scholarly journals A preliminary study on some features of two new resistant apple cultivars in a multi-row planting system

2019 ◽  
Vol 25 (3-4) ◽  
Author(s):  
Á. Csihon ◽  
I. Gonda ◽  
P. Vámos ◽  
D. Barna ◽  
I. J. Holb
Keyword(s):  
Fruit Size ◽  
Fruit Tree ◽  
Planting Density ◽  
Surface Color ◽  
Double Row ◽  
Spring Frost ◽  
The Third ◽  
Late Spring Frost ◽  
Apple Cultivars ◽  
Vigorous Growth

The aim of this work was to report preliminary results on some features of two new resistant apple cultivars (cvs. ‘Galiwa’ and ‘Story Inored’) in multi-row system in the early bearing years of the orchard. Trees were planted in spring of 2015 in double row design (3.5 m+1.4 m x 1.0 m) with planting density of 5357 tree/ha. According to our results cv. ‘Story Inored’ presented more vigorous growth, than cv. ‘Galiwa’. Trees of cv. ‘Story Inored’ reached 2.7 m in the third year, but cv. ‘Galiwa’ could reach only 1.95 meter. Due to late spring frost 100% yield loss was observed in the second year. In 2017 cv. ‘Galiwa’ produced 5.3 kg/tree (25 fruit/tree), while cv. ‘Story Inored’ presented 7.7 kg/tree (50 fruit/tree). Average yield was 28.4 t/ha for cv. ‘Galiwa’, as ‘Story Inored’ reached 41.3 t/ha in the third year. Cultivar ‘Galiwa’ reached the required fruit size (79.1 mm), but its coloration was weaker (43% fruit surface color). Cultivar ‘Story Inored’ can be described with smaller fruit size (69 mm) and higher percentage of surface color (93%).

scholarly journals Tree vegetative and generative properties and their inter-correlations for prospective apple cultivars under two training systems for young trees

2022 ◽  
Author(s):  
Ádám Csihon ◽  
István Gonda ◽  
Szilárd Szabó ◽  
Imre J. Holb
Keyword(s):  
Shape Index ◽  
Fruit Tree ◽  
Fruit Color ◽  
Training System ◽  
Regression Analyses ◽  
Color Intensity ◽  
Surface Color ◽  
Apple Cultivars ◽  
Fruit Surface ◽  
Fruit Diameter

AbstractLittle information is available on vegetative and generative performance of apple cultivars during the early growth of trees in orchards. The aim of this five-year study was to evaluate 2 vegetative (trunk cross sectional area (TCSA) and tree height (TH)) and 7 generative parameters (tree yield (TY), fruit number per tree (FNT), crop load (CL), fruit diameter (FD), shape index (SI), fruit surface color (FSC) and fruit color intensity (FCI)) and their inter-correlations (Pearson correlation, regression analyses and PCA) for young apple trees, on 9 apple cultivars (‘Jugala’, ‘Galaval’, ‘Gala Venus Fengal’, ‘Gala Decarli-Fendeca’, ‘Gala Schnitzer (S) Schniga’, ‘Fuji September Wonder’, ‘Crimson Crisp (Co-op 39)’, ‘Jeromine’, and ‘Red Idared’) in a slender spindle training system (2597 trees ha−1) and on 4 apple cultivars (‘Wilton’s Red Jonaprince’, ‘Red Cap Valtod (S)’, ‘Early Red One’, and ‘Red Topaz’) in a super spindle training system (5194 trees ha−1) in Eastern Hungary. The strongest vegetative growth was observed in ‘Red Idared’, while the weakest was in ‘Early Red One’. Most ‘Gala’ mutants showed high yields in all years, except for ‘Galaval’. On the 6 year-old trees, the lowest tree yield was found in ‘Fuji September Wonder’ (8.2 kg tree−1), while the highest was found in ‘Gala Venus Fengal’ (35.8 kg tree−1). The lowest fruit number per tree (15 fruit tree−1) was found in ‘Jeromine’, while the highest (222 fruit tree−1) was in ‘Gala Venus Fengal’. The highest crop load was found in ‘Gala Venus Fengal’ (12.72 fruit per cm2 TCSA), while the lowest was in ‘Jeromine’ (2.13 fruit per cm2 TCSA). The smallest fruit diameter (66.3 mm) was recorded in ‘Gala Schnitzer (S) Schniga’, while highest (93.6 mm) was in ‘Red Idared’. The lowest shape index (0.73) was found in ‘Red Topaz’, while the highest (0.92) was in ‘Red Idared’. The majority of the cultivars reached very good fruit surface color (80–100%). The lowest fruit surface color (40%) was observed in ‘Gala Schnitzer (S) Schniga’, while the highest (100%) was in ‘Jeromine’ and ‘Early Red One’. The highest fruit color intensity was observed in most cultivars with the exception of ‘Jeromine’, ‘Gala Schnitzer (S) Schniga’ and’Fuji September Wonder’. In addition, correlation and regression analyses revealed strong and significant (p = 0.05) relationships between TH vs TCSA, TY vs TCSA, TH vs TY, TY vs FNT, and FCI vs FSC. PCA explained 87% of the total variance and PC1, PC2, PC3, and PC4 accounted for 33, 21, 20, and 13% of the variance, respectively, and correlated with TSCA, TH, TY and FNT; with FNT, CL and FS; with FSC and FCI; and with TH and SI, respectively. In conclusion, our study provides useful tree property data on prospective mutants/cultivars for growers/advisors in order to select the most suitable cultivars for establishing new orchards under climate conditions similar to central Europe.

