Effect of Interstock Bridge Grafting on Fruit Quality at Harvest and During Storage of Four Apple Cultivars

1999 ◽  
Vol 2 (3) ◽  
pp. 969-973
Author(s):  
Abdul Samad . ◽  
D.L. McNeil . ◽  
M. M. Bunker . ◽  
Z.U. Khan .
Keyword(s):  
Fruit Quality ◽  
Apple Cultivars

scholarly journals Fruit quality of ‘Eva’ e ‘Princesa’ apples grown under nitrogen fertigation in semiarid climate

2015 ◽  
Vol 19 (10) ◽  
pp. 967-972 ◽  
Author(s):  
João M. de S. Miranda ◽  
Ítalo H. L. Cavalcante ◽  
Inez V. de M. Oliveira ◽  
Paulo R. C. Lopes ◽  
Joston S. de Assis
Keyword(s):  
Fruit Quality ◽  
Skin Color ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Economic Viability ◽  
Fruit Firmness ◽  
Fruit Characteristics ◽  
Apple Cultivars ◽  
Fruit Mass

ABSTRACTThe production of high quality fruits is a necessary factor for the adaptation and production of plant species with economic viability. Thus, an experiment was conducted from July 2012 to January 2013 to evaluate the fruit quality of the ‘Eva’ and ‘Princesa’ apple cultivars as a function of nitrogen fertilization in Petrolina, PE, Brazil. The experimental design consisted of randomized blocks, with treatments distributed in a factorial arrangement 2 x 4, corresponding to apple cultivars (Eva and Princesa) and nitrogen doses (40; 80; 120 and 160 kg of N ha-1), with four replications and three plants in each plot. The fruit characteristics, such as fruit mass, skin color (luminosity, chromaticity, and colour angle), size (width and length), pulp firmness, titratable acidity (TA), soluble solids (SS) and the SS/TA ratio, were recorded. Nitrogen doses do not affect fruit quality of studied apple cultivars. The fruit quality attributes are different between apple cultivars: fruit firmness, SS/TA ratio, fruit mass and fruit diameter are superior for Princesa cultivar, while the fruit length for Eva cultivar is superior.

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.

scholarly journals The effect of nitrogen supply on specific yield and fruit quality of apple (Malus domestica Borkh.)

2005 ◽  
Vol 11 (2) ◽  
Author(s):  
J. Racskó ◽  
J. Nagy ◽  
Z. Soltész ◽  
M. Soltész ◽  
P. T. Nagy ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Dry Matter ◽  
Shape Index ◽  
Matter Content ◽  
Nitrogen Supply ◽  
Specific Yield ◽  
Dry Matter Content ◽  
Canopy Density ◽  
Apple Cultivars

The aim of the present study was to determine the effect of nitrogen supply on yield and fruit quality of apple cultivars and to explore the relationships between canopy density and the different fruit quality parameters. The experiments were carried out at Kálmánháza, in Eastern Hungary in a private orchard in 2003-2004. The response of four apple cultivars ('Elstar', 'Gala Prince', 'Granny Smith', 'Idared') to different nitrogen dosages was studied. The assessed and calculated indices were: yield, fruit diameter, fruit height, shape index, fruit mass, firmness, dry matter content and colouration. The results indicated that nitrogen fertilization has a significant effect on the yield and fruit quality of apple cultivars. The calculated specific yield values were reduced by the application of nitrogen via the increase in the volume of the canopy. An opposit trend was observed for fruit diameter, fruit height and fruit weight, which increased with increasing nitrogen supply. The reduced shape index caused flattening of fruits. However, the improvement of fruit quality via increasing nitrogen dosage is only virtual, since these dosages increase the fruit size, but firmness, dry matter content and colouration are diminished, which decreases the value of the fruits on the market. The authors also studied the relationships between canopy density responsible for assimilation and light supply of the fruits and the different fruit quality parameters. The closest linear inversely proportional relationship was found in the case of colouration. There was a negative linear relationship between canopy density and firmness or dry matter content. The relationship between canopy density and fruit mass could be described by a quadratic polinomial function.

scholarly journals Apple washers removal of insect pests and contaminants from export apples

2016 ◽  
Vol 69 ◽  
pp. 160-166
Author(s):  
D.J. Rogers ◽  
A.B. Woolf ◽  
R.M. McDonald ◽  
L.M. Cole ◽  
S. McLeod ◽  
...  
Keyword(s):  
Pest Management ◽  
Fruit Quality ◽  
Systems Approach ◽  
Insect Pests ◽  
Hydrated Lime ◽  
Management Systems ◽  
Export Markets ◽  
Market Requirements ◽  
Apple Cultivars ◽  
Pest Management Systems

Export markets require highquality fruit free from insects and mites of quarantine significance and with minimal or no agrichemical residues This presents a challenge for New Zealands pipfruit sector when developing novel pest management systems to meet these market requirements Brushbed apple washers are an important component of a systems approach to remove insects and mites in packhouses before fruit are exported A new apple washer using multinozzle rotors significantly reduced the incidence of insects and mites on apples Weathered residues of kaolin and hydrated lime were similarly reduced by this apple washer Assessment of fruit quality after apple washing and cool storage did not identify any commercially significant quality issues on the three apple cultivars examined Apple washer design to optimise pest removal from all locations on the fruit is discussed

scholarly journals Allelic Diversity in Apple Germplasm for Fruit Quality and Scab Resistance Using SSR Markers

2019 ◽  
pp. 1-8
Author(s):  
Atifa Rasool ◽  
K. M. Bhat ◽  
H. U. Rehman ◽  
M. A. Mir ◽  
Shafia Zaffar ◽  
...  
Keyword(s):  
Ssr Markers ◽  
Fruit Quality ◽  
Allelic Diversity ◽  
Plant Biotechnology ◽  
Scab Resistance ◽  
Vf Gene ◽  
Apple Cultivars ◽  
Resistant Genotypes

The present investigation entitled “Allelic diversity in apple germplasm for fruit quality and scab resistance using SSR markers” was conducted in division of plant biotechnology, SKUAST-K, Shalimar during the year 2018. In the present study, four SSR markers namely Md-ACS-1, Md-ACO-1, ALO-7 and AM-19 were used for screening of 40 apple cultivars presently under cultivation in SKUAST-K for quality and scab resistance. The results revealed that out of 40 cultivars evaluated, 3 were found homozygous (ACS-1-2/2), 17 were heterozygous (ACS-1-1/2) and 10 were homozygous (ACS-1-1/1), while as no amplification of ACS-1 was found for 10 cultivars. Similarly, for Md-ACO-1, 3 cultivars were found homozygous, 35 as heterozygous and 2 did not show any amplification. As far as presence of Vf gene conferring resistance against scab disease, ALO-7 amplified at 820bp and 570bp alleles, 570 bp fragment was observed in resistant genotypes and was absent in susceptible genotypes, while the 820 amplicon was observed in both resistant and susceptible genotypes. The markers AM19 led to the amplification of 520 bp fragment in few cultivars.

scholarly journals Response of Several Apple Cultivars to Methyl Bromide Fumigation

1998 ◽  
Vol 8 (1) ◽  
pp. 64-68 ◽  
Author(s):  
S.R. Drake ◽  
H.R. Moffitt
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Methyl Bromide ◽  
Controlled Atmosphere ◽  
Quality Loss ◽  
Internal Damage ◽  
Apple Cultivars

`Fuji', `Gala' and `Jonagold' apples (Malus×domestica Borkh.) from either regular-atmosphere (RA) or controlled-atmosphere (CA) storage can be fumigated with methyl bromide (MeBr) with minimal effects on fruit quality. Some quality loss, particularly in internal color, was possible at 48 and 56 g·m−3 MeBr doses for `Fuji', `Gala', and `Jonagold' apples from CA storage. `Braeburn' apples from either RA or CA storage were not good candidates for MeBr fumigation, particularly at 10 °C. Observed internal damage indicated that `Braeburn' apples from RA or CA cannot be fumigated with MeBr. Apples with watercore displayed increased internal breakdown after fumigation with MeBr. Regardless of cultivar, only apples of superior quality could tolerate the stress of MeBr fumigation.

scholarly journals Fruit Pigmentation of Four Green Apple Cultivars Responds to Urea Sprays but not to Nitrogen Fertilization

HortScience ◽  
1996 ◽  
Vol 31 (6) ◽  
pp. 992-993 ◽  
Author(s):  
M. Meheriuk ◽  
D.-L. McKenzie ◽  
G.H. Neilsen ◽  
J.W. Hall
Keyword(s):  
Fruit Quality ◽  
Malus Domestica ◽  
Nitrogen Fertilization ◽  
Factorial Experiment ◽  
Apple Cultivars ◽  
Foliar Urea

Four green apple (Malus domestica Borkh.) cultivars, `Granny Smith', `Mutsu', `Newtown', and `Shamrock', were subjected to a factorial experiment of two rates of nitrogen fertilization and three concentrations of foliar urea sprays for 4 years. The higher rate of N (160 kg N/ha) had no effect on ground color or fruit quality relative to the lower rate of 80 kg N/ha. Urea sprays enhanced green pigmentation in `Granny Smith' and `Newtown' at harvest and retarded yellowing of fruit in all cultivars during air storage at 0C. Response was similar for urea at 0.5% and 1%, and urea sprays did not adversely affect quality. Urea sprays increased fruit N by 23% and 47% for the 0.5% and 1% concentrations, respectively.

Sign in / Sign up

Export Citation Format

Share Document