Results 31 to 40 of about 91,500 (264)
BEE FLOWERS: A HYPOTHESIS ON FLOWER VARIETY AND BLOOMING TIMES [PDF]
Evolution, 1975 In arctic (Kevan, 1972), temperate (Lovell, 1903), and tropical regions, the flowers of different species of plants in a given habitat at any one time usually exhibit a variety of colors, scents, morphologies, and blooming times. Bees are the primary pollinators of many of them (Baker and Hurd, 1968).
openaire +2 more sources
Topographic heterogeneity lengthens the duration of pollinator resources
Ecology and Evolution, 2020 The availability of sufficient and diverse resources across time is important for maintenance of biodiversity and ecosystem functioning. In this study, we examine the potential for variation in environmental conditions across topographic gradients to ...
Rachael L. Olliff‐Yang +1 more
doaj +1 more source
Notulae Scientia Biologicae, 2021 In this study, aposporic apomictic development and its relation to the different flower development stages were investigated by light and fluorescence microscopy in Crataegus tanacetifolia (Lam.) Pers. (Rosaceae). At pre-anthesis stage, aposporic initial
Aslıhan ÇETİNBAŞ-GENÇ +1 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction The use of herbal medical preparation (HMP) is rising among pediatric oncology patients, often to manage treatment‐related symptoms. Their effectiveness remains uncertain, and the risk of herb–drug interactions is underestimated.
Orianne Mahot +6 more
wiley +1 more source
Flowering: a time for integration
The International Journal of Developmental Biology, 2005 Flowering time is under the control of multiple environmental cues such as photoperiod and exposure to cold temperatures (vernalization). A few regulators named integrators of flowering time signals (LEAFY, SOC1 /AGL20 and FT ) integrate inputs from the different flowering cascades and convey the resulting outcome to floral meristem identity genes at ...
openaire +5 more sources
A Time to Grow, a Time to Flower [PDF]
The Plant Cell, 2005 Flowering is one of the most critical timing decisions for higher plants because it can determine the difference between reproductive success and failure. The transition from vegetative growth to flowering is controlled by a complex network of interconnected pathways influenced by ...
openaire +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Adolescents with haematological malignancies face significant emotional and relational challenges, often accompanied by difficulties in communicating their needs within the healthcare context. To address these issues, a narrative‐based psycho‐educational intervention based on the creation and prescription of Ironic Medications was ...
Marta Stoppa +7 more
wiley +1 more source
Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas +3 more
wiley +1 more source
Flower Morphogenesis: Timing Is Key [PDF]
Developmental Cell, 2009 Flowers are unique parts of plants because they form a predictable number of organs of defined identity. This exquisite regularity defines entire plant families and has been used for taxonomic classification since ancient times. In this issue of Developmental Cell, Liu et al.
openaire +2 more sources
Calpain small subunit homodimerization is robust and calcium‐independent
FEBS Letters, EarlyView.Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy +4 more
wiley +1 more source