Search results for "Prunus persica (L.) Batsch"

showing 3 items of 3 documents

Non-destructive determination of ‘Big Bang’ nectarine quality and harvest maturity

2021

In nectarines, potential shelf life and quality at consumption are closely related to the ripeness stage of fruit at harvest. Usually, the harvest is based on color, firmness, sugar and acids content of fruit, although these determinations are carried out through destructive methods and in a limited number of samples. The technique of Vis/Nir spectroscopy is used for the development of a non-destructive index based on the difference of absorbance (IDA) between two wavelengths near the absorption peak of chlorophyll-a, and it allows monitoring of changes in ripeness processes directly in the field. The objective of this paper is to track changes in quality that occur during nectarine ripenes…

Fruit qualityNon-destructive testmedia_common.quotation_subjectIADAgricultural engineeringHorticultureMaturity (finance)Settore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeEthyleneNon destructivePrunus persica L. BatschBig Bang (financial markets)FirmneHarvest dateQuality (business)Mathematicsmedia_commonActa Horticulturae
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ADATTAMENTO ALLA GESTIONE BIOLOGICA DI CULTIVAR DI PESCO ( PRUNUS PERSICA L. BATSCH ) SICILIANE OTTENUTE ATTRAVERSO SELEZIONE MASSALE E INCROCIO.

2011

Settore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeSELEZIONE MASSALE E INCROCIO.CULTIVAR DI PESCO ( PRUNUS PERSICA L. BATSCH)SICILIANEADATTAMENTO ALLA GESTIONE BIOLOGICA
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Canopy Architecture Appraisal by Fractal Dimension of 'Flordastar' Peach Trees Grafted onto Different Rootstocks

2007

The objective of this research was to evaluate the modification of canopy architecture of ''Flordastar'' peach (Prunus persica L. Batsch) grafted onto rootstocks with different vigour, by the use of fractal dimension (D). The hypothesis was that different vigour rootstocks are able to modify the complexity of the branching pattern and that this effect can be assessed by a geometric parameter such as the fractal dimension (D) of the 2D projection of tree branching structure. The observations were carried out in a four-year-old experimental orchard of cv. ''Flordastar'' peach trees grafted onto Ishtara, Barrier, GF677 and MrS 2/5 rootstocks. On digital pictures of leafless, dormant peach tree…

The objective of this research was to evaluate the modification of canopy architecture of ''Flordastar'' peach (Prunus persica L. Batsch) grafted onto rootstocks with different vigour by the use of fractal dimension (D). The hypothesis was that different vigour rootstocks are able to modify the complexity of the branching pattern and that this effect can be assessed by a geometric parameter such as the fractal dimension (D) of the 2D projection of tree branching structure. The observations were carried out in a four-year-old experimental orchard of cv. ''Flordastar'' peach trees grafted onto Ishtara Barrier GF677 and MrS 2/5 rootstocks. On digital pictures of leafless dormant peach trees the tree skeleton was manually depicted by an image analysis software to measure total length and angles of insertion of branches. Bitmaps of the skeleton were then subjected to a specific software (FDCALC) able to calculate D by the "box counting" method. To account for the error introduced by analyzing a three dimensional structure with its 2D projection measurements were done on two images per tree taken from two different viewing angles. Results are shown in relation to tree vigour of the scion/stock combination. Fractal dimension was related to the vigour ranking of the graft combinations tested. In particular vigorous scion/stock combinations showed the highest D.HorticultureCanopy architectureHorticultureRootstockFractal dimensionMathematics
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