Results 21 to 30 of about 78,484 (304)

Effects of High Nitrogen Supply on the Susceptibility to Coolness at the Young Microspore Stage in Rice (Oryza sativa L.)

open access: yesPlant Production Science, 2000
The combined effects of high nitrogen supply, cool temperature regimes and shading on factors related to fertility in rice plants were investigated. High nitrogen supply during the period from the spikelet differentiation stage to the young microspore ...
Takami Hayashi   +3 more
doaj   +1 more source

Heteranthery in Clarkia: pollen performance of dimorphic anthers contradicts expectations. [PDF]

open access: yes, 2019
Premise of the studyWild plant species that require the services of pollen-feeding insects for reliable pollination may evolve features that attract and reward their mutualistic partners.
Buchmann S. L.   +4 more
core   +1 more source

Taxonomic significance of pollen morphology of Pterocephalus plumosus (Caprifoliaceae) [PDF]

open access: yesBotanica 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

SEM observation of pollen in 17 cherry germplasm resources [PDF]

open access: yesGuoshu xuebao
[Objective] Morphological characteristics of pollen grains of different cherry germplasm resources were observed under a scanning electron microscope. The similarities and differences in pollen among different germplasm resources were analyzed, so as to ...
ZHOU Junman   +11 more
doaj   +1 more source

<i>In vitro</i> Pollen Grain Germination and Tube Growth of Ten Iranian Jujube (<i>Ziziphus jujuba</i>) Cultivars

open access: yesNotulae 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

The role of forensic geoscience in wildlife crime detection [PDF]

open access: yes, 2006
The increase in both automation and precision in the analysis of geological materials has had significant impact upon forensic investigations in the last 10 years.
Bull, PA   +3 more
core   +1 more source

Disturbances in microsporogenesis and pollen grain development in Gagea lutea (L.) Ker. Gaw.

open access: yesActa 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

MADS-complexes regulate transcriptome dynamics during pollen maturation [PDF]

open access: yes, 2007
Background: Differentiation processes are responsible for the diversity and functional specialization of the cell types that compose an organism. The outcome of these processes can be studied at molecular, physiologic, and biochemical levels by comparing
Verelst, Wim   +5 more
core   +2 more sources

Pollen production in selected species of anemophilous plants

open access: yesActa 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

Iron Age to Medieval entomogamous vegetation and Rhinolophus hipposideros roost in south-eastern Wales (UK) [PDF]

open access: yes, 2006
Karst cave systems are well developed in Wales (UK) and, in some instances, constitute important bat roosts. Ogof Draenen, near Blaenavon in south-east Wales, is the most recent major cave discovery (1994) with already > 70 km of passages explored ...
Bronk   +24 more
core   +1 more source

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