Trellising System and Cane Density Affect Yield and Fruit Quality of Red Raspberry

Trellising and cane density treatments were applied to vigorous raspberry (Rubus idaeus L.) cv. Titan plants in Southern Ontario to determine their effects on yield, yield potential, and canopy microclimate during the 1997 and 1998 seasons. The trellising treatments compared were hedgerow (control), V-trellis, and single-sided shift-trellis (shift-trellis). Cane densities (9, 16, 23, and 30 canes/m2) were established before budbreak each season. The treatments significantly affected yield and yield components. Path analysis indicated that interrelationships among yield components were significantly affected by trellising system. In the second season, plants trained on the V-trellis yielded more than did those in a hedgerow system, while those trained on a shift-trellis had the lowest yield because of a smaller fruiting framework. Fruit quality was lower on the shifttrellis than in the other two systems. These differences were related to light penetration into the three canopies. While an optimum cane density was not found for any system, the maximum cane density (30 canes/m2) produced the highest yields. Yield potential per cane decreased as cane density increased; however, the increase in cane number compensated for this decrease, resulting in an increase in total yield per unit area. Fruit quality also decreased as cane density increased, but cane density did not affect canopy microclimate.

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Genetic Variation and Covariation of Yield and Phytochemical Traits in a Red Raspberry Factorial Study

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.134.4.445 ◽

2009 ◽

Vol 134 (4) ◽

pp. 445-452 ◽

Cited By ~ 12

Author(s):

M. Joseph Stephens ◽

Jessica Scalzo ◽

Peter A. Alspach ◽

Ron A. Beatson ◽

Ann Marie Connor

Keyword(s):

Yield Components ◽

Total Yield ◽

Rubus Idaeus ◽

High Yield ◽

Red Raspberry ◽

Narrow Sense Heritability ◽

Breeding Programs ◽

Berry Weight ◽

Genotypic Correlations ◽

Heritability Estimates

Breeding for high yield is a major objective of most small fruit breeding programs worldwide. In recent years, research associated with health benefits of berry fruit has resulted in some breeding programs looking for material with improved health properties with the goal of incorporating these into genotypes with high yield and other favorable agronomic characters. In this study, we estimated variance components, heritabilities, and phenotypic and genotypic correlations for yield components and phytochemicals [total phenolics (TPH), antioxidant activity (FRAP), and total anthocyanins (TACY)] from 828 genotypes in a red raspberry (Rubus idaeus) factorial mating design based on 42 full-sib families derived from seven female and six male parents harvested in one season in New Zealand. Narrow sense heritability estimates varied from moderately low [0.23 for percent budburst (PCBB)] to high [0.82 for mean berry weight (BWT)]. Highest genotypic correlations with total yield (TYLD) were found for mean cane length (0.60) followed by moderate correlations for PCBB (0.38), BWT (0.34) and fruit number per unit lateral (0.31). For these four components, the correlation between the product of the empirical breeding values (eBV) and TYLD was as good (0.67) as the correlation between the product of the seven yield components measured (0.68). Moderately high negative genotypic correlations were found between TYLD and TPH (–0.67), FRAP (–0.68), and TACY (–0.64), suggesting that breeding for high-yielding genotypes may result in reduced phytochemical levels. A pigment-deficient R. parvifolius × R. idaeus hybrid derivative parent (R. parv deriv) had the most influence on berry weight as a yield component. Removal of the R. parv deriv progeny from the analysis increased the contribution of berry weight to total yield. Heritability estimates were generally lower when the R. parv deriv crosses were omitted, particularly for number of canes BWT, TYLD, and the phytochemicals. Implications of R. parv deriv crosses on these results are discussed. Of the 828 genotypes, only five had an eBV for total yield greater than that of the best yielding parent, whereas 49 had larger berries than the best parent. None of the 828 genotypes had an eBV for yield components or phytochemicals less than that of the lowest parent, whereas 13 had a higher eBV associated with phytochemicals than that of the highest parent.

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184 The Influence of Trellising System and Cane Density on `Titan' Red Raspberries

HortScience ◽

10.21273/hortsci.34.3.474a ◽

1999 ◽

Vol 34 (3) ◽

pp. 474A-474

Author(s):

Justine Vanden Heuvel ◽

J. Alan Sullivan ◽

John T.A. Proctor

Keyword(s):

Path Analysis ◽

Fruit Quality ◽

Yield Components ◽

The Other ◽

Yield Potential ◽

Light Penetration ◽

Lower Yield ◽

Berry Quality ◽

Yield And Yield Components

The effect of three trellising systems (Hedgerow, V-Trellis, and Single-Sided Shift-trellis) and four cane densities were studied on Rubus ideaus L. cv. Titan red raspberries. Yield, cane growth, canopy microclimate, disease load, canopy light penetration, and fruit quality were examined. The treatments significantly affected yield and yield components. The V-trellis had a higher yield (+19%) and a larger fruiting framework than the hedgerow, while the shift-trellis had a lower yield than the hedgerow (-36%) and the V-trellis (-50%) due to a small fruiting framework. Path analysis indicated that interrelationships among yield components were significantly affected by trellising system. The shift-trellis was found to have lower quality berries than the other systems. These differences were related to light penetration into the different canopies. An optimum cane density was not found for any system. Yield potential per cane decreased as cane density increased; however yield per square meter increased as cane number increased. Berry quality decreased as cane density increased. Differing cane density did not affect canopy microclimate or disease load.

