Applying Calcium Chloride Postharvest to Improve Highbush Blueberry Firmness

Hanson, Eric J.; Beggs, Jane L.; Beaudry, Randolph M.

doi:10.21273/hortsci.28.10.1033

Cited by 51 publications

(24 citation statements)

References 4 publications

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“…Pectin solubilization was also observed during blueberry post-harvest storage [17]. Interestingly, calcium application has been reported to enhance firmness and post-harvest quality of blueberries [50,51].…”

Section: Molecular and Architectural Changes In Plant Cell During Frumentioning

confidence: 89%

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry—A Review

Cappai¹,

Benevenuto²,

Ferrão³

et al. 2018

Preprint

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Blueberry (Vaccinium spp.) has been recognized worldwide as a valuable source of health- 18promoting compounds, becoming a crop with some of the fastest rising consumer demand trends. 19Fruit firmness is a key target for blueberry breeding as it directly affects fruit quality, consumer 20 preference, transportability, shelf life, and the ability of cultivars to be machine harvested. Fruit 21 softening naturally occurs during berry development, maturation, and postharvest ripening. 22However, some genotypes are better at retaining firmness than others, and some are crispy, which 23 is a putatively extra-firmness phenotype that provides a distinct eating experience. In this review, 24we summarized important studies addressing the firmness trait in blueberry, focusing on 25 physiological and molecular changes affecting this trait at the onset of ripening and also the genetic 26 basis of firmness variation across individuals. New insights into these topics were also achieved by 27 using previously available data and historical records from the blueberry breeding program at the

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Section: Molecular and Architectural Changes In Plant Cell During Frumentioning

confidence: 89%

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry—A Review

Cappai¹,

Benevenuto²,

Ferrão³

et al. 2018

Preprint

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“…In addition to hormone-related genes, a diverse set of calcium-related genes were also found in the QTL regions, including some with potential binding, transport, and calcium-activated signal transduction functions. Calcium also has well-documented roles in signaling, water relations, and cell wall modification during fruit ripening in various fruit crops; therefore, these genes may also be underlying the variation of the traits (Conway and Sams, 1987; García et al, 1996; Pilar Hernandez et al, 2006; Ciccarese et al, 2013; Beaudry et al, 2016; Munir et al, 2016; Gao et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…At a molecular level, fruit firmness is intertwined with fruit ripening, and it is the result of a complicated network of interactions between two main hormones, ethylene and abscisic acid (ABA), and the cell wall disassembly process (Brummell, 2006; Vicente et al, 2007; Chiabrando and Giacalone, 2011; Cappai et al, 2018). The exact cascade of events that leads to fruit softening has not been completely elucidated in blueberry, even though current evidence indicates that pectin solubilization in the cell wall could be one of the main outcomes (Lara et al, 2004; Vicente et al, 2007; Angeletti et al, 2010; Beaudry et al, 2016). Fruit Detachment Force (FDF), or abscission force, is the force required for a single berry to detach from a stem at the point of the pedicel junction.…”

Section: Introductionmentioning

confidence: 99%

High-Resolution Linkage Map and QTL Analyses for Machine Harvest Traits in Autotetraploid Blueberry

Cappai

Amadeu

Benevenuto

et al. 2020

Preprint

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2Blueberry (Vacciunium corymbosum and hybrids) is an autotetraploid crop whose commercial 3 relevance has been growing steadily during the last twenty years. However, the ever-increasing 4 cost of labor for hand-picking blueberry is one main constraint in competitive marketing of the 5 fruit. Machine harvestability is, therefore, a key trait for the blueberry industry. Understanding 6 the genetic architecture of traits through quantitative trait locus (QTL) mapping is the first step 7 towards implementation of molecular breeding for faster genetic gains. Despite recent advances 8 in software development for autotetraploid genetic mapping, a high-resolution map is still not 9 available for blueberry. In this study, we crafted a map for autotetraploid low-chill highbush 10 blueberry containing 11,292 SNP markers and a total size of 1,953.97 cM (average density of 11 5.78 markers/cM). This map was subsequently used to perform QTL analyses for traits relevant 12 to machine harvesting: firmness, firmness retention, and fruit detachment force. Significant 13 QTL peaks were identified for all the traits. The QTL intervals were further explored for putative 14 candidate genes. Genes related to cell wall remodeling were highlighted in the firmness and 15 firmness retention intervals. For fruit detachment force, transcription factors involved in fruit 16 abscission were detected. Altogether, our findings provide the basis for future fine-mapping and 17 molecular breeding efforts for machine harvesting in blueberry. 18 Keywords: Vaccinium, southern highbush blueberry, firmness, detachment force, polyploid 19 20chromosomal alterations are not only tolerated by plant genomes, but can also drive evolution, for example, 21 promoting speciation (Adams and Wendel, 2005). Polyploid organisms are classified as either allopolyploids 22 or autopolyploids, depending on the degree of divergence between their subgenomes (Brubaker et al., 1999). 23 Autopolyploids, such as blueberry (Vaccinium corymbosum L.), potato (Solanum tuberosum L.), and alfalfa 24 (Medicago sativa L.), contain multiple copies of the same chromosome set, which can all pair and exchange 25 1 Cappai et al. QTL Map for Blueberry Harvest genetic material during gamete formation. In contrast, allopolyploids, such as wheat (Triticum aestivum 26 L.), coffee (Coffea arabica L.), and strawberry (Fragaria ananassa Duch.) contain two or more divergent 27 genomes, which usually show bivalent pairing and have disomic inheritance, like diploid organisms. 28 While in diploid systems the study of allelic inheritance is relatively simple, polysomic inheritance in 29 autopolyploids increases the number of possible genetic configurations and impacts downstream genetic 30 analyses, including linkage map construction and quantitative trait loci (QTL) mapping (Bever and Felber, 31 1992). 32 QTL mapping is the association study between phenotypic and genetic variants usually performed by 33 tracking recombination events of the possible QTL along chromosomes (Broman and Sen, 2009). In 34 b...

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“…In blueberry, fruit Ca levels impact fruit quality [51], but attempts to use foliar Ca to increase fruit Ca concentration, usually for the purpose of improving fruit quality, have been met with varying degrees of success. In one study in Michigan, a 0.08% Ca solution was applied to 'Bluecrop', 'Blueray', and 'Ivanhoe', but fruit Ca and quality parameters such as firmness were not affected [28].…”

Section: Mitigation Of Green Fruit Drop In 'Draper' Blueberry Using Cmentioning

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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Applying Calcium Chloride Postharvest to Improve Highbush Blueberry Firmness

Cited by 51 publications

References 4 publications

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry—A Review

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry—A Review

High-Resolution Linkage Map and QTL Analyses for Machine Harvest Traits in Autotetraploid Blueberry

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

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Applying Calcium Chloride Postharvest to Improve Highbush Blueberry Firmness

Cited by 51 publications

References 4 publications

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry&mdash;A Review

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry&mdash;A Review

High-Resolution Linkage Map and QTL Analyses for Machine Harvest Traits in Autotetraploid Blueberry

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

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Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry—A Review

Molecular and Genetic Bases of Fruit Firmness Variation in Blueberry—A Review