Pollen wall stratification trends in<i>Ulex</i>(Genisteae, papilionoideae: Leguminosae) in the Iberian Peninsula

Cubas, Paloma; Pardo, Carmen

doi:10.1080/00173139209432028

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…Scanning electron microscopy analysis of bee pollen samples, presented in Figure 1 and Table 2, showed that the botanical origin of each bee pollen sample according to its predominant pollen grains was as follows: the botanical origin of bee pollen sample from LARACHE was Coriandrum sativum (Apiaceae) (70%), the botanical origin of bee pollen sample from KHENICHAT was Ulex europaeus (Fabaceae) (73%), the botanical origin of bee pollen sample from HED KOURT was Scorzonera cana (Asteraceae) (77%), the botanical origin of bee pollen sample from KENITRA was Trifolium pretense (Fabaceae) (76%), the botanical origin of bee pollen sample from FEZ was Ulex europaeus (Fabaceae) (64%), the botanical origin of bee pollen sample from SEFROU was Reseda luteola (Resedaceae) (60%), the botanical origin of bee pollen sample from ARFOUD was Spiraea salicifolia (Rosaceae) (68%), and the botanical origin of bee pollen sample from TAZA was Lamium galeobdolon (Lamiaceae) (59%). e bee pollen identification was carried out by comparing the morphology, sizes, and exine ornamentations of bee pollen studied to that described elsewhere [20][21][22][23][24][25][26]. Louveaux et al reported that when the percentage of pollen grains is >45% of total, the sample is classified as monofloral [9].…”

Section: Botanical Identification Of Bee Pollen By Scanning Electronmentioning

confidence: 99%

Moroccan Monofloral Bee Pollen: Botanical Origin, Physicochemical Characterization, and Antioxidant Activities

Menyiy

Bakour

Lyoussi

2021

Journal of Food Quality

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In this study, eight monofloral bee pollen samples were collected from different apiaries in Morocco. Botanical origins of the bee pollen samples were determined by scanning electron microscopy (SEM), and the physicochemical parameters (pH, moisture, ash, and the mineral contents) were determined. Total phenolic, flavones/flavonols contents were evaluated, and the antioxidant potential was assessed using total antioxidant capacity, DPPH, ABTS, and reducing power assays. Data showed that pH, moisture, and ash content values ranged between 4.19 ± 0.17 and 4.82 ± 0.36, 10.7 ± 0.04% and 26.8 ± 0.01%, and 1.81 ± 0.10% and 4.22 ± 0.08%, respectively. Potassium and magnesium were the most abundant minerals in bee pollen samples; heavy metals were not detected except for two samples (P5 and P6) where a very small amount of lead was found. The protein content in these samples varied between 19.86 ± 0.36 mg/100 g and 30.32 ± 0.12 mg/100 g of bee pollen. The phenolic content, flavones/flavonols content, and total antioxidant capacity were 21.87 ± 1.80 mgEAA/g, 2.37 ± 0.16 mgEAA/g, and 6.23 ± 0.21 mgEAA/g, respectively. High scavenging activity of DPPH and ABTS radicals was found in P2 with the lower IC50 of 0.245 ± 0.009 mg/ml and 0.19 ± 0.005 mg/ml, respectively. The lower EC50 was 0.133 ± 0.036 mg/ml found in P1 for the reducing power test. The current study is considered to be the first step to the standardization of Moroccan bee pollen.

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Section: Botanical Identification Of Bee Pollen By Scanning Electronmentioning

confidence: 99%

Moroccan Monofloral Bee Pollen: Botanical Origin, Physicochemical Characterization, and Antioxidant Activities

Menyiy

Bakour

Lyoussi

2021

Journal of Food Quality

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“…Although it has been generally accepted that Genisteae has rather homogeneous pollen ( Ferguson & Skvarla 1981) , several trends of variation in pollen morphology and structure have been found in different genera of Genisteae. For example, in Ulex and Stauracanthus, the pollen size and structure type are related to ploidy level, as well as to¯ower length and seed size ( Cubas & Pardo 1992 . In Genista, differences in structural type are also related to different ploidy levels while changes in chromosome number associated with aneuploidy processes are not re¯ected in variations in pollen wall structure ) .…”

Section: Comparison Of the Pollen Of Cytisus With Other Genisteaementioning

confidence: 99%

Pollen morphology inCytisus(Papilionoideae, Leguminosae) from Morocco and the Iberian Peninsula

Pardo

Tahiri

Cubas

et al. 2000

Grana

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Although it is generally accepted that the tribe Genisteae has rather homogeneous pollen, we have found considerable variation in pollen size and morphology in Cytisus and related genera ( Argyrocytisus and Chamaecytisus) , which match taxonomic groups de® ned on morphological grounds. The results of Principal Component Analysis of pollen characteristics show the following: Cytisus Sect. Alburnoides is well-delimited, with the smallest pollen grains and the simplest pattern in the tectum, fossulate-perforate to perforate; No separation of C. villosus ( Sect. Cytisus) from Sect. Alburnoides is observed; Cytisus Sect. Spartopsis, with the largest pollen grains and reticulate to reticulate-fossulate ornamentation, forms an isolated group; C. fontanesii ( Sect. Heterocytisus) stands apart from other Cytisus species by its homogeneous ornamentation and the perforate instead of psilate-punctate margo. Thus, the pollen data supports its transfer to the separated genus Chronanthos; Pollen ornamentation and morphology also support the separation of Argyrocytisus battandieri and Chamaecytisus mollis from Cytisus.

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“…Other morphological characteristics are also correlated with chromosome number. Cubas & Pardo (1992) show that pollen wall structural types correlate to a high degree with the different ploidy levels found in lilex.…”

Section: Discussionmentioning

confidence: 97%

Correlations between chromosomal and morphological characters in subspecies of Ulex europaeus L. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

Cubas¹,

Pardo²

1997

Botanical Journal of the Linnean Society

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The two subspecies of Ulex mn$mus L. (subsp. eumpms and subsp. latebracteatus) are easily differentiated by the shape and size of their bracteoles, and by their chromosome number. However, in the north-west of the Iberian Peninsula, the areas of both subspecies are not clearly delimited, the shape of the bracteoles is intermediate and the width is close to the diagnostic limit. Thus, allocation of some specimens to either subspecies is diffcult. Recently, a controversy has arisen concerning the intrapopulational uniformity of the chromosome number in U. mmpaezu from west France and north Spain, and the usefulness of ploidy level and chromosome number as clear-cut indicators of the two subspecies. Thus, the merits of recognizing the subspecies as independent are re-analysed here. Our results for north-west Spain show that the chromosome number is uniform and itable within populations and is clearly related to the morphological characters. Correlation and discriminant analyses show that bracteoles and stomata sizes are highly correlated and are good predictors of ploidy level. Furthermore, the results support the maintenance of two subspecies in U. wmpam, which can be delimited by a combination of morphological characters, chromosome number and geographical distribution. 0 1997 The Linnean Society of London

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Pollen wall stratification trends inUlex(Genisteae, papilionoideae: Leguminosae) in the Iberian Peninsula

Cited by 8 publications

References 11 publications

Moroccan Monofloral Bee Pollen: Botanical Origin, Physicochemical Characterization, and Antioxidant Activities

Moroccan Monofloral Bee Pollen: Botanical Origin, Physicochemical Characterization, and Antioxidant Activities

Pollen morphology inCytisus(Papilionoideae, Leguminosae) from Morocco and the Iberian Peninsula

Correlations between chromosomal and morphological characters in subspecies of Ulex europaeus L. (Genisteae, Leguminosae) from the north-west of the Iberian Peninsula

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