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Numerical Evaluation for Total Yield and Fruit Quality of Five LocalPrickly Pear Strains under El-Monofia Governorate Conditions

Middle East Journal of Agriculture Research ◽

10.36632/mejar/2020.9.4.73 ◽

2020 ◽

Keyword(s):

Fruit Quality ◽

Numerical Evaluation ◽

Total Yield

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Performance of Three Primocane-fruiting Red Raspberry Cultivars in Ontario and Québec

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.118.3.388 ◽

1993 ◽

Vol 118 (3) ◽

pp. 388-392 ◽

Cited By ~ 3

Author(s):

Jean-Pierre Privé ◽

J.A. Sullivan ◽

J.T.A. Proctor ◽

O.B. Allen

Keyword(s):

Maximum Yield ◽

Rubus Idaeus ◽

Yield Potential ◽

Red Raspberry ◽

Genotype X Environment ◽

Genotype X Environment Interactions ◽

Consistent Performance

The influence of genotype x environment interactions on the performance of `Autumn Bliss' `Heritage' and `Redwing' primocane-fruiting (PF) red raspberry (Rubus idaeus L.) cultivars was studied at six sites across Ontario and Quebec during 1989 and 1990. Cultivar × location × year interactions were found for most vegetative and reproductive components analyzed. `Autumn Bliss' had the most consistent performance of the three cultivars in all location/year combinations, while `Redwing' varied greatly between environments. `Heritage' was always the latest-bearing of the three cultivars and failed to achieve its maximum yield potential in many of the northern locations.

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Effect of different staking methods and stem pruning on yield and quality of summer tomato

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v41i3.29714 ◽

2016 ◽

Vol 41 (3) ◽

pp. 419-432

Author(s):

MS Alam ◽

N Islam ◽

S Ahmad ◽

MI Hossen ◽

MR Islam

Keyword(s):

Fruit Quality ◽

Fruit Set ◽

Block Design ◽

Total Yield ◽

Point Of View ◽

Fruit Firmness ◽

Economic Point ◽

Yield And Quality ◽

Agriculture Research Institute

The study was carried out during summer of 2012 with BARI hybrid tomato 4, planted in the Olericulture farm of Bangladesh Agriculture Research Institute, Joydebpur, Gazipur, Bangladesh to find out the response of plants to some staking and pruning treatments on yield, fruit quality and cost of production. A two factor experiment consisting of three staking methods and four level of pruning, laid out in complete block design with three repetitions. Plants were staked on inverted V? shaped staking, high platform and string. The plants were pruned to two stem, three stem, four stem and no pruning as control. Results showed that significantly the highest total number of fruits per plant (37.1), marketable fruits per plant (33.7), yield per plant (1.68 kg) and total yield (44.6 t/ha) were produced by the plants having the treatment string staking with four stem. The highest fruit set (43.50%) was found in the plants staking with string having three stems. Plants grown on string staking allowing two stem gave the maximum length (4.71 cm), diameter (4.83 cm) and weight (53.4g) of single fruit as well as maximum fruit firmness (3.43 kg-f cm-2). From the economic point of view, it was apparent that summer tomato produced by string staking with four stem pruning exhibited better performance compared to other treatment combinations in relation to net return and BCR (2.10).Bangladesh J. Agril. Res. 41(3): 419-432, September 2016

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INHERITANCE OF YIELD, YIELD COMPONENTS, AND FALL-FRUITING HABIT IN RED RASPBERRY DIALLEL CROSSES

Canadian Journal of Genetics and Cytology ◽

10.1139/g77-001 ◽

1977 ◽

Vol 19 (1) ◽

pp. 1-13 ◽

Cited By ~ 8

Author(s):

S. O. Fejer

Keyword(s):

Inbreeding Depression ◽

Yield Components ◽

Solid Content ◽

Rubus Idaeus ◽

Total Soluble Solid ◽

Soluble Solid Content ◽

Red Raspberry ◽

Diallel Crosses ◽

Reciprocal Differences ◽

Soluble Solid

From a series of 4 × 4 diallel crosses in the red raspberry (Rubus idaeus L.), it was determined that inheritance was predominantly additive for fruit yield and weight, fall-fruiting habit, day of flowering and total soluble solid content. However, it was mainly nonadditive for numbers of cane branches and laterals. Inbreeding depression was found for the yield of seedlings from sib-crosses within individual diallels. Reciprocal differences were noted for some characters.

