Airborne Pollen of Jordan

Al‐Eisawi, Dawud; Dajani, Basim

doi:10.1080/00173138809428929

Cited by 31 publications

(50 citation statements)

References 2 publications

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“…The diploid chromosome number 2n = 20 was counted for Pimpinella corymbosa. This result confirms the previous report by Al-Eisawi (1989) from Jordan. Also the haploid chromosome number n = 10 was found by Pimenov & al.…”

Section: Reportssupporting

confidence: 93%

Mediterranean chromosome number reports – 22

2012

Fl. Medit.

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Section: Reportssupporting

confidence: 93%

Mediterranean chromosome number reports – 22

2012

Fl. Medit.

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“…They observed three peaks: April for tree pollen, May for grasses and August for weeds. Three pollen peaks were also recorded by Al-Eisawi & Dajani (1988) in Jordan: March for tree pollen, May for grasses and August-September for weeds. The pollen calendar for Kuwait is basically different from those of Jordan and western Iran, apparently due to the absence of native arboreal species.…”

Section: Annual Variationmentioning

confidence: 99%

Airborne Pollen of Kuwait City, Kuwait, 1975–1987

Halwagy¹

1994

Grana

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“…They form dense inflorescences and show numerous flowers per flower head, abundant stamens per flower, and functionally male flowers (Correia et al, 2014;Giuliani et al, 2016). Pollen diameter is 30-70 µm in most Australian acacias (Guinet, 1981), and even if rarely taken into account, acacia pollen was recorded in aerobiological surveys of South America, Jordan, and Italy (Sanchez-Medina and Fernandez, 1966;Al-Eisawi and Dajani, 1988;Romano, 1988;Hurtado and Alson, 1996) confirming that wind is able to conveniently handle the polyad (composite pollen grains). Moreover, some environmental conditions are supposed to favour anemophily, such as low species diversity and higher proportions of conspecifics (Ackerman, 2000).…”

Section: Introductionmentioning

confidence: 95%

Why so many flowers? A preliminary assessment of mixed pollination strategy enhancing sexual reproduction of the invasive <i>Acacia longifolia</i> in Portugal

Giovanetti¹,

Ramos²,

Máguas³

2018

Web Ecol.

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Abstract. Acacia longifolia, a native legume from Australia, has been introduced in many European countries and elsewhere, thus becoming one of the most important global invasive species. In Europe, its flowering occurs in a period unsuitable for insect activity: nonetheless it is considered entomophilous. Floral traits of this species are puzzling: brightly coloured and scented as liked by insects, but with abundant staminate small-sized flowers and relatively small pollen grains, as it is common in anemophilous species. Invasion processes are especially favoured when reshaping local ecological networks, thus the interest in understanding pollination syndromes associated with invasive plant species that may facilitate invasiveness. Moreover, a striking difference exists between its massive flowering and relatively poor seed set. We introduced a novel approach: first, we consider the possibility that a part of the pollination success is carried on by wind and, second, we weighted the ethological perspective of the main pollinator. During the flowering season of A. longifolia (February-April 2016), we carried on exclusion experiments to detect the relative contribution of insects and wind. While the exclusion experiments corroborated the need for pollen vectors, we actually recorded a low abundance of insects. The honeybee, known pollinator of acacias, was relatively rare and not always productive in terms of successful visits. While wind contributed to seed set, focal observations confirmed that honeybees transfer pollen when visiting both the inflorescences to collect pollen and the extrafloral nectaries to collect nectar. The mixed pollination strategy of A. longifolia may then be the basis of its success in invading Portugal's windy coasts.

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Airborne Pollen of Jordan

Cited by 31 publications

References 2 publications

Mediterranean chromosome number reports – 22

Mediterranean chromosome number reports – 22

Airborne Pollen of Kuwait City, Kuwait, 1975–1987

Why so many flowers? A preliminary assessment of mixed pollination strategy enhancing sexual reproduction of the invasive <i>Acacia longifolia</i> in Portugal

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Airborne Pollen of Jordan

Cited by 31 publications

References 2 publications

Mediterranean chromosome number reports – 22

Mediterranean chromosome number reports – 22

Airborne Pollen of Kuwait City, Kuwait, 1975–1987

Why so many flowers? A preliminary assessment of mixed pollination strategy enhancing sexual reproduction of the invasive &lt;i&gt;Acacia longifolia&lt;/i&gt; in Portugal

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Why so many flowers? A preliminary assessment of mixed pollination strategy enhancing sexual reproduction of the invasive <i>Acacia longifolia</i> in Portugal