Search results for " Prunus"

Development of “universal” gene-specific markers from Malus spp. cDNA sequences, their mapping and use in synteny studies within Rosaceae

2009

The Rosaceae contains many economically valuable crop genera, including Malus (apple), Fragaria (strawberry), and Prunus (stone fruit). There has been increasing interest in the development of linkage maps for these species, with a view to marker-assisted selection to assist breeding programs and, recently, in the development of transferable markers to permit syntenic comparisons of maps of different rosaceous genera. In this investigation, a set of Malus cDNA sequences were downloaded from the European Molecular Biology Laboratory database. The sequences were aligned with homologous full-length Arabidopsis genomic DNA sequences to identify putative intron–exon junctions and conserved flank…

Analysis of S-allele genetic diversity in Sicilian almond germplasm comparing different molecular methods

2015

Italian almond germplasm is characterized by a wide diversity in several growing areas among which Sicily is one of the most important. Analysis with consensus and specific primers and DNA sequencing was performed to investigate S-RNase genetic diversity and to elucidate the homology rate within a genetic pool of 27 Italian accessions. Interestingly, some of the self-compatible cultivars did not show the presence of Sf allele. Amplicons from consensus and allele-specific PCR primers revealed a high level of variability. Sequencing of all the S-RNase amplicons derived from consensus primers allowed the identification of two new S-RNase alleles (S51 and S52). Surprisingly, despite the AA repl…

Mi.P.A.F. targeted project for evaluation of European and Japanese plum rootstocks in Italy: Results of six years of observations

2007

The Mi.P.A.F. (Italian Ministry of Agriculture) targeted project "National Lists of Recommended Rootstocks and Cultivars", coordinated by Prof. F. Loreti, University of Pisa, aims at evaluating the performance of fruit rootstocks introduced into the Italian nursery market. As part of this project, trials were established to compare some of the most interesting rootstocks for European and Japanese plum in 9 different locations in Italy. The rootstocks tested were: 'Citation-Zaipime', 'GF 31', 'Marianna GF 8/1', 'Ishtara-Ferciana', 'Jaspi-Fereley', 'Julior-Ferdor', 'Myrobalan 29C', 'Myrobalan B', 'MrS 2/5' and 'Myrocal'. In 1995, nine orchards were planted at 5 × 5 m spacing; in each orchard,…

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

2012

In this study pollen grains of 13 cultivars and 3 rootstocks belonging to 5 species (<em>P. armeniaca</em>, <em>P. domestica</em>, <em>P. dulcis</em>, <em>P. persica</em>, <em>P. avium</em>) of the genus <em>Prunus </em>collected from North-East Sicily were examined for the micromorphological characterization through the scanning electron microscopy (SEM). The length of polar axis (<em>P</em>) and the equatorial diameter (<em>E</em>) of grain, <em>P/E </em>ratio, the length of colpi (<em>C</em>), diameter of perforations (<em>DP</em>) and the number of perforat…

Comportamento agronomico di quattro nuovi portinnesti ibridi pesco x mandorlo in un impianto ad alta densità in Sicilia

2009

The present study was aimed to evaluate the agronomic behavior of different rootstocks, recently licensed by the Dipartimento di Coltura e Difesa delle Specie Legnose of the University of Pisa, and tested in a high density planting system (2220 trees/ha). Trials were carried out in an experimental orchard established by the Dipartimento di Colture Arboree of the University of Palermo and located in Sicily (Sciacca – Agrigento – 150 m a.s.l.). The observations were carried out on clonal rootstocks: I.S. 5/8 (Polluce); I.S. 5/19 (Castore); I.S. 5/23; I.S. 5/29 and GF 677 grafted at dormant bud with the low chill requirement cultivar “Tropic Snow”. The orchard was established in 2004, trees we…

The role of mucilage of Opuntia ficus-indica Mill. on sweet cherry fruit during storage

2022

Sweet cherry (Prunus avium L.) is an important crop from temperate areas and is widespread and much appreciated by the consumers when the pedicel is green. The objective of this work was to evaluate the quality of sweet cherry fruit treated with a mucilage coating, extracted from cladodes of Opuntia ficus-indica L. Mill (OFI). The cultivar ‘Ferrovia’ was harvested at the commercial ripeness stage from an orchard in Puglia (Italy), stored for 14 days at 2°C and RH 92% and to evaluated by the variation of color and other qualitative parameters such as physical-chemical, nutraceutical and sensory analysis. Fruits were transferred at 10°C to postharvest laboratory of University of Palermo after…

Yield and profitability of modified spanish bush and Y-trellis training systems for peach

2015

Peach trees trained to modified Spanish bush (MSB) and Y-trellis (Y) were evaluated and compared in the Mediterranean settings of Southern Italy. The observations included two peach (Rich May and Summer Rich) and two nectarine (Big Bang and Nectaross) cultivars. In the MSB system, trees were spaced at 4.5 x 2.5 m (888 trees/ha), whereas in the Y system, trees were spaced at 5.5 x 2 m (909 trees/ha). Costs at planting, yield per tree, fruit size grade, unit price of sold peaches for each size grade, amount and cost of materials and labor for cultural management, and grower's profit were quantified throughout all six years from planting and at full crop (year 4-6). Fixed costs of the MSB syst…

Rootstock Effect on Stem Water Potential Gradients in cv. 'Armking' Nectarine Trees

2004

The effects of rootstock vigour on scion xylem hydraulic conductivity were studied on potted trees of cv. ‘Armking’ nectarine grafted onto GF677 (vigorous) and MrS 2/5 (low-vigour) rootstocks. Water potential gradients of non-transpiring leaves were measured at three levels of the stem starting at 10 cm above the graft-point. Transpiration rates were estimated by weighing. Two sets of measurements were taken on the same trees, at two different transpiration-rate levels obtained by imposing a different level of evaporative demand. Measurements were taken after allowing transpiration to reach a steady-state (20 minutes after any environmental perturbation). Trees grafted onto the low-vigour r…

QUALITÀ SENSORIALE E IDONEITÀ ALLA CONSERVAZIONE DELLA PESCA CV SETTEMBRINA DI BIVONA

2012

Diurnal irrigation timing affects fruit growth in late-ripening nectarines

2021

Little is known about the best diurnal irrigation timing for maximum fruit growth in stone fruit, despite fruit size being the most important focus for growers to achieve maximum marketable yield. This study investigated the effects of morning and afternoon irrigation on nectarine fruit growth in stage I (cell division) and stage III (cell expansion). In the 2017/18 season, ‘September Bright’ trees were subjected to morning (Iam) and afternoon (Ipm) irrigations. Fruit diameter was monitored continuously (15-min intervals) using fruit gauges and converted into fruit weight, relative growth rate (RGR) and fruit growth efficiency (FGE), with the latter representing RGR per unit of crop water s…