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13C Photoassimilate partitioning in sweet cherry (Prunus avium) during early spring Ciencia e Investigación Agraria
Ayala,Marlene; Lang,Gregory A.
Stored reserves are critical for the early spring growth of reproductive and vegetative sinks in sweet cherry (Prunus avium L.). To study the distribution of carbon storage reserves on new, highly productive hybrid rootstocks in sweet cherry, an experiment was established using 5-yr-old cv. 'Regina' on the semi-vigorous rootstock 'Gisela®6' ('GI®6'). Using whole-canopy enclosure chambers, five trees were pulse-labeled three times with high levels of 13CO2 during the fall. At leaf drop, leaves, buds, wood, bark and roots were sampled for gas chromatography-mass spectrometry (GC-MS) analysis. The storage organs with the highest percentages of excess 13C atoms were the roots and the older wood in the trunks, branches and buds. During the spring, newly...
Tipo: Journal article Palavras-chave: Fruit set; 'Gisela®' rootstock; Sink; Spring remobilization stage I; Storage reserves; Transition.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200006
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Distribution and recycling of canopy nitrogen storage reserves in sweet cherry (Prunus avium) fruiting branches following 15N-urea foliar applications after harvest Ciencia e Investigación Agraria
Ayala,Marlene; Bañados,Pilar; Thielemann,Mariana; Toro,Román.
In sweet cherries, accumulated nitrogen (N) stores from the previous fall support early spring growth. To complement the N supply in the soil, Chilean growers use foliar urea applications after harvest. Information on the effectiveness of foliar N applications in sweet cherry is lacking. To study the canopy distribution of N applied as urea foliar sprays, an experiment using a "Bing"/"Gisela®6" ("GI®6") sweet cherry orchard was carried out in 2009/2010 in Chile (35° 09' 53'' S, 71° 20' 43'' W). The objective was to investigate N distribution and recycling in 3-year-old fruiting branches. A total of 120 branches (one per tree) were labeled using 15N-urea. 15N-urea was applied to the whole branch on four separate dates or treatments (TR) after fruit harvest:...
Tipo: Journal article Palavras-chave: Bark; Buds; Canopy; Leaves; N use efficiency; Fruit; Stored N; Spur; Sweet cherry wood.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000100007
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Effects of fruiting spur thinning on fruit quality and vegetative growth of sweet cherry (Prunus avium) Ciencia e Investigación Agraria
Ayala,Marlene; Andrade,María P.
High density sweet cherry (Prunus avium) orchards using highly productive cultivars and dwarfing rootstocks usually require crop load regulation to achieve high quality fruit. Among the strategies used to reduce crop load in highly productive combinations, fruiting spur thinning (FST, spur extinction) before budbreak has been suggested to be an effective way to improve fruit size. Currently, there is little information about the effect of spur thinning on sweet cherry orchards using self-fertile cultivars grafted on vigorous rootstocks. For this reason, the objective of the present study was to evaluate the effects of manual FST on fruit quality and vegetative growth of the cultivar 'Lapins' grafted on the rootstock 'Mazzard F-12/L with 0, 50 and 75% spur...
Tipo: Journal article Palavras-chave: Crop load regulation; Fruit growth; Fruit quality; Leaf area; Leaf to fruit ratio; Prunus avium; Shoot growth; Spur extinction.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300011
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Evolución del daño por insolación de manzanas 'Granny Smith' durante el almacenaje refrigerado Ciencia e Investigación Agraria
Contreras,Carolina; Zoffoli,Juan Pablo; Alcalde,José Antonio; Ayala,Marlene.
El daño por insolación, golpe de sol o sunburn (Figure 1), es uno de los mayores problemas que afectan la calidad a cosecha de diversos cultivos reduciendo su valor comercial. El objetivo del presente trabajo fue estudiar la evolución de la severidad del daño por golpe de sol leve, moderado y severo en manzanas 'Granny Smith' durante la conservación a 0°C. Frutos con estos niveles de daño fueron previamente tratados con 2000 ]AAs l de difenilamina (DPA) o 625 nLL' de 1-methylcyclopropene (1-MCP). Además, igual número de frutos sin aplicación de estos productos se dejaron como control. La fruta se almacenó por 3 y 6 meses a 0°C más 15 d a 20°C. Para cada tiempo de almacenaje se evaluó la incidencia de escaldado y la concentración de tríenos conjugados (CTs)...
Tipo: Journal article Palavras-chave: DPA; Escaldado; Escaldado superficial; Golpe de sol; Malus; Tríenos conjugados; I-metilciclopropeno.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000200004
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Pruning effects on vegetative growth and fruit quality of 'Bing'/'Gisela®5' and 'Bing'/'Gisela®6' sweet cherry trees (Prunus avium) Ciencia e Investigación Agraria
Villasante,Macarena; Godoy,Soledad; Zoffoli,Juan Pablo; Ayala,Marlene.
Annual pruning is one of the most efficient ways to regulate crop load and renew fruiting wood in highly productive sweet cherry (Prunus avium L.) combinations. Although Chilean growers did not previously prune cherry trees of more vigorous combinations, in recent years, the adoption of more dwarfing rootstocks and self-fertile cultivars has led to the inclusion of annual pruning as a practice in modern orchards. At first, this alteration in orchard management practices was not considered by growers, and thus, many of the initially established cherry orchards were not pruned as intensively as they should have been. As a consequence, many trees showed a reduction in fruit quality after 4 or 5 years of being planted, as they became overcropped and,...
Tipo: Journal article Palavras-chave: Crop load regulation; Dwarfing rootstocks; Fruit quality; Gisela®5; Gisela®6; Pitting; Pruning; Sweet cherry; Vegetative growth.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100009
Registros recuperados: 5
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