.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Influence of Preharvest Gibberellic Acid Treatments on Postharvest Quality of Minimally Processed Leaf Lettuce and Rocket

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Moreover, Tian et al (1997) reported that diazocyclopentadiene (DACP) and IAA interacted in regulating the ethylene production of strawberry, which was caused by an increase in ACC content, not ACC oxidase activity. These apparent contradictory effects induced by the application of plant growth regulators on fruit setting and senescence-related processes suggest the involvement of factors such as species, tissue type, developmental stage, and experimental conditions (Nooden 1988;Gianfagna 1995;Ludford 1995).…”

Section: Resultsmentioning

confidence: 97%

Effect of p-CPA-parthenocarpic setting on the delayed ripening of netted-melon fruits

et al. 2005

View full text Add to dashboard Cite

Application of plant growth regulators may induce parthenocarpic fruit setting, avoiding problems due to poor pollination. Their influence on the ripening of netted-melon fruit (Cucumis melo L.), however, is not yet well understood. The ripening behavior of parthenocarpic melon fruit (treated with 50 ppm 4-chlorophenoxy acetic acid (p-CPA) and 350 ppm gibberellic acid (GA 3 ) at anthesis) was compared with that of hand-pollinated fruit. The ethylene production in parthenocarpic fruit peaked up about 10 days behind that of pollinated fruit but was greater. The delay was accompanied by a retardation in fruit softening, thereby leading to an extended edible period. The expression of ethylene synthesis-related enzymes: ACC synthase (ACS) and ACC oxidase (ACO) genes at the commencement of the ripening process was also evaluated. Northern blot and RT-PCR analyses revealed a higher level in the mRNA transcript abundance of ACS genes (auxin-and wound-inducible) but lower abundance of the ripening-related gene ACO in parthenocarpic fruit compared to that of pollinated fruit. Western blot analysis further confirmed the lower level of ACO polypeptide in parthenocarpic fruit. The retarded ripening of parthenocarpic melon fruit resulted from the delayed production of ethylene, which is likely a consequence of the low abundance of ACO. A possible inhibitory effect of auxin on ACO transcript as a result of p-CPA application is proposed.

show abstract

“…Ethylene peaks occur during the meristemoid differentiation period and result in delayed shoot induction (Dias et al 2009). The higher ethylene production rate of P. edulis may limit its morphogenetic potential (Ludford 1995), causing the leaves of tissue culture seedlings to become smaller and even cause plantlets to die (Guo et al 2004). To avoid the negative effects of ethylene, a porous membrane cap or the addition of ethylene antagonists in culture medium can alleviate these effects (Luo et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Techniques for Improving the Tissue Culture Efficiency of Purple Passion Fruit (Passiflora edulis)

Huang¹

2021

IJAB

View full text Add to dashboard Cite

Purple passion fruit (Passiflora edulis Sims) has gained attention in Southern China, and its planting area has increased during the last several years. Through tissue culturing, virus-free plants are produced as maternal parents for seedling production. However, there are some difficulties that affect passion fruit tissue culture efficiency, including high contamination rates in explant disinfection, low shoot proliferation, yellow or albino leaves, slow growth, and time-consuming processes. In this work, the aforementioned problems were investigated, and disinfection was optimized. Results revealed that the repeat disinfection method (0.1% HgCl2 for 15 min + 0.1% HgCl2 for 12 min) with a 2-d interval was the most suitable disinfection treatment for young stem segments of purple passion fruit. The addition of silver thiosulfate (STS) improved proliferation efficiency. Moreover, additional 1X iron salt was added to the bud induction and rooting medium. The regenerated shoots had a better seedling state with healthier green leaves, roots were more easily induced and better developed and the chlorophyll contents were higher. Thus, more efficient tissue culturing of purple passion fruit was achieved. © 2021 Friends Science Publishers

show abstract

Postharvest Hormone Changes in Vegetables and Fruit

Cited by 8 publications

References 40 publications

Influence of Preharvest Gibberellic Acid Treatments on Postharvest Quality of Minimally Processed Leaf Lettuce and Rocket

Influence of Preharvest Gibberellic Acid Treatments on Postharvest Quality of Minimally Processed Leaf Lettuce and Rocket

Effect of p-CPA-parthenocarpic setting on the delayed ripening of netted-melon fruits

Techniques for Improving the Tissue Culture Efficiency of Purple Passion Fruit (Passiflora edulis)

Contact Info

Product

Resources

About