Results 71 to 80 of about 3,583 (178)
ABSTRACT Intensive agriculture and urbanization have led to habitat degradation and fragmentation, reducing plant diversity and subsequently reducing pollinator abundance and richness. This paper investigates the conservation potential of green infrastructure in allotment gardens, which are a common form of urban land use.
Dagmar Haase, Dara Gaeva
wiley +1 more source
The aim of the current study was to determine the floral phenology, nectar secretion dynamics, and honey production potentials of two naturally growing lavender species (L. dentata and L. pubescens), in southwestern Saudi Arabia.
Nuru Adgaba +5 more
doaj +1 more source
Floral biological investigations of apple cultivars in relation to fire blight
Floral activity was studied in two apple cultivars: an Erwinia-tolerant (Treedorn') and a sensitive one (`Sampion'). Since more types of protogyny occur in apples, the period of stigma activity is different.
Zs. Orosz-Kovács +5 more
doaj +1 more source
Abstract Floral mimicry of decaying substrates of animal origin, such as carrion or faeces, is associated with unusual traits such as geoflory, deep maroon or yellow colouration, floral hairs and unpleasant odour, but the functional significance of these traits for attracting and manipulating pollinators has seldom been examined.
Adam Shuttleworth +3 more
wiley +1 more source
The nectar secretion of some cultivated and spontaneous plant species
The work presents the results of our researches on the nectar secretion of the following species: Fagopyrum esculentum Mnch., Phacelia tanacetifolia Benth., Salvia verticillata L., Trifolium hybridum L.
Florica JULA, Gh. ILLYES
doaj +1 more source
ABSTRACT Division of labour in reproduction and in task performance are two hallmarks of insect societies. Bumble bees and honey bees are both classified as eusocial, but differ in the social organization of their colonies and in the hormonal regulation of division of labour.
Hagai Yehoshua Shpigler +8 more
wiley +1 more source
The genus Zeyheria (Bignoniaceae) comprises only two species, both of which have been described as possessing a reduced and non-functional nectary disk.
Silvia Rodrigues Machado +2 more
doaj +1 more source
Silene, a versatile model system: from sex and genome evolution to ecology and speciation
Summary Fundamental and applied research in evolutionary biology benefits from the use of model systems in which approaches from disparate disciplines can be integrated. Here, we review recent progress in evolutionary research on the long‐standing model system Silene, a large genus with a well‐resolved phylogeny and newly available, expanded genomic ...
Sophie Karrenberg +16 more
wiley +1 more source
The nectar secretion of Ziziphus flowers was studied by removing and measuring the nectar every four hours, for two consecutive days, from 88 flowers of four trees (‘repeated sampling’).
Nuru Adgaba +4 more
doaj +1 more source
Summary In plants, a key example of convergence is the repeated evolution of floral traits associated with the transition from outcrossing to self‐fertilization, often resulting in the ‘selfing syndrome’ (e.g. reduced flower size and loss of scent). However, potentially overlooked changes concern the pollen coat, which plays a role in different aspects
Ömer İltaş +7 more
wiley +1 more source