scholarly journals Growing technology of crowned trees of columnar apple cultivars at Russian research institute of fruit crop breeding

2020 ◽  
pp. 99-101
Author(s):  
S. A. Korneyeva ◽  
E. N. Sedov ◽  
T. V. Yanchuk
Keyword(s):  
Research Work ◽  
Tree Planting ◽  
Planting Density ◽  
Crop Breeding ◽  
Fruit Crop ◽  
The Third ◽  
Russian Research Institute ◽  
Apple Cultivars ◽  
Russian Research ◽  
Research Institute

Relevance. Selection of columnar apple cultivars and development of adapted elements of their cultivation technology are one of the promising areas of the research work of the Russian Research Institute of Fruit Crop Breeding. The result of 36 years of the target selection work was the creation of 5 columnar apple cultivars accepted in the State Register of breeding achievements: ‘Priokskoye’, ‘Poezia’, ‘Vostorg’, ‘Girlianda’ and ‘Orlovskaya Yesenia’. All cultivars are characterized by high precocity, productivity and immunity to scab. The special habit of the columnar shape of the apple tree determines a special type of planting that is characteristic only for it, providing for super-dense placement of trees.Results. Our research experimentally demonstrates the possibility of reducing the total number of plants per hectare while maintaining a high density of fruit wood in the orchard. These technologies will significantly reduce the amount of necessary planting material, therefore, reduce the initial cost of laying a columnar apple orchard. Thus, when growing columnar cultivars in the crown of a 3–4-98 semi- dwarf rootstock with a tree planting density of 3333 trees per hectare, the number of columnar branches corresponds to the plantation with a density of 20,000 columnar trees per 1 ha. The study of this technology showed that the cultivars entered fruiting in the third year after grafting of 2-year-old skeletal trees; the yield of the studied columnar cultivars for the first 10 years of fruiting averaged 81.6 t/ ha. Annual fruiting was observed throughout the entire observation period. Another promising option is to grow columns in the form of crowned plants on a dwarf rootstock 62–396. The crown on average consists of 5 branches, while the total number of columnar branches reaches 12 500 PCs/ha. The proportion of trees that entered fruiting in the third year after grafting depended on the depth of seedling planting. For normal planting, it was 28%, which is twice the same value for deep planting (15 cm below the root neck).

scholarly journals Fruit Distribution and Early Thinning Intensity Influence Fruit Quality and Productivity of Peach and Nectarine Trees

2002 ◽  
Vol 127 (6) ◽  
pp. 892-900 ◽  
Author(s):  
Carlos Miranda Jiménez ◽  
J. Bernardo Royo Díaz
Keyword(s):  
Prunus Persica ◽  
Fruit Size ◽  
Frost Damage ◽  
Negative Influence ◽  
High Concentration ◽  
Full Bloom ◽  
Spring Frost ◽  
Thinning Intensity ◽  
Late Spring Frost ◽  
Fruit Diameter

