scholarly journals Correlation between sensory and instrumental measurements of standard and crisp‐texture southern highbush blueberries ( Vaccinium corymbosum L. interspecific hybrids)

2014 ◽  
Vol 94 (13) ◽  
pp. 2785-2793 ◽  
Author(s):  
Kendra M Blaker ◽  
Anne Plotto ◽  
Elizabeth A Baldwin ◽  
James W Olmstead
Keyword(s):  
Interspecific Hybrids ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberries ◽  
Southern Highbush

scholarly journals Reaction of Different Vaccinium Species to the Blueberry Leaf Rust Pathogen Thekopsora minima

HortScience ◽  
2018 ◽  
Vol 53 (10) ◽  
pp. 1447-1452
Author(s):  
Ebrahiem M. Babiker ◽  
Stephen J. Stringer ◽  
Barbara J. Smith ◽  
Hamidou F. Sakhanokho
Keyword(s):  
Electron Microscopy ◽  
Leaf Rust ◽  
Interspecific Hybrids ◽  
Vaccinium Corymbosum ◽  
Sources Of Resistance ◽  
Rust Pathogen ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
High Level ◽  
Scanning Electron

Blueberry leaf rust caused by Thekopsora minima is a serious threat to blueberry production. To investigate the host range and characterize new sources of resistance, 15 southern highbush accessions (Vaccinium corymbosum), two interspecific hybrids (V. elliottii × V. pallidum and V. corymbosum × V. pallidum), and accessions from five diploid Vaccinium species were inoculated with an isolate of T. minima. Of 15, only two southern highbush accessions displayed resistance, whereas both accessions of V. arboreum displayed immunity against T. minima. Accessions of V. darrowii exhibited necrosis but with limited sporulation, indicating a high level of resistance. Sporulating lesions and brown spots were observed in accessions of V. elliottii and V. tenellum. Brown lesions, large pustules, and abundant sporulation were observed on V. pallidum accessions and their interspecific hybrids. As the lesions expanded, defoliation was observed in V. pallidum accessions. When tested against rabbiteye (V. virgatum) and southern highbush blueberries, urediniospores of T. minima from overwintering leaves of V. pallidum were found to be virulent, suggesting that T. minima overwinters on V. pallidum. Based on symptoms and scanning electron microscopy (SEM) of urediniospores, we hypothesize that V. elliottii, V. tenellum, V. pallidum, and V. corymbosum exhibit no host specificity to T. minima.

scholarly journals Inflorescence Bud Initiation, Development, and Bloom in Two Southern Highbush Blueberry Cultivars

2015 ◽  
Vol 140 (1) ◽  
pp. 38-44 ◽  
Author(s):  
Alisson P. Kovaleski ◽  
Jeffrey G. Williamson ◽  
James W. Olmstead ◽  
Rebecca L. Darnell
Keyword(s):  
Interspecific Hybrids ◽  
Shoot Growth ◽  
Late Summer ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Bud Development ◽  
Late Fall ◽  
Southern Highbush ◽  
Bud Initiation ◽  
The Relationship

Blueberry (Vaccinium spp.) production is increasing worldwide, particularly in subtropical growing regions, but information on timing and extent of inflorescence bud development during summer and fall and effects on bloom the next season are limited. The objectives of this study were to determine time of inflorescence bud initiation, describe internal inflorescence bud development, and determine the relationship between internal inflorescence bud development and bloom period the next spring in two southern highbush blueberry [SHB (Vaccinium corymbosum interspecific hybrids)] cultivars. ‘Emerald’ and ‘Jewel’ SHB buds were collected beginning in late summer until shoot growth cessation in late fall for dissection and identification of organ development. Inflorescence bud frequency and number, vegetative and inflorescence bud length and width throughout development, and bloom were also assessed. Inflorescence bud initiation occurred earlier in ‘Emerald’ compared with ‘Jewel’. Five stages of internal inflorescence bud development were defined throughout fall in both cultivars, ranging from a vegetative meristem to early expansion of the inflorescence bud in late fall. ‘Emerald’ inflorescence buds were larger and bloomed earlier, reflecting the earlier inflorescence bud initiation and development. Although inflorescence bud initiation occurred earlier in ‘Emerald’ compared with ‘Jewel’, the pattern of development was not different. Timing of inflorescence bud initiation influenced timing of bloom with earlier initiation resulting in earlier bloom.

