Results 61 to 70 of about 19,341 (259)

Metabolomic Analysis of Pollen Grains with Different Germination Abilities from Two Clones of Chinese Fir (Cunninghamia lanceolata (Lamb) Hook)

Molecules, 2018
Pollen grains produce certain metabolites, which can improve or inhibit germination and tube growth. Metabolomic analysis of germinating and growing Chinese fir pollen has not been reported.
Seif Aldin Dawina Abdallah Fragallah, Pei Wang