Peach [Prunus persica (L.) Batsch, Peach Group] tree productivity is improved if trees are thinned early, either in full bloom or when the fruit is recently set. Chemical thinning reduces the high cost of manual thinning and distributes the fruit irregularly on the shoots. The effect is similar to a late spring frost that mostly affects early flower buds on the tip of the shoot. To simulate frost damage (or chemical thinning) and evaluate the effect of fruit distribution on production, fruit growth of several peach cultivars—'Catherine', `Baby Gold 6', `Baby Gold 7', `O'Henry', `Sudanell' and `Miraflores'—and the nectarine [Prunus persica (L.) Batsch, Nectarine Group] `Queen Giant' was studied in the central Ebro Valley (Spain) in 1999 and 2000. The factors investigated were the intensity of thinning and fruit distribution on the shoot (concentrated in the basal area or uniformly placed). The treatments were performed at 30 days after full bloom in 1999 and at bloom in 2000. For `Baby Gold 6' and `Miraflores' and when fruit load was high after thinning (over four fruit per shoot), a high concentration of fruit on the basal portion of the shoot had a negative influence on final yield and fruit size. The intensity of thinning (or simulated frost) greatly affected fruit diameter but was also strongly related to cultivar, tree size, and length of shoots. Thus, relationships between thinning intensity and fruit diameter varied, even among trees of the same cultivar.

scholarly journals Long-term Effects of Training Systems and Rootstocks on ‘McIntosh’ and ‘Honeycrisp’ Performance, a 15-year Study in a Northern Cold Climate—Part 1: Agronomic Analysis

HortScience ◽  
2018 ◽  
Vol 53 (7) ◽  
pp. 968-977 ◽  
Author(s):  
Jaume Lordan ◽  
Anna Wallis ◽  
Poliana Francescatto ◽  
Terence L. Robinson
Keyword(s):  
Fruit Size ◽  
Vertical Axis ◽  
Efficiency Index ◽  
Training System ◽  
Cold Climate ◽  
Planting Density ◽  
Long Term Effects ◽  
Cumulative Yield ◽  
Training Systems ◽  
Apple Cultivars

Choice of cultivar, training system, planting density, and rootstock affect orchard performance and profitability. To provide guidance to growers in northern cold climates on these choices, a field trial was established in Peru, Clinton County, NY, in 2002, with two apple cultivars (Honeycrisp and McIntosh). From 2002 through 2016, we compared Central Leader on ‘M.M.111’; Slender Pyramid on ‘M.26’ and ‘Geneva® 30’ (‘G.30’); Vertical Axis on ‘M.9 (Nic® 29)’ (‘M.9’), ‘Budagovsky 9’ (‘B.9’), and ‘G.16’; SolAxe on ‘M.9’, ‘B.9’, and ‘G.16’; and Tall Spindle on ‘M.9’, ‘B.9’, and ‘G.16’. Central Leader was planted at 539 trees/ha, Slender Pyramid at 1097 trees/ha, Vertical Axis and SolAxe at 1794 trees/ha, and Tall Spindle at 3230 trees/ha. Cumulative yield was higher with ‘McIntosh’ than with ‘Honeycrisp’. High planting densities (Tall Spindle) gave the highest cumulative yields (593 t·ha−1 on ‘McIntosh’ and 341 t·ha−1 on ‘Honeycrisp’). Tall Spindle (3230 trees/ha) on ‘M.9’ appeared to be the best option for ‘McIntosh’. On the other hand, for a weak-growing cultivar such as ‘Honeycrisp’, Tall Spindle on ‘B.9’ (366 t·ha−1) and Slender Pyramid (1097 trees/ha) on ‘G.30’ (354 t·ha−1) were the two combinations with the highest cumulative yield, largest fruit size (220–235 g), and greatest efficiency index (4.6–3.9 kg·cm−2).

scholarly journals Evaluation of generative accomplishment of new apple cultivars in Hungary

2015 ◽  
Vol 21 (1-2) ◽  
pp. 11-15
Author(s):  
Á. Csihon ◽  
I. J. Holb ◽  
I. Gonda
Keyword(s):  
Fruit Size ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Color Intensity ◽  
Surface Color ◽  
Cross Sectional ◽  
Slender Spindle ◽  
Apple Cultivars ◽  
Old Trees ◽  
Fruit Surface

