A inibição na síntese de giberelina reduz o crescimento vegetativo em macieiras e proporciona controle de "bitter pit" nos frutos

Silveira, João Paulo Generoso; Amarante, Cassandro Vidal Talamini do; Steffens, Cristiano André; Miqueloto, Aquidauana; Katsurayama, José Masanori

doi:10.1590/s0100-29452012000200004

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…The role of GAs could explain why the symptoms appear only in some parts of the treetops, and why, in the same flower cluster, some fruits appear with bitter pit and others without. The findings of Silveira et al (2012) support the above mentioned statements. The authors achieved a reduction in the appearance of bitter pit by applying Prohexadione-Calcium, an inhibitor of GA synthesis, and gibberellin GA 3 on vegetative growth of the trees.…”

Section: Pre-harvest Factors Affecting Appearance Of Bitter Pitsupporting

confidence: 83%

Bitter pit in apples: pre- and postharvest factors: A review

Jemrić

Fruk

et al. 2016

Span J Agric Res

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Bitter pit is a physiological disorder that significantly reduces the quality of apples. Although it has been detected since the beginning of the last century, still there is little known about the mechanism of its occurrence. According to numerous studies, bitter pit is formed as a result of calcium deficiency in the fruit. Some authors cite the high concentration of gibberellins, later in the production season, most probably caused by excessive activity of the roots, as the chief causative factor. Beside Ca, there are several factors that can also contribute to its development, like imbalance among some mineral elements (N, P, K and Mg), cultivar, rootstock, the ratio of vegetative and generative growth, post-harvest treatments and the storage methods. There are some prediction models available that can estimate the risk of bitter pit in apples, but even those are not always reliable. The aim of this review was to encompass the pre and postharvest factors which cause bitter pit and point out the directions for solving this problem.

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Section: Pre-harvest Factors Affecting Appearance Of Bitter Pitsupporting

confidence: 83%

Bitter pit in apples: pre- and postharvest factors: A review

Jemrić

Fruk

et al. 2016

Span J Agric Res

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“…Trees sprayed with Prohexadione Ca at post bloom, had the highest percentage of branches. Application of ProCa in apple at PB stage has Advances in Application of Unexploited Plant Bio-regulators for Fruit Production: A Review been reported to inhibit the biosynthesis of active gibberellins (Davies, 2004) and reduce the vegetative growth (Cline et al, 2008;Silveira et al, 2012;Hawerroth et al, 2012). Prohexadione Ca PB delayed the loss of functionality of primary cortical vascular bundles in the proximal part of the fruit until 81 DAFB in comparison to the control and GA4+7 PB.…”

Section: Prohexodione Calciummentioning

confidence: 99%

Advances in Application of Unexploited Plant Bio-regulators for Fruit Production: A Review

Bhattacharjee¹,

Nimbolkar²,

Chander³

et al. 2021

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The term ‘bio-regulator’ has been used to encompass the natural and synthetic compounds that regulate various plant growth and developmental processes. Plant bio-regulators (PBRs) previously called plant growth regulators. Use of PBRs with a unique fact finding support assistance from biotechnology made a new approach of manipulating plant biological activities for enhancing growth, yield, quality, nutritive value and an important tool to reduce biotic and abiotic stress in plants. PBRs like jasmonic acid (JA) and its derivatives act as an omnipresent signaling molecules which mediate plant responses to biotic and abiotic stress. Salicylic acid (SA) and methyl salicylate are endogenous signal molecules, also playing pivotal roles in regulating stress responses. A polyamine is low-molecular weight organic compound having two or more primary amino groups, act as ethylene repressor. Prohexodione calcium is a new generation anti-gibberellin. Along with listed names several other bio-regulators are in vogue to improve plant growth, development, stress resistance, pathogenic defense and productivity. In this review, it’s an attempt to portray existing advanced knowledge about under utilized bio-regulators role and utility in cultivation of fruit crops.

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“…Alternatively, the use of plant growth regulators (PGRs) to modify the uptake of Ca, or enhance its allocation to fruit, is established as strategy for decreasing bitter pit in apple. For example, PGRs such as Prohexadion-Calcium (a gibberellic acid inhibitor), 1-methylcyclopropene (1-MCP), or diphenylamine (DPA) have been used in apple [68,69]. The potential negative effect of the types of PGRs on fruit set make this avenue of investigation problematic.…”

Section: Future Research Directions For Green Fruit Drop In Blueberrymentioning

confidence: 99%

Foliar Calcium Corrects a Deficiency Causing Green Fruit Drop in ‘Draper’ Highbush Blueberry (Vaccinium corymbosum L.)

Gerbrandt

Mouritzen²,

Sweeney

2019

Agriculture

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‘Draper’ northern highbush blueberry (Vaccinium corymbosum L.) is a widely-planted mid-season cultivar with excellent fruit quality. Under the climatic conditions of Southwestern British Columbia, Canada, and Northwestern Washington, USA, it expresses a physiological disorder causing spontaneous green fruit drop (GFD) of up to half of the developing crop just prior to onset of the fruit coloring phenophase. Reduction of economic losses due to GFD required identification of the cause of this disorder and development of an agronomic solution that would reduce fruit drop. In 2014, two initial experiments were conducted to compare three foliar Ca products under a range of N fertilization rates. In 2015 and 2016, three locations were used in a first step to optimizing rates and timings of foliar Ca application. Initial experiments determined that higher N fertilization rates exacerbate GFD but that foliar Ca corrects the condition. Multi-site, multi-year trials identified key rates and timings for foliar Ca application to provide an agronomic solution for commercial growers. These trials identified an acute fruit Ca deficiency as the cause of GFD, and that foliar calcium applied frequently at high concentration from mid-bloom onward can be effective in reducing GFD, often to negligible levels. This condition has now been reported in several production regions around the world.

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A inibição na síntese de giberelina reduz o crescimento vegetativo em macieiras e proporciona controle de "bitter pit" nos frutos

Cited by 5 publications

References 14 publications

Bitter pit in apples: pre- and postharvest factors: A review

Bitter pit in apples: pre- and postharvest factors: A review

Advances in Application of Unexploited Plant Bio-regulators for Fruit Production: A Review

Foliar Calcium Corrects a Deficiency Causing Green Fruit Drop in ‘Draper’ Highbush Blueberry (Vaccinium corymbosum L.)

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