Production of total and stainable pollen grains inOlea europaeaL

Abstract

The production of the total and stainable number of pollen grains per flower and per inflorescence of 13 olive cultivars (Olea europaea L.) has been investigated. Grains stainability was evaluated by using the acetic carmine staining method whereas

Effects of environmental factors on pollen production in anemophilous woody species

“…Differences among sampling years as well as higher pollen production from lower stations and southern directions are reported for various species (Fotiou et al 2010;Guardia and Belmonte 2004;Jato et al 2007a;McKone 1990;Moe 1998). Plasticity in pollen production is largely manifested under different environmental factors (LaDeau and Clark 2006;Rogers et al 2006;Wan et al 2002;Wayne et al 2002;Ziska and Caulfield 2000) and has been reported for herbaceous and woody species from different climatic zones: for Alnus incana (Moe 1998), Betula alba (Jato et al 2007a), Cedrus deodara (Khanduri and Sharma 2002a), Chionochloa pallens (McKone 1990), O. europaea (Ferrara et al 2007), Parietaria judaica (Fotiou et al 2010;Guardia and Belmonte 2004), Pinus roxburghii (Khanduri and Sharma Corylus avellana 900 m, S 190.2 (±8.0) 5.6 9 10 3 (±1.2 9 10 3 ) 1.1 9 10 6 (±0.1 9 10 6 ) 5.4 9 10 2 (±1.2 9 10 2 ) 0.3 9 10 1 (±0.1 9 10 1 ) 3.2 9 10 6 (±0.8 9 10 6 ) 900 m, N 219.1 (±7.0) 2.7 9 10 3 (±0.5 9 10 3 ) 5.7 9 10 5 (±0.6 9 10 5 ) 1.2 9 10 3 (±0.2 9 10 3 ) 0.5 9 10 1 (±0.1 9 10 1 ) 3.1 9 10 6 (±0.8 9 10 6 ) Cupressus sempervirens var. horizontalis 90 m, plateau 19.9 (±0.3) 1.9 9 10 4 (±0.1 9 10 4 ) 3.8 9 10 5 (±0.2 9 10 5 ) 2.1 9 10 5 (±0.2 9 10 5 ) 1.0 9 10 4 (±0.1 9 10 4 ) 4.0 9 10 9 (±0.5 9 10 9 ) 450 m, plateau 16.3 (±0.3) 2.1 9 10 4 (±0.3 9 10 4 ) 3.3 9 10 5 (±0.3 9 10 5 ) 9.2 9 10 4 (±0.9 9 10 4 ) 5.5 9 10 3 (±0.5 9 10 3 ) 2.0 9 10 9 (±0.3 9 10 9 ) 450 m, S 17.5 (±0.3) 1.8 9 10 4 (±0.2 9 10 4 ) 2.9 9 10 5 (±0.2 9 10 5 ) 1.2 9 10 5 (±0.1 9 10 5 ) 7.1 9 10 3 (±0.3 9 10 3 ) 2.2 9 10 9 (±0.3 9 10 9 ) 450 m, N 17.0 (±0.3) 2.0 9 10 4 (±0.2 9 10 4 ) 3.1 9 10 5 (±0.2 9 10 5 ) 7.4 9 10 4 (±1.2 9 10 4 ) 4.3 9 10 3 (±0.6 9 10 3 ) 1.8 9 10 9 (±0.3 9 10 9 ) Cupressus sempervirens var.…”

“…There are estimates of pollen production for many species, primarily herbaceous; for woody plants, there exists information for representatives of the genera Alnus (Moe 1998), Betula (Jato et al 2007a), Cedrus (Khanduri and Sharma 2009), Cupressus (Hidalgo et al 1999), Olea (Cuevas and Polito 2004;Ferrara et al 2007;Tormo Molina et al 1996), Pinus (Khanduri and Sharma 2002b;Ladeau and Clark 2006), Platanus (Tormo Molina et al 1996), Quercus (Gomez-Casero et al 2004;Jato et al 2007b), Taxus (Allison 1990), and for several other species collectively studied (Mondal and Mandal 1998;Subba Reddi and Reddi 1986;Tormo Molina et al 1996).…”

Viability and germinability in long term storage of Corylus avellana pollen

“…This phenomenon can be attributed to different causes, as referred in literature also for other cultivated species: unfavorable time of pollen harvesting, genotype, "on" or "off" year for the yield (i.e. olive), type of twigs, environmental stress (Ferrara et al, 2007;Asma, 2008;Calic et al, 2013;Mazzeo et al, 2014;Gallotta et al, 2014;Soares et al, 2015). Moreover, the analyses revealed a combined effect of cultivar and temperature storage on pollen viability.…”

The Flowering and Pollination Study on Olive Variety Arbequina Grown in Montenegro Conditions

“…However, this advantage is reduced in Arbequina in the area of Ulcinj due to higher number of imperfect flowers which was about 18% higher than in the area of Podgorica. Inflorescence length, number of flowers and number of imperfect flowers in Arbequina variety is slightly above the value characteristic for autochthonous variety Zutica (Lazovic, 2000;Lazovic and Adakalic, 2012), and is well above the value for the variety Leccino in Podgorica (unpublished data), or data for the variety Arbequina and Leccino in the area of Puglia, Italy (Ferrara et al, 2007). This indicates that the productive potential of Arbequina varieties is satisfactory for good yields, to which contributes the relatively low level of imperfect flowers.…”

“…Number of flowers in inflorescence was in average 17.80, and slightly, but not significantly higher (about 4%) in the area of Ulcinj. Number of flowers in Arbequina variety is much higher than in the domestic variety Zutica (Lazovic, 2000), as well as in Spanish variety Cornicabra (Rojo et al, 2015) and some other Spanish and Italian varieties (Ferrara et al, 2007;Aguilera and Ruiz, 2012), including Arbequina (13.4 flower/inflorescence) in conditions of Puglia, Italy (Ferrara et al, 2007). This implies a greater capacity for fruit set in Ulcinj.…”