Evaluation of the effect of open-, self- and cross pollinations on fruit set in Domat, Gemlik and Sarı Ulak olive cultivars

Gencer, Cansu Dölek; Özkaya, Mücahit Taha; Eti, Sinan; Karabıyık, Şenay

doi:10.1016/j.scienta.2022.111780

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Fertility is much higher than in some other crops (e.g. 1% of flowers in avocado as shown by Alcaraz & Hormaza, 2021; and 5 to 6% of flowers in olive as shown by Dölek Gencer et al, 2023).…”

Section: Description Of the Flowers And Fruitmentioning

confidence: 81%

Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions

Menzel¹

2023

The Journal of Horticultural Science and Biotechnology

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Modern strawberry (Fragaria ×ananassa Duch.) cultivars are hermaphrodite and have fertile flowers, with the anthers releasing viable pollen. Cultivars are self-compatible and do not require cross-pollination. Studies supporting managed or wild insects are based on a few reports and there are problems with the methods used to assess pollination. This review examined the role of pollination in strawberry. The mean (± s.d. or standard deviation) pollinator dependence (PD) for yield (self-pollination versus open-or insect-assisted pollination) was 0.36 ± 0.26 (P < 0.001, N = 52 studies). The yields of plants exposed to supplementary insects were higher than those exposed to pollinators under natural open conditions, with a calculated pollen limitation (PL) of 0.20 ± 0.17 (P < 0.001, N = 20 studies). Fields close to seminatural habitats, wildflowers, grass or hedges can have more pollinators and a greater diversity of pollinators than fields further away. However, a greater abundance of pollinators does not always lead to higher fruit set. Yield is dependent on insect pollinators (moderate pollinator dependence) and is limited by the availability of pollen under natural open conditions (moderate pollen limitation).

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Section: Description Of the Flowers And Fruitmentioning

confidence: 81%

Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions

Menzel¹

2023

The Journal of Horticultural Science and Biotechnology

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“…An elevated pollen production capacity of olive cultivars is crucial to guarantee an optimum fruit set, especially in new olive-growing areas with no airborne olive pollen from surrounding orchards ( Reale et al , 2006 ; El-Soda et al , 2017 ). In fact, even in traditional olive-growing areas, the use of several cultivars as pollen donors has been related to a fruit set increase ( El-Soda et al , 2017 ; Rallo et al , 2018 ; Gencer et al, 2023 ). Despite these facts, there have been few studies characterizing the pollen production capacity of olive cultivars and its possible variability over years ( Tous et al, 2004 ; Mazzeo et al , 2014 ; Rojo et al , 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Pollen production in olive cultivars and its interannual variability

Rojas-Gómez,

Moral,

López-Orozco

et al. 2023

Annals of Botany

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Background and Aims Olive (Olea europaea subsp. europaea var. europaea) is the most extensively cultivated fruit crop worldwide. It is considered a wind-pollinated and strictly outcrossing crop. Thus, elevated pollen production is crucial to guarantee optimum fruit set and yield. Despite these facts, the variability of pollen production within the cultivated olive has been scarcely studied. This study is aimed to characterize this feature by analysing a representative set of worldwide olive cultivars. Methods We evaluated the average pollen grains per anther in 57 principal cultivars over three consecutive years. We applied a standard generalized linear model (GLM) approach to study the influence of cultivar, year and previous year fruit load on the amount of pollen per anther. Additionally, the K-means method was used for cluster analysis to group cultivars based on their pollen production capacity. Key results Pollen production per anther was highly variable among olive cultivars. The cultivar significantly accounted for 51.3% of the variance in pollen production and the year for 0.3%. The interaction between both factors explained 8.4% of the variance, indicating that not all cultivars were equally stable in producing pollen across the years. The previous year fruit load and its interaction with the year were significant, but barely accounted for 1.5% of the variance. Olive cultivars were classified into four clusters according to their capacity to produce pollen. Interestingly, the fourth cluster was composed of male-sterile cultivars, which presumably share this character by inheritance. Conclusions Pollen production per anther varied extensively within the cultivated olive. This variation was mainly driven by the cultivar and its interaction with the year. The differential capacity of olive cultivars to produce pollen should be considered not only for designing new orchards but also gardens where this species is used as ornamental.

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Evaluation of the effect of open-, self- and cross pollinations on fruit set in Domat, Gemlik and Sarı Ulak olive cultivars

Cited by 2 publications

References 16 publications

Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions

Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions

Pollen production in olive cultivars and its interannual variability

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