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YIELD COMPONENTS AND FRUIT QUALITY OF FLORICANE FRUITING RASPBERRY CULTIVARS GROWN IN SERBIA

Acta Horticulturae ◽

10.17660/actahortic.2012.946.12 ◽

2012 ◽

pp. 95-99

Author(s):

J. Milivojević ◽

M. Nikolić ◽

D. Radivojević ◽

M. Poledica

Keyword(s):

Fruit Quality ◽

Yield Components

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Resistance to Botrytis cinerea and Quality Characteristics during Storage of Raspberry Genotypes

HortScience ◽

10.21273/hortsci.49.3.311 ◽

2014 ◽

Vol 49 (3) ◽

pp. 311-319 ◽

Cited By ~ 6

Author(s):

Julia M. Harshman ◽

Wayne M. Jurick ◽

Kim S. Lewers ◽

Shiow Y. Wang ◽

Christopher S. Walsh

Keyword(s):

Botrytis Cinerea ◽

Weather Conditions ◽

Decay Rates ◽

Rubus Idaeus ◽

Soluble Solids ◽

Postharvest Quality ◽

Red Raspberry ◽

Ethylene Evolution ◽

Weather Factors

Raspberries are a delicate, high-value crop with an extremely short shelf life exacerbated by postharvest decay caused by Botrytis cinerea Pers. European red raspberry (Rubus idaeus L.) is the most widely grown variety. Yellow (R. idaeus L.), black (R. occidentalis L.), and purple raspberries (R. ×neglectus Peck. or R. occidentalis ×idaeus hybrids) are available mainly at local markets and U-pick farms. To compare the postharvest quality of the raspberry color groups, pesticide-free fruit from cultivars and breeding selections of red, yellow, purple, and black raspberries were examined for oxygen radical absorbance capacity (ORAC), phenolics, anthocyanins, soluble solids, titratable acids, pH, color, firmness, decay and juice leakage rates, ethylene evolution, and respiration. There were significant correlations between decay rate and physiochemical properties. Both decay and leakage rates were correlated with weather conditions before harvest, but each color group responded differently to different weather factors. There were no correlations among changes in color, firmness, decay, or juice leakage rates. All the other color groups were less acidic than the familiar red raspberry. Yellow raspberries had the worst decay rates but the best leakage rates. Black and purple raspberries, with the highest phenolics and anthocyanins and the lowest ethylene evolution rates, resisted decay the longest but bled soonest.

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Genetic Parameters and Breeding for Yield in Red Raspberry

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.137.4.229 ◽

2012 ◽

Vol 137 (4) ◽

pp. 229-235 ◽

Cited By ~ 9

Author(s):

M. Joseph Stephens ◽

Peter A. Alspach ◽

Ron A. Beatson ◽

Chris Winefield ◽

Emily J. Buck

Keyword(s):

Genetic Correlation ◽

Total Yield ◽

Fruit Size ◽

Rubus Idaeus ◽

High Yield ◽

Red Raspberry ◽

Narrow Sense Heritability ◽

Breeding Values ◽

Berry Weight ◽

Small Fruit

For most small fruit-breeding programs, high yield is a key objective and breeders face a number of challenges breeding for high yield, including interaction of environmental influences and the high cost of yield measurements. Red raspberry (Rubus idaeus) yield is determined by a number of yield components (YC), including cane number, cane length, number of fruiting laterals, fruit numbers, and fruit size. The ultimate goal for breeders would be to be able to select for high-yield genotypes using key YC as early in the life of the plant as possible. In this study we set out to determine how individual components of yield are inherited, determine which components contribute the most to total yield, and investigate whether it is possible using key components to make selections for high-yielding genotypes on 1- and 2-year-old plants. We estimated variance components, heritabilities, phenotypic and genotypic correlations, and breeding values for yield and YC from 1008 genotypes based on 85 families derived from 45 parents harvested over three seasons in Washington state. Narrow-sense heritability estimates varied from moderately low [0.2 for number of canes (NCAN)] to moderately high [0.69 for berry weight (BWT)]. In general, all YCs were positively correlated with total yield (TYLD). The highest genetic correlation with TYLD was found for BWT (0.8), followed by cane length (CLEN) (0.54) and number of fruit per lateral (NFRT) (0.5). NCAN had the lowest genetic correlation with TYLD (–0.03). Genotype × year (G×Y) interaction was higher for some YCs than others. Berry weight, lateral length (LLEN), and NFRT were found to be the most stable overall seasons and the interaction was higher between the first and second years than between the second and third years of the study. To determine the most important YC, we calculated the correlations between the product of all combinations of subsets of the YC breeding values and TYLD. Berry weight, CLEN, and cane diameter (CDIA) were found to be the most important for 2009, 2010, and 2011, respectively. The two most important YCs were LLEN and BWT and this was consistent overall seasons. We demonstrate that it is possible to select high-yielding genotypes by measuring key components such as LLEN, CLEN, and BWT in the first and second fruiting seasons.

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