Microclimatic-induced fluctuations in the flower and pollen production rate of olive trees (Olea europaeaL.)

Analysis and interpretation of long temporal trends in cumulative temperatures and olive reproductive features using a seasonal trend decomposition procedure

“…One main reason might explain these extreme values in the pollen emission trends. The most favourable microclimatic conditions for both flower and pollen production rates in olive trees are found in years and/or olive growing areas with low temperatures and high precipitation during the months prior to flowering (Aguilera and Ruiz-Valenzuela, 2012). The years with the highest pollen concentrations were those with spring cumulative temperatures values lower or around the average value of the 19-year period.…”

“…Flowering is one of the most critical phases for every fructiferous plant (Barranco et al, 2008). For example, weather conditions prior to flowering, such as low temperatures and high precipitation, can promote the formation of flowers and contribute positively to increased pollen production of the olive tree (Olea europaea L.) (Aguilera and Ruiz-Valenzuela, 2012). In addition, cumulative rainfall during the olive flowering period can influence its length, and also the pollen release levels Oteros et al, 2012).…”

“…This is due to both the notable increase in the cultivation area and the flowering intensity of the olive, which releases large amounts of pollen grains into the atmosphere during spring (Aguilera and Ruiz-Valenzuela, 2012;García-Mozo et al, 2008). The pollen emitted by olive trees is considered one of the main causes of allergic respiratory diseases in the Mediterranean region (D'Amato et al, 2007).…”

Forensic value of pollen from ornamental indoor plants

“…The amount of produced pollen depends on the pollination type and growth form of the plant (Mondal & Mandal 1998;Milne et al 2004) and is often typical for a genus or species (Denisow 2008), and may even vary between cultivars (Denisow et al 2013). Furthermore, it was reported, that (micro-)climatic conditions can alter pollen production (Herlihy & Delph 2009;Jochner et al 2011;Aguilera & Ruiz Valenzuela 2012). The same might happen indoors.…”

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

“…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.…”