LEAF AND BUD TEMPERATURES OF SOUTHERN HIGHBUSH BLUEBERRIES (VACCINIUM CORYMBOSUM) INSIDE HIGH TUNNELS

2011 ◽  
pp. 1319-1325
Author(s):  
A.B. Ogden ◽  
J. Kim ◽  
C.A. Radcliffe ◽  
M.W. van Iersel ◽  
L.A. Donovan ◽  
...  
Keyword(s):  
Vaccinium Corymbosum ◽  
High Tunnels ◽  
Highbush Blueberries ◽  
Southern Highbush

scholarly journals PLANT PARASITIC NEMATODES ASSOCIATED WITH RABBITEYE, SOUTHERN HIGHBUSH AND HIGHBUSH BLUEBERRIES

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 264D-264
Author(s):  
John R. Clark ◽  
Robert Robbins
Keyword(s):  
Parasitic Nematode ◽  
Nematode Species ◽  
Vaccinium Corymbosum ◽  
Parasitic Nematodes ◽  
Small Populations ◽  
Plant Parasitic Nematodes ◽  
Total Plant ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
Plant Parasitic

Two replicated blueberry plantings, one containing one highbush, (Vaccinium corymbosum) two southern highbush and two rabbiteye (V.ashei) cultivars, and another containing one highbush and three rabbiteye cultivars were sampled in October, 1991 and plant parasitic nematodes extracted and counted. Additionally, 15 commercial rabbiteye plantings were sampled. Standard and southern highbush samples had total plant parasitic nematode levels of 228-451 nematodes/250 ml soil compared to 4-14 nematodes/250 ml soil for rabbiteye. No difference in nematode population was found among the standard highbush ('Bluecrop') and southern highbush ('Cooper', 'Gulfcoast') cultivars. Xiphinema americanum was the most common nematode species found, along with very small populations of Paratrichodorus minor. All commercial plantings had lower nematode levels in samples from the blueberry plants as compared to those from the sod middles between the rows. Nematode levels from commercial plantings ranged from 1477/250ml soil from blueberry plants and 11-1546/250 ml soil from the sod middles. Species found at high levels in the sod samples were usually distinctly different from those found associated with the blueberry plants.

scholarly journals Effects of CPPU Applications on Southern Highbush Blueberries

HortScience ◽  
2007 ◽  
Vol 42 (7) ◽  
pp. 1612-1615 ◽  
Author(s):  
Jeffrey G. Williamson ◽  
D. Scott NeSmith
Keyword(s):  
Growth Regulator ◽  
Field Experiments ◽  
Fruit Set ◽  
Vaccinium Corymbosum ◽  
Highbush Blueberry ◽  
Berry Size ◽  
Spray Volume ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
Spray Timing

Greenhouse and field experiments were conducted to determine the effects of the growth regulator N-(2-chloro-4-pyridyl)-N′-phenylurea (CPPU) on fruit set, berry size, and yield of southern highbush blueberry (Vaccinium corymbosum hybrids). The experiments were conducted over a period of several years in Georgia and Florida. CPPU sprays were capable of increasing fruit set and berry weight of southern highbush blueberry, although the responses to CPPU treatment were variable and appeared to be influenced by factors such as rate, spray timing, and cultivar. In Florida, high natural fruit set may have prevented increased fruit set from CPPU. A slight delay in berry maturity was noted in several experiments. Spray burn occurred on several occasions and may be related to factors such as cultivar, rate, spray volume, and use of surfactant.

scholarly journals High-quality reference genome and annotation aids understanding of berry development for evergreen blueberry (Vaccinium darrowii)

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Jiali Yu ◽  
Amanda M. Hulse-Kemp ◽  
Ebrahiem Babiker ◽  
Margaret Staton
Keyword(s):  
Small Rna ◽  
Reference Genome ◽  
Anthocyanin Biosynthesis ◽  
Vaccinium Corymbosum ◽  
Small Rna Sequencing ◽  
High Quality ◽  
Protein Coding ◽  
Haplotype Assembly ◽  
Highbush Blueberries ◽  
Southern Highbush

AbstractVaccinium darrowii Camp (2n = 2x = 24) is a native North American blueberry species and an important source of traits such as low chill requirement in commercial southern highbush blueberry breeding (Vaccinium corymbosum, 2n = 4x = 48). We present a chromosomal-scale genome of V. darrowii generated by the combination of PacBio sequencing and high throughput chromatin conformation capture (Hi–C) scaffolding technologies, yielding a total length of 1.06 Gigabases (Gb). Over 97.8% of the genome sequences are scaffolded into 24 chromosomes representing the two haplotypes. The primary haplotype assembly of V. darrowii contains 34,809 protein-coding genes. Comparison to a V. corymbosum haplotype assembly reveals high collinearity between the two genomes with small intrachromosomal rearrangements in eight chromosome pairs. With small RNA sequencing, the annotation was further expanded to include more than 200,000 small RNA loci and 638 microRNAs expressed in berry tissues. Transcriptome analysis across fruit development stages indicates that genes involved in photosynthesis are downregulated, while genes involved in flavonoid and anthocyanin biosynthesis are significantly increased at the late stage of berry ripening. A high-quality reference genome and accompanying annotation of V. darrowii is a significant new resource for assessing the evergreen blueberry contribution to the breeding of southern highbush blueberries.

scholarly journals Risk-rated Economic Return Analysis for Southern Highbush Blueberries in Soil in Georgia

2007 ◽  
Vol 17 (4) ◽  
pp. 571-579 ◽  
Author(s):  
Esendugue Greg Fonsah ◽  
Gerard Krewer ◽  
Kerry Harrison ◽  
Michael Bruorton
Keyword(s):  
Vaccinium Corymbosum ◽  
Maintenance Cost ◽  
Total Annual Cost ◽  
First Year ◽  
Full Production ◽  
Net Revenue ◽  
Annual Total ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
The Cost

Southern highbush blueberries (Vaccinium corymbosum × V. darrowii hybrids) are a rapidly emerging crop with a bright future in Georgia; however, blueberries, like other fruit crops, are subject to price and yield fluctuation. These volatilities depend on several factors, including the cultivar produced and sold (i.e., fresh or frozen), locality, aggregate productivity, targeted market, and timing. As a result, profit margin is hard to determine. The objective of this study was to estimate total costs of cultivating southern highbush blueberries in soil under Georgia conditions and determine profitability, if any. Although there are several methods of profit determination, the risk-rated method was adopted for this study. The first-year establishment and maintenance cost of growing southern highbush blueberry in soil in Georgia using high organic matter (greater than 3%) spodic-type or allied sand soil series with supplemental pine bark incorporated was estimated at $9585.55/acre. The second-year establishment and maintenance cost of growing, harvesting, and marketing was $3691.99/acre less return from receipts of $2375.00/acre equal to $1316.99/acre. The third-year establishment and maintenance cost was $7068.20/acre. The total returns for the same year were $9500.00/acre. Subtracting the cost of $7068.20 from $9500.00 gives a net return of $2431.80/acre. The fourth-year cost, which was considered to be the first year of actual full production, was estimated at $13,547.35/acre. The compounded and recaptured establishment annual costs were $2176.43/acre. The risk-rated expected returns over total costs 66% of the time were $5452.65/acre. The chances of making profit were 92% and the base-budgeted net revenue was $6456.00/acre. Total budgeted cost was $3.38/lb. The estimated annual total fixed machinery cost was $290.41/acre. Total annual cost of solid set irrigation was $657.81/acre.

scholarly journals FRUITING IN SOUTHERN HIGHBUSH BLUEBERRIES: POLLEN SOURCE AND HONEY BEE POLLINATION EFFICIENCY

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 613f-614
Author(s):  
Robert G. Danka ◽  
Gregory A. Lang
Keyword(s):  
Honey Bees ◽  
Fruit Set ◽  
Floral Morphology ◽  
Vaccinium Corymbosum ◽  
Fruit Weight ◽  
Bee Pollination ◽  
Bee Foraging ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
Net Cages

`Gulfcoast' southern highbush blueberry (Vaccinium corymbosum × V. darrowi) plants were placed in 3 × 6 × 2.5 m net cages with one colony of honey bees per cage and one of three pollinizer treatments: “self (other `Gulfcoast' plants), “cross/highbush” (other southern highbush cultivars), or “cross/rabbiteye” (various rabbiteye blueberry cultivars). In addition to unlimited pollination, bee foraging was controlled on individual flowers by placing small bags over corollas after 0, 1, 5, or 10 visits. Fruit set, fruit weight, fruit development period, and seed number data were taken, as well as data to relate floral morphology to duration of bee foraging. All measures of fruiting increased significantly with increased bee visitation; the threshold for significant gains in production occurred between 1 and 5 visits. Ten visits generally provided a good approximation of unlimited pollination. Set, weight, and earliness of ripening was as good, or better, for fruit derived from rabbiteye pollen compared to fruit from self- or cross/highbush-pollination.

scholarly journals Postharvest Quality of Mechanically and Hand-harvested, Southern Highbush Blueberry Fruit for Fresh Market

2013 ◽  
Vol 23 (4) ◽  
pp. 437-441 ◽  
Author(s):  
Steven A. Sargent ◽  
Adrian D. Berry ◽  
Jeffrey G. Williamson ◽  
James W. Olmstead
Keyword(s):  
Titratable Acidity ◽  
Vaccinium Corymbosum ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Successful Implementation ◽  
Highbush Blueberry ◽  
Fresh Market ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
Solids Content

Three southern highbush blueberry cultivars (Vaccinium corymbosum hybrids) were mechanically harvested (MH) or hand-harvested (HH) and commercially packed before storage for 14 days at 1 °C in two successive years. MH fruit were softer, had lower ratings for overall appearance, and lost up to 20% more fresh weight than HH fruit after 14 days storage. MH ‘Meadowlark’ had fewer soft fruit (<35%) during storage than either ‘Sweetcrisp’ or ‘Farthing’; however, the latter two cultivars had lower incidences of shrivel and weight loss. Fruit in the 2010 season were more susceptible to bruising than those from the 2009 season; however, soluble solids content (SSC), total titratable acidity (TTA), and ascorbic acid concentration remained constant during storage and between seasons. ‘Meadowlark’ had the highest sugar to acid ratio (25.0). Successful implementation of MH of southern highbush blueberries for fresh market will only be commercially feasible if harvest impacts are further reduced.

scholarly journals Foliar Elemental Analysis of Southern Highbush, Rabbiteye, and Highbush Blueberries in the Southern United States

1994 ◽  
Vol 4 (4) ◽  
pp. 351-355 ◽  
Author(s):  
John R. Clark ◽  
David Creech ◽  
Max E. Austin ◽  
M.E. “Butch” Ferree ◽  
Paul Lyrene ◽  
...  
Keyword(s):  
United States ◽  
Elemental Analysis ◽  
Vaccinium Corymbosum ◽  
Southern United States ◽  
Southern States ◽  
Highbush Blueberries ◽  
Southern Highbush ◽  
Species Specific ◽  
Nutritional Monitoring

Highbush (Vaccinium corymbosum L.), rabbiteye (V. ashei Reade), and southern highbush (Vaccinium spp.) blueberries grown at seven locations in six southern states were sampled in 1988 and 1989 to determine foliar elemental levels among blueberry cultivars and types. Across locations, elemental levels of N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, and Al were similar for highbush and southern highbush types. Rabbiteye elemental levels were different from highbush and southern highbush for N, P, K, Ca, S, Mn, Cu, and Al. Rabbiteye blueberries appear to have different foliar levels, and may require species-specific standards for nutritional monitoring of plantings.

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