In a two year study, 14 new apple cultivars (cvs ’Gala Venus Fengal’, ’Gala Decarli-Fendeca’, ’Galaval’, ’Jugala’, ’Gala Schnitzer (S) Schniga’, ’Red Cap Valtod (S)’, ’Early Red One’, ’Jeromine’, ’Crimson Crisp (Co-op 39)’, ’Red Topaz’, ’Wilton’s Red Jonaprince’, ’Red Idared’, ’Fuji September Wonder’ and club cultivar) were studied in Eastern Hungary at Nyírbátor. The following parameters were measured: trunk cross sectional area (cm2), harvest time with yield (date, kg/tree, number/tree), fruit size (mm), fruit surface color (%), and color intensity of the fruit surface (1-5). According to our two year assessments regarding, the best generative accomplishment was achieved for the cvs ‘Gala’ sorts trained to slender spindle and the cv ‘Red Jonaprince’ trained to super spindle. According to the trunk cross sectional area the ‘Gala’ sport trained to slender spindle showed the strongest growth among the 4 years old trees, while the cv ‘Fuji SW’ and the cv ‘Jeromine’ presented lower vegetative accomplishment. The ripening time of the cultivars started at the end of August and finished at the beginning of October. ‘Gala’ mutants trained to slender spindle provided the highest yields. Fruit size of all cultivars reached the market required standard, however, cvs ‘Red Jonaprince’ and ‘Red Idared’ produced large fruits over 90 mm. The fruit size of the ‘Gala’ sort was 72–75 mm. Most of the cultivars showed high fruit surface color and color intensity.

scholarly journals Early Performance of Four Apple Cultivars on Mark and M.26 Rootstocks

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 792F-793
Author(s):  
James R. Schupp
Keyword(s):  
Malus Domestica ◽  
Fruit Size ◽  
Cross Sectional Area ◽  
Planting Density ◽  
Sectional Area ◽  
Cross Sectional ◽  
Crop Load ◽  
Apple Cultivars ◽  
Early Performance ◽  
Plot Design

To evaluate the interactions between cultivar and rootstock, four apple (Malus domestica Borkh.) cultivars, `Pioneer Mac', `Marshall McIntosh', `Ginger Gold', and `Empire' on two rootstocks, M.26 and Mark, were planted in a split-plot design. After 5 years, `Pioneer Mac' and `Ginger Gold' had larger trunk cross-sectional area (TCSA) on M.26 than on Mark. `Marshall McIntosh' and `Empire' had larger TCSA on Mark than on M.26. Precocity, expressed as both number of flower clusters and yield, was greater for trees on Mark for all cultivars except `Ginger Gold', which had greater flower cluster numbers and yield on M.26. Fruit size was variable from year to year, depending on crop load; however, `Pioneer Mac' and `Ginger Gold' usually produced the largest fruit, while `Empire' consistently produced the smallest fruit—'Ginger Gold' appears to be incompatible on Mark. The results of this study demonstrate that cultivar × rootstock interactions can be significant and need to be considered when rootstock and planting density recommendations are made.

Blossom Thinning in Pome and Stone Fruit

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 553b-553
Author(s):  
Esmaeil Fallahi
Keyword(s):  
Fruit Size ◽  
Naphthalene Acetic Acid ◽  
Full Bloom ◽  
Flower Bud ◽  
Hydrogen Cyanamide ◽  
Ammonium Thiosulfate ◽  
The Past ◽  
Apple Cultivars ◽  
Ortho Cresol ◽  
Bud Initiation

Early thinning of apples is important because of its impact on fruit size and next season's flower bud initiation. In the past, apple cultivars were often sprayed with the blossom thinner sodium dinitro-ortho-cresol(Elgetol) during full bloom, followed by a post-bloom application of a fruit thinner such as carbaryl with or without naphthalene acetic acid (NAA). Elgetol was removed from the market in 1989 because of the high cost of re-registration. Full-bloom sprays of sulfcarbamide (Wilthin), pelargonic acid (Thinex), and endothalic acid (Endothal), ammonium thiosulfate (ATS) or petal fall spray of carbaryl (Sevin XLR Plus) were developed as replacements for Elgetol. Hydrogen cyanamide (HC) and other chemicals have been used to eliminate or to reduce chilling requirements of peaches grown under the warm desert conditions. HC applied at “pink bloom” stage was observed to reduce the number of open blooms in `Florda Prince' peach; therefore, it was first used for blossom thinning in this cultivar in Arizona. Later, HC was also found to be an effective blossom thinner for plums in Idaho. HC has recently been found to effectively thin apple and peach blossoms. Armothin has also been an effective blossom thinner for peach in California.

scholarly journals Methods for the Quantification of Resistance of Apple Genotypes to European Fruit Tree Canker Caused by Neonectria ditissima

Plant Disease ◽  
2017 ◽  
Vol 101 (12) ◽  
pp. 2012-2019 ◽  
Author(s):  
M. Wenneker ◽  
P. W. Goedhart ◽  
P. van der Steeg ◽  
W. E. van de Weg ◽  
H. J. Schouten
Keyword(s):  
Statistical Significance ◽  
Lesion Size ◽  
Fruit Tree ◽  
Infection Frequency ◽  
Pome Fruit ◽  
Start Date ◽  
Apple Cultivars ◽  
Lesion Growth ◽  
Two Parameters ◽  
Parallel Tests

European fruit tree canker, caused by Neonectria ditissima, is an important disease of pome fruit worldwide. Apple cultivars differ in their levels of susceptibility to N. ditissima. In order to design an effective plant resistance test, we examined the effectiveness of two resistance parameters: infection frequency and lesion growth. Both parameters were evaluated in parallel tests using 10 apple cultivars in three experimental years, applying seminatural infection of leaf scars (infection frequency) or inoculation of artificial wounds (lesion growth). We compared six parameters for lesion growth, of which a new parameter, lesion growth rate (LGR), appeared to be the best with respect to reproducibility and statistical significance. LGR is defined as the slope of the regression of lesion size versus time. The slope was estimated for each lesion, employing a common start date and a lesion-specific end date determined by the girdling of the lesion. The two parameters (infection frequency and LGR) were examined in separate experiments and in three successive years, and provided complementary information and resulted in reproducible conclusions on the relative resistance levels to N. ditissima of the tested cultivars. The presented methods can be used to develop strategies for the control of European fruit tree canker (e.g., in the breeding of new apple cultivars with high levels of resistance to N. ditissima).

scholarly journals The impact of location, row direction, plant density and rootstock on the sunburn damage of apple cultivars

2005 ◽  
Vol 11 (1) ◽  
Author(s):  
J. Racskó ◽  
J. Nagy ◽  
Z. Szabó ◽  
M. Major ◽  
J. Nyéki
Keyword(s):  
Solar Radiation ◽  
Leaf Area ◽  
Fruit Quality ◽  
Plant Density ◽  
Fruit Size ◽  
Quality Parameters ◽  
Apple Seedling ◽  
Apple Cultivars ◽  
The Impact ◽  
Crab Apple

The effect of row direction (N-S, E-W), plant density (conventional and intensive) and rootstock (M9, MM106 and crab apple) on the sensitivity of 41 apple cultivars to sunburn injury was studied at 6 locations (Derecske, Kálmánáaza, Nagykutas, Nagylapos, Siófok, Tornyospálca). During the observations the cultivars had rootstock-specific properties in respect of sunburn-susceptibility. Accordingly, the injury was decreased in the order: M9, MM106 and seedling rootstocks. The differences in sensitivity depend on the canopy of trees, caused finally by the growing vigour of rootstocks. Accordingly, the highest value of sunburn injury was observed on M9 rootstock, because this rootstock has a dwarfing effect upon the scion cultivars. Thus, vegetative area of these trees grow very slowly and the foliage is not enough compact to protect the fruit from solar radiation. The size and density of the foliage increased in the order: M9, MM 106 and crab apple seedling as rootstock. Moreover, relationships were demonstrated between the diameter of upper part of the crown, the leaf area, the number of fruits per tree and the injury of sunburn. Authors categorized the cultivars in respect of values of sunburn incidence: 1. „Not sensitive", II. „Moderately sensitive" and HI. „Strongly sensitive" categories were constituted. Generally, Topaz and Gala cultivars showed low damage (or were free from symptoms), in contrast to this, Golden mutants suffered relatively much. The most sensitive cultivar was Jonica on all the three rootstocks. We searched for relationship between the fruit quality parameters and the frequency of sunburn. Significant correlation was found in the cases of fruit size and the extent of cover-colour. The latter is interpreted with the fact that the best coloured fruits are found on the periphery of crown as a consequence of more intense irradiation.

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