Effects of plant biostimulants on fruit set, growth, yield and fruit quality attributes of ‘Orange rubis®’ apricot (Prunus armeniaca L.) cultivar in two consecutive years

2018 ◽  
Vol 239 ◽  
pp. 26-34 ◽  
Author(s):  
Annalisa Tarantino ◽  
Francesco Lops ◽  
Grazia Disciglio ◽  
Giuseppe Lopriore
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Growth Yield ◽  
Quality Attributes ◽  
Prunus Armeniaca ◽  
Prunus Armeniaca L

Apricot (Prunus armeniaca L.) fruit quality attributes and phytochemicals under different crop load

2011 ◽  
Vol 129 (3) ◽  
pp. 472-478 ◽  
Author(s):  
Peter A. Roussos ◽  
Vlassia Sefferou ◽  
Nikoleta-Kleio Denaxa ◽  
Eleni Tsantili ◽  
Vassilios Stathis
Keyword(s):  
Fruit Quality ◽  
Quality Attributes ◽  
Prunus Armeniaca ◽  
Crop Load ◽  
Prunus Armeniaca L

scholarly journals EARLY SPRING APPLICATION OF AMINOETHOXYVINILGLYCINE (AVG) INCREASES FRUIT SET AND YIELD OF ‘ROCHA’ PEARS

2017 ◽  
Vol 39 (4) ◽  
Author(s):  
MATEUS DA SILVEIRA PASA ◽  
BRUNO CARRA ◽  
CARINA PEREIRA DA SILVA ◽  
MARLISE NARA CIOTTA ◽  
ALBERTO FONTANELLA BRIGHENTI ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Fruit Set ◽  
Block Design ◽  
Quality Attributes ◽  
Fruit Weight ◽  
Early Spring ◽  
Full Bloom ◽  
Growing Seasons ◽  
Randomized Block Design ◽  
Return Bloom

ABSTRACT The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. Ethylene is associated with abscission of flowers and fruitlets. Then, the application of ethylene synthesis inhibitors, such as AVG, is a potential tool to increase fruit set of pears. The objective of this study was to evaluate the effect of AVG, sprayed at different rates and timings, on fruit set, yield and fruit quality of ‘Rocha’ pear. The study was performed in a commercial orchard located in the municipality of São Joaquim, SC, during the growing seasons of 2014/2015 and 2015/2016. Plant material consisted of ‘Rocha’ pear trees grafted on quince rootstock ‘BA29’. AVG was tested at different rates (60 mg L-1 and 80 mg L-1) and timings [full bloom, one week after full bloom (WAFB), and two WAFB), either alone or in combination. The experiment was arranged in a randomized block design, with at least five single-tree replications. The fruit set, number of fruit per tree, yield, estimated yield, fruit weight, return bloom, and fruit quality attributes were assessed. Fruit set and yield were consistently increased by single applications of AVG at 60 and 80 mg L-1 at both one and two weeks after full bloom, without negatively affecting fruit quality attributes and return bloom.

scholarly journals Specific productivity of selected apricot genorypes

2012 ◽  
Vol 29 (No. 4) ◽  
pp. 125-132
Author(s):  
Z. Vachůn
Keyword(s):  
Confidence Intervals ◽  
Cross Section ◽  
Fruit Quality ◽  
Unit Area ◽  
Fruit Weight ◽  
Prunus Armeniaca ◽  
Tree Size ◽  
Specific Productivity ◽  
Moderate Correlation ◽  
Prunus Armeniaca L

Specific productivity and some correlations between growth and productivity were evaluated in a set of 24 apricot (Prunus armeniaca L.) genotypes in 1994&ndash;1999. Even though the planting stock came from the same nursery, was of even age and on the same rootstock, the tree size of genotypes varied from planting to a permanent site. Differences in the tree size of genotypes slightly diminished over the six-year period, likely under the influence of uniform pruning used for all trees. Nevertheless, tree size evaluated from the area of stem cross-section can be considered as a genotype disposition. It is proved by a positive, highly significant correlation (r = 0.84<sup>++</sup>) between the rank genotypes according to the area of stem cross-section in the fourth and eleventh year after planting. Confidence intervals also confirmed significance of differences in specific productivity. In total, specific productivity of twelve genotypes was significantly higher than in the control cultivar Velkopavlovick&aacute;. A negative, significant moderate correlation (r = &ndash;0.40<sup>+</sup>) was calculated between tree size and specific productivity expressed as yield weight per unit area of stem cross-section. Weakly growing genotypes had higher specific productivity. The highest specific productivity was recorded in cultivars Vynoslivyj and Priusadebnyj and in LE-1321 and LE-390 hybrids. Of them, the most interesting for producers and fruit quality was Vynoslivyj with average fruit weight 47 g and harvest ripeness 11 days after Velkopavlovick&aacute;.

The effect of summer shading on flower bud morphogenesis in apricot (Prunus armeniaca L.)

2013 ◽  
Vol 8 (1) ◽  
pp. 54-63 ◽  
Author(s):  
Susanna Bartolini ◽  
Raffaella Viti ◽  
Lucia Andreini
Keyword(s):  
Fruit Set ◽  
Prunus Armeniaca ◽  
Climatic Conditions ◽  
Regular Growth ◽  
Xylem Differentiation ◽  
Flower Bud ◽  
Primary Xylem ◽  
Floral Differentiation ◽  
Prunus Armeniaca L ◽  
Bud Growth

AbstractThe aim of this investigation was to assess whether imposed summer shading treatments in apricot (Prunus armeniaca L.) can affect the main phenological phases related to the floral morphogenesis (floral differentiation, xylogenesis), flower bud growth and quality in terms of bud capacity to set fruit. Experimental trials were carried out on fully-grown trees of ‘San Castrese’ and ‘Stark Early Orange’ cultivars characterized by different biological and agronomical traits to which shadings were imposed in July and August. Histological analysis was carried out from summer onwards in order to determine the evolution of floral bud differentiation, and the acropetal progression of primary xylem differentiation along the flower bud axis. Periodical recordings to evaluate the bud drop, blooming time, flowering and fruit set rates were performed also. These shade treatments determined a temporary shutdown of floral differentiation, slowed xylem progression up to the resumption of flower bud growth and a reduced entity of flowering and fruit set. These events were particularly marked in ‘San Castrese’ cultivar, which is well known for its adaptability to different climatic conditions. These findings suggest that adequate light penetration within the canopy during the summer season could be the determining factor when defining the qualitative traits of flower buds and their regular growth, and ultimately to obtain good and constant crops.

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