Sexual compatibility and floral biology of some olive cultivars

Abstract

Pollen tube observation was used to assess the self-and cross-incompatibility of the olive (Olea europaea L.) cultivars 'Frantoio', 'Koroneiki' and 'Kalamata'. The pistils were harvested 1 week after hand pollination and stained with 0.1% aniline blue. The styles and ovules were separated, mounted in 80% glycerol and observed under a fluorescence microscope. All the cultivars studied were self-incompatible. 'Frantoio' (as a host) was incompatible with 'Koroneiki' and 'Barnea' but partially compatible with 'Mission'. 'Koroneiki' (as a host) was incompatible with 'Barnea' but partially compatible with 'Frantoio' and 'Mission'. 'Kalamata' (as a host) was compatible with 'Barnea', incompatible with 'Mission' and 'Koroneiki' in 2004, but partially compatible with them in 2005. The effects of shoot orientation and inflorescence location on inflorescence characteristics were also studied. For each cultivar, inflorescence characteristics in three sections of shoots (top, middle and base) and four sides of the three selected trees (north, south, east and west) were recorded. The statistical analysis showed that basal inflorescences were shorter and with fewer flowers but with the same percentage of perfect flowers. Shoot orientation did not have any influence on these characteristics in any of the cultivars.

Reply to Saumitou‐Laprade et al. (2017) “Controlling for genetic identity of varieties, pollen contamination and stigma receptivity is essential to characterize the self‐incompatibility system of Olea europaea L.”. Eva:https://doi.org/10.1111/eva.12498

“…More recently, Seifi et al. (), Seifi, Guerin, Kaiser, and Sedgley () and Vuletin Selak, Cuevas, Goreta Ban, and Perica () examined crosses between other varieties and concluded that observations of pollen tube progression are easy, but whether one or two pollen tubes reach one of the ovules is not so easy to determine in practice. Thus, the method remains delicate to routinely ascertain whether fertilization has occurred, and the observation of fertilization is a key step to establishing compatibility or incompatibility.…”

“…(, ), Seifi et al. (), and Spinardi and Bassi (), paper bags were used. The different materials of which bags are made are important because of their possible permeability to pollen grains.…”

“…(). The aim of this study was to examine more thoroughly the validity of the previous studies on olive intercompatibility and self‐compatibility (Al‐Kasasbeh, Atteyeh, & Qrunfleh, ; Androulakis & Loupassaki, ; Ateyyeh, Stosser, & Qrunfleh, ; Bradley, Griggs, & Hartmann, ; Cuevas & Polito, ; Cuevas et al., ; Dimassi, Thermos, & Balatsos, ; Eassa, El‐Tweel, & Gorda, ; El‐Hady, Haggag, Abdel‐Migeed, & Desouky, ; Farinelli, Boco, & Tombesi, ; Farinelli, Hassani, & Tombesi, ; Fernandez‐Escobar & Gomez–Valledor, ; Griggs, Hartmann, Bradley, Iwakiri, & Whisler, ; Iannotta, Briccoli Bati, Perri, & Tocci, ; Koubouris, Breton, Metzidakis, & Vasilakakis, ; Lavee & Datt, ; Morettini, Bini, & Bellini, ; Moutier, ; Moutier, Garcia, Féral, & Salles, ; Seifi, Guerina, Kaiser, & Sedgley, ; Sharma, Thakur, & Sharm, ; Spinardi & Bassi, ; Taslimpour, Bonyampour, & Rahemi, ; Tombesi, ; Tombesi, Cartechini, & Preziosi, ; Vuletin Selak, Perica, Goreta Ban, Radunic, & Poljak, ), and to analyze the techniques and data used by (Saumitou‐Laprade, Vernet, Vekemans, Billiard et al. (); Saumitou‐Laprade, Vernet, Vekemans, Castric et al.…”

Flowering, Fruiting of Two Table Olive Cultivars “Olea europaea L.” Grown in Southern Egypt

“…Different letter indicates significant difference within a row at P ≤ 0.05. Table 4 show thatinflorescence length and flower number varied from shoot to shoot, tree to tree, cultivar to cultivar and from year to year as early reports (Lavee et al, 1996, Lavee et al, 2002and Seifi et al, 2011. Panicle length of' Toffahi 'and 'Aggizi'cvs.…”

Position and Density of Pistillate Inflorescences of Some Hazelnut Cultivars Grown in Iran

“…Thus, estimation of flower density and subsequent fruit set is important in assessment of a cultivar's performance (Socias i Company, Felipe, Aparisi, García, & Dicenta, 1998). Seifi, Guerin, Kaiser and Sedgley (2011) reported that in olive (Olea europaea L.) cultivars, the section of shoot (upper, middle, and basal) affected the inflorescence length and the number of flowers per inflorescence, but not the percent of perfect flowers present. They also found that shoot orientation (north, south, east, and west) did not have any influence on these characteristics in all studied cultivars.…”