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Open Life Sciences

formerly Central European Journal of Biology

Editor-in-Chief: Ratajczak, Mariusz

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Volume 8, Issue 1


Volume 10 (2015)

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

Susanna Bartolini / Raffaella Viti
  • Department of Trees Science, Entomology and Plant Pathology, ‘G. Scaramuzzi’, University of Pisa, 56124, Pisa, Italy
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/ Lucia Andreini
Published Online: 2012-11-21 | DOI: https://doi.org/10.2478/s11535-012-0109-1


The 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.

Keywords: Floral differentiation; Xylem vessels; Bud growth; Bud drop; Fruit set

  • [1] Bernier G., Périlleux C., A physiological overview of the genetics of flowering time control, Plant Biotech., 2005, 3, 3–16 http://dx.doi.org/10.1111/j.1467-7652.2004.00114.xCrossrefGoogle Scholar

  • [2] Tan F.C., Swain S.M., Genetics of flower initiation and development in annual and perennial plants, Physiol. Plant, 2006, 128, 8–17 http://dx.doi.org/10.1111/j.1399-3054.2006.00724.xCrossrefGoogle Scholar

  • [3] Marcelle R., The flowering process and its control, Acta Hort., 1984, 149, 65–69 Google Scholar

  • [4] Wada M., Cao Q., Kotoda N., Soejima J., Masuda T., Apple has two orthologues of FLORICAULA/LEAFY involved in flowering, Plant Mol. Biol., 2002, 49, 567–577 http://dx.doi.org/10.1023/A:1015544207121CrossrefGoogle Scholar

  • [5] Xiloyannis C., Celano G., Dichio B., Nuzzo V., Orchard management, Acta Hort., 1999, 488, 457–464 Google Scholar

  • [6] Lamp B.M., Connell J.H., Duncan R.A., Viveros M., Polito V.S., Almond flower development: floral initiation and organogenesis, J. Am. Soc. Hort. Sci., 2001, 126, 689–696 Google Scholar

  • [7] Neri D., Morini F., Massetani F., Pirazzini P., Pruning: how to manage shoot growth, Acta Hort., 2010, 862, 355–363 Google Scholar

  • [8] Nuzzo V., Biasi R., Dichio B., Montanaro G., Xiloyannis C., Lanzieri A., Influence of different seasonal light availability on flower bud quality in cv Tirinthos (Prunus armeniaca L.), Acta Hort., 1999, 488, 477–482 Google Scholar

  • [9] Legave J.M., Garcia G., Marco F., Some descriptive aspects of drops process of flower buds, or young flowers observed on apricot tree in south of France, Acta Hort., 1982, 121, 75–83 Google Scholar

  • [10] Alburquerque N., Burgos L., Egea J., Influence of flower bud density, flower bud drop and fruit set on apricot productivity, Scientia Hort., 2004, 102, 397–406 http://dx.doi.org/10.1016/j.scienta.2004.05.003CrossrefGoogle Scholar

  • [11] Julian C., Herrero M., Rodrigo J., Flower bud differentiation and development in fruiting and non-fruiting shoots in relation to fruit set in apricot (Prunus armeniaca L.), Trees, 2010, 24, 833–841 http://dx.doi.org/10.1007/s00468-010-0453-6CrossrefGoogle Scholar

  • [12] Esau K., Vascular differentiation in plant, Holt, Rinehart and Winston, New York, 1965 Google Scholar

  • [13] Faust M., Liu D., Line M.J., Stutte G.W., Conversion of bond to free water in endodormant buds of apple is an incremental process, Acta Hort., 1995, 395, 13–118 Google Scholar

  • [14] Bartolini S., Viti R., Guerriero R., Xylem differentiation and microsporogenesis during dormancy of apricot flower buds (Prunus armeniaca L.), Europ. J. Hort. Sci., 2006, 71, 84–90 Google Scholar

  • [15] Bartolini S., Giorgelli F., Boron accumulation and xylem differentiation in apricot flower buds, Acta Hort., 1995, 384, 297–302 Google Scholar

  • [16] Bonhomme M., Peuch M., Ameglio T., Rageau R., Guillot A., Decourteix M., et al., Carbohydrate uptake from xylem vessels and its distribution among stem tissues and buds in walnut (Juglans regia L.), Tree Physiol., 2010, 30, 89–102 http://dx.doi.org/10.1093/treephys/tpp103CrossrefGoogle Scholar

  • [17] Syvertsen J.P., Lloyd J.J., Citrus, In: Scahaffer B., Andersen P.C. (Eds.), Handbook of environmental physiology of fruit crops, subtropical and tropical crops, Vol. II, FL: CRC Press, Boca Raton, 1994 Google Scholar

  • [18] Zhu L.H., Borsboom O., Tromp J., The effect of temperature on flower bud formation in apple including some morphological aspects, Scientia Hort., 1997, 70, 1–8 http://dx.doi.org/10.1016/S0304-4238(97)00018-6CrossrefGoogle Scholar

  • [19] Cohen S., Moreshet S., Le Guillou L., Simon J.C., Cohen M., Response to citrus trees to modified radiation regime in semi-arid conditions, J. Exp. Bot., 1997, 48, 5–44 http://dx.doi.org/10.1093/jxb/48.1.35CrossrefGoogle Scholar

  • [20] Beppu K., Kataoka I., Artificial shading reduces the occurrence of double pistils in ’satohnishiki’ sweet cherry, Scientia Hort., 2000, 83, 241–247 http://dx.doi.org/10.1016/S0304-4238(99)00114-4CrossrefGoogle Scholar

  • [21] Barradas V.L., Nicolas E., Torrecillas A., Alarcon J.J., Transpiration and canopy conductance in young apricot (Prunus armenica L.) trees subjected to different PAR levels and water stress, Agric. Water Manag., 2005, 77, 323–333 http://dx.doi.org/10.1016/j.agwat.2004.09.035CrossrefGoogle Scholar

  • [22] Nicolas E., Torrecillas A., Dell`Amico J., Alarcon J.J., Sap flow, gas exchange, and hydraulic conductance of young apricot trees growing under a shading net and different water supplies, J. of Plant Physiol., 2005, 162, 439–447 http://dx.doi.org/10.1016/j.jplph.2004.05.014CrossrefGoogle Scholar

  • [23] Viti R., Bartolini S., Guerriero R., The influence of sampling from different canopy positions on the evaluation of flower bud anomalies and dormancy in apricot (Prunus armeniaca L.), Fruits, 2003, 58, 117–126 http://dx.doi.org/10.1051/fruits:2002041CrossrefGoogle Scholar

  • [24] Andreini L., Bartolini S., Morphological changes in the apex of Prunus persica L during floral transition and effects of gibberellin on flower bud differentiation, Jour. of Appl. Hort., 2008, 10, 93–99 Google Scholar

  • [25] Richardson E.A., Seeley S.D., Walker R.D., A model for estimating the completion of rest for Red Haven and Elberta peach, Hort. Sci., 1974, 9, 331–332 Google Scholar

  • [26] Morandi B., Zibordi M., Losciale P., Manfrini L., Pierpaoli E., Corelli Grappadelli L., Shading decreases the growth rate of young apple fruit by reducing their phloem import, Scientia Hort., 2011, 127, 347–352 http://dx.doi.org/10.1016/j.scienta.2010.11.002CrossrefGoogle Scholar

  • [27] Bartolini S., Viti R., Histological studies on flower buds of cultivar “Stark Early Orange”, Acta Hortic., 1999, 488, 335–340 Google Scholar

  • [28] Andreini L., Viti R., Bartolini S., Ruiz D., Egea J., Campoy J.A., The relationship between xylem differentiation and dormancy evolution in apricot flower buds (Prunus armeniaca L.): the influence of environmental conditions in two Mediterranean areas, Trees, 2012, 26, 919–928 http://dx.doi.org/10.1007/s00468-011-0668-1CrossrefGoogle Scholar

  • [29] Schultz H.R., Matthews M.A., Xylem development and hydraulic conductance in sun and shade shoots of grapevine (Vitis vinifera L.): evidence that low light uncouples water transport capacity from leaf area, Planta, 1993, 190, 393–406 http://dx.doi.org/10.1007/BF00196969CrossrefGoogle Scholar

  • [30] Fukuda H., Xylogenesis: initiation, progression and cell death, Ann. Rev. Plant Physiol. and Plant Mol. Biol., 1996, 47, 299–325 http://dx.doi.org/10.1146/annurev.arplant.47.1.299CrossrefGoogle Scholar

  • [31] Aloni R., Differentiation of vascular tissue, Ann. Rev. Plant Physiol., 1987, 38, 179–204 http://dx.doi.org/10.1146/annurev.pp.38.060187.001143CrossrefGoogle Scholar

  • [32] Sachs T., Integrating cellular and organismic aspect of vascular differentiation, Plant Cell Physiol., 2000, 41, 649–656 http://dx.doi.org/10.1093/pcp/41.6.649CrossrefGoogle Scholar

  • [33] Bartolini S., Viti R., Zanol G.C., The involvement of glutathione in flower bud dormancy overcoming in apricot (Prunus armeniaca L.), In: Pandalai S.G. (Ed.), Recent Research Development Agronomy & Horticulturae, Vol. 1, Research Signpost Publisher, 2004 Google Scholar

  • [34] Viti R., Andreini L., Ruiz D., Egea J., Bartolini S., Iacona C., et al., Effect of climatic conditions on the overcoming of dormancy in apricot flower buds in two Mediterranean areas: Murcia (Spain) and Tuscany (Italy), Scientia Hort., 2010, 124, 217–224 http://dx.doi.org/10.1016/j.scienta.2010.01.001CrossrefGoogle Scholar

  • [35] Lugassi-Ben-Hamo M., Kitron M., Bustan A., Zaccai M., Effect of shade regime on flore development, yield and quality in lisianthus, Scientia Hort., 2010, 124, 248–253 http://dx.doi.org/10.1016/j.scienta.2009.12.030CrossrefGoogle Scholar

  • [36] Vitagliano C., Bartolini S., Catania M., Summer pruning increases sugar and starch content of peach flower buds, fruit retention and size, Acta Hortic., 2001, 565, 93–101 Google Scholar

  • [37] McArtney S.J., Ferree D.C., Shading effects on dry matter partitioning, remobilization of stored reserves and early season vegetative development of grapevines in the year after treatment, J. Am. Soc. Hort. Sci., 1999, 124, 591–597 Google Scholar

  • [38] Viti R., Bartolini S., Guerriero R., Apricot floral biology: the evolution of dormancy and the appearance of bud anomalies in several Italian genotypes, Adv. in Hort. Sci., 2006, 4, 267–274 Google Scholar

About the article

Published Online: 2012-11-21

Published in Print: 2013-01-01

Citation Information: Open Life Sciences, Volume 8, Issue 1, Pages 54–63, ISSN (Online) 2391-5412, DOI: https://doi.org/10.2478/s11535-012-0109-1.

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© 2013 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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