Bee pollinators of faba bean (Vicia faba L.) differ in their foraging behaviour and pollination efficiency

Marzinzig, Birgit; Brünjes, Lisa; Biagioni, Siria; Behling, Hermann; Link, Wolfgang; Westphal, Catrin

doi:10.1016/j.agee.2018.05.003

Cited by 82 publications

(91 citation statements)

References 71 publications

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“…However, the cultivar Hedin/2 actually lost yield as a result of pollination treatments in this study, suggesting that the pollination treatments necessary for our experimental design stymied yield production in at least some of the plants. In addition to effects of plant genotype, the benefits of pollination are known to vary with species of pollinator 24,40 perhaps due to the precise timing of pollination, or amount of pollen transferred, but we found no differences in efficacy of hand vs insect pollination in this (e.g. open pollinated vs tripping in field experiment) or previous research 39 .…”

Section: Discussioncontrasting

confidence: 62%

Yield benefits of additional pollination to faba bean vary with cultivar, scale, yield parameter and experimental method

Bishop

Garratt

Breeze

2020

Sci Rep

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The benefits of insect pollination to crop yield are used to justify management decisions across agricultural landscapes but current methods for assessing these benefits may underestimate the importance of context. We quantify how the effects of simulated insect pollination vary between five faba bean cultivars, and to what extent this changes between years, scales, yield parameters, and experimental methods. We do this by measuring responses to standardised hand pollination treatments in controlled experiments in flight cages and in the field. Pollination treatments generally improved yield, but in some cases yield was lower with additional pollination. Pollination dependence varied with cultivar, ranging from 58% (loss in yield mass per plant without pollination) in one cultivar, to a lower yield with pollination in another (−51%). Pollination dependence also varied between flight cage and field experiments (−10 to 37% in the same cultivar and year), year (4 to 33%; same cultivar and yield parameter), and yield parameter (−4 to 46%; same cultivar and year). This variability highlights that to be robust, assessments of pollination benefits need to focus upon marketable crop outputs at a whole-plant or larger scale while including and accounting for the effects of different years, sites, methodologies and cultivars.The contribution of insect pollinators to crop yield has been used to support conservation measures 1 , provide cost-effective agronomic advice 2 , and to support agricultural policies at a national level 3 . Globally, benefits of insect pollination to food production are estimated to be worth $235-577 billion per year 1 . This value is based upon estimates of the "pollinator dependence" of each crop; the proportion of harvestable yield that depends on animal mediated pollination, or how much yield is lost in absence of such pollination.Recent studies have begun to show that the pollinator dependence of a crop is not fixed and that it interacts with other biological factors (soil quality and predation by pests 4-6 ) or agronomic inputs (fertilizer, agrochemicals and water 7-11 ), see review 12 .Pollinator dependence can also vary with crop cultivar, for example in apples 13 and oilseed rape 14 . Understanding pollinator dependence on a per-cultivar basis could enable crop producers to secure production as pollination services become less predictable 15,16 following shifts in pollinator populations through time 17,18 . In the short term, producers in landscapes with low levels of semi-natural habitat and pollination service capacity 19 may benefit from use of low-dependent cultivars, though this needs to be considered alongside other agronomic attributes (e.g. yield potential, disease resistance).Quantifying variation in pollinator dependence between cultivars has rarely been the primary aim of experiments. Without standardised experimentation it is difficult to identify those cultivars with high or low pollination dependence; as above, each study that estimates the yield benefits of pollination does so...

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Section: Discussioncontrasting

confidence: 62%

Yield benefits of additional pollination to faba bean vary with cultivar, scale, yield parameter and experimental method

Bishop

Garratt

Breeze

2020

Sci Rep

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“…The outbreeding habit of faba bean is a second factor; in fact, while the advanced breeding varieties favor inbreeding in search of higher stability, as requested by UPOV standards, the landraces are generally quite allogamous [47,48]. Recent studies have also demonstrated that the level of allogamy might depend on the species of pollinating insects [49]. A further, effective mechanism could be derived by the spontaneous seed exchange practice occurring among farmers.…”

Section: Discussionmentioning

confidence: 99%

Serendipitous In Situ Conservation of Faba Bean Landraces in Tunisia: A Case Study

Babay

Khamassi

Sabetta

et al. 2020

Genes

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Cultivation of faba bean (Vicia faba L.) in Tunisia is largely based on improved varieties of the crop. However, a few farmers continue to produce local cultivars or landraces. The National Gene Bank of Tunisia (NGBT) recently launched a collection project for faba bean landraces, with special focus on the regions of the North West, traditionally devoted to cultivating grain legumes, and where around 80% of the total national faba bean cultivation area is located. The seed phenotypic features of the collected samples were studied, and the genetic diversity and population structure analyzed using simple sequence repeat markers. The genetic constitution of the present samples was compared to that of faba bean samples collected by teams of the International Center for Agricultural Research in the Dry Areas (ICARDA) in the 1970s in the same region, and stored at the ICARDA gene bank. The results of the diversity analysis demonstrate that the recently collected samples and those stored at ICARDA largely overlap, thus demonstrating that over the past 50 years, little genetic change has occurred to the local faba bean populations examined. These findings suggest that farmers serendipitously applied international best practices for in situ conservation of agricultural crops.

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“…In this respect, the identification of pollen resources can reveal part of their food plant preferences and dietary requirements and thus can guide future conservation measures and EU agri-environmental schemes. Identification and quantification is generally possible by labor-intensive pollen microscopy (Marzinzig et al, 2018) or nucleic acid sequence analysis (Danner et al, 2016). Approaches to the latter include DNA barcoding (Taberlet et al, 2012;Sickel et al, 2015;Bell et al, 2016) and genome skimming (Dodsworth, 2015).…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Dietary Diary of Bumble Bee

et al. 2020

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Bumble bees are important crop pollinators and provide important pollination services to their respective ecosystems. Their pollen diet and thus food preferences can be characterized through nucleic acid sequence analysis. We present ITS2 amplicon sequence data from pollen collected by bumble bees. The pollen was collected from six different bumble bee colonies that were placed in independent agricultural landscapes. We compared next-generation (Illumina), i.e., short-read, and thirdgeneration (Nanopore), i.e., MinION, sequencing techniques. MinION data were preprocessed using traditional and Nanopore specific tools for comparative analysis and were evaluated in comparison to short-read sequence data with conventional processing. Based on the results, the dietary diary of bumble bee in the studied landscapes can be identified. It is known that short reads generated by next-generation sequencers have the advantage of higher quality scores while Nanopore yields longer read lengths. We show that assignments to taxonomic units yield comparable results when querying against an ITS2-specific sequence database. Thus, lower sequence quality is compensated by longer read lengths. However, the Nanopore technology is improving in terms of data quality, much cheaper, and suitable for portable applications. With respect to the studied agricultural landscapes we found that bumble bees require higher plant diversity than only crops to fulfill their foraging requirements.

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Bee pollinators of faba bean (Vicia faba L.) differ in their foraging behaviour and pollination efficiency

Cited by 82 publications

References 71 publications

Yield benefits of additional pollination to faba bean vary with cultivar, scale, yield parameter and experimental method

Yield benefits of additional pollination to faba bean vary with cultivar, scale, yield parameter and experimental method

Serendipitous In Situ Conservation of Faba Bean Landraces in Tunisia: A Case Study

Analyzing the Dietary Diary of Bumble Bee

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