Results 21 to 30 of about 398,539 (299)
Fungitoxicity in pollen grains [PDF]
Grana, 1983 Abstract While screening 45 samples of pollen suspension for their antifungal activity against Helminthosporium oryzae and Alternaria alternata, only that of Lycopersicon lycopersicum exhibited absolute toxicity against both the pathogens. The maximum inhibitory dilutions were found to be 1: 200 and 1: 500 (w/v) against A. alternata and H.
D. K. Pandey +3 more
openaire +1 more source
Notulae Scientia Biologicae, 2014 Jujube (Ziziphus jujuba) is a species particularly prone to erratic fruit set. Several causes such as pollen germination and tube growth involve in this behaviour.
Hossein ROUHAKHSH +3 more
doaj +3 more sources
Disturbances in microsporogenesis and pollen grain development in Gagea lutea (L.) Ker. Gaw.
Acta Agrobotanica, 2012 The meiotic division of microsporocytes and pollen grain development in Gagea lutea (L.) Ker.-Gaw. (Liliaceae) with fluorescence microscope (excitation light 400 nm) was observed after squashing the anthers in DAPI solution (fluorochrom dying DNA). Up to
Ewa Szczuka +4 more
doaj +1 more source
EFFECT OF SOME POLLEN CARRIERS ON YIELD AND FRUIT QUALITY OF SEWY DATE PALMS [PDF]
Journal of Plant Production, 2004 Pollination of Sewy date palms with pollen grains carried by sucrose solution, talc powder, wheat flour, bran and starch in three different percentages namely 25, 50 or 75% of pollen grains were compared to ordinary pollination with 100% pollen grains
A. Mohamed, A. Gobara, M. Ragab,
doaj +1 more source
Taxonomic significance of pollen morphology of Pterocephalus plumosus (Caprifoliaceae) [PDF]
Botanica Serbica, 2022 Comparative palynological studies of Dipsacaceae s.str. show considerable diversity in the pollen grain morphology of its representatives. The aim of this research was to provide more detailed palynomorphological data on selected taxa whose pollen grains
Zoya M. Tsymbalyuk +2 more
doaj +1 more source
Pollen production in selected species of anemophilous plants
Acta Agrobotanica, 2012 In the study, structural features of flowers of the following allergenic plant species were analysed: Betula verrucosa, Secale cereale, Rumex acetosella, Plantago major and Artemisia vulgaris.
Krystyna Piotrowska
doaj +1 more source
Structure and Function of a Multi‐Megadalton Virus‐Like Proteolytic Dodecahedron
Angewandte Chemie, EarlyView.Zuzalysin, a virulence metallopeptidase of the periodontal pathogen Porphyromonas gingivalis, is secreted as a latent, flexible ≈95‐kDa monomer. Calcium triggers cysteine‐switch activation and hierarchical assembly into pentamers, bipentamers, tripentamers, and a ≈5.6‐MDa, ≈355‐Å dodecahedron. Structures at 1.8–3.6 Å reveal a virus‐sized catalytic cage
Mariusz Madej +20 more
wiley +2 more sources
Ultramicroscopic Characterization of Mature Pollen Grains of Habenaria sagittifera
Horticultural Plant Journal, 2016 Transmission electron microscopy was conducted to characterize the mature pollen grains in the massulae of Habenaria sagittifera at anthesis to understand its ultramicroscopic features of mature pollen grains of this species.
Lin Liu
doaj +1 more source
Chloride fluxes in lily pollen tubes: a critical reevaluation
, 2004 Microelectrodes, made from a Cl?-selective liquid ion exchanger previously used to measure putative Cl- fluxes in Lilium longiflorum pollen tubes, were characterized. The electrodes were poorly selective, possessing only about 10-fold selectivity for Cl?
Mark A. Messerli +7 more
core +1 more source
Airborne pollen grains of Afyon, Turkey [PDF]
, 2002 The airborne pollen grains of Afyon have been studied for a two-year period (1999 - 2000) with a Durham sampler. A total of 14 367 pollen grains belonging to 40 taxa. have been identified and recorded with some unidentified ones.
Tatlidil, S +6 more
core +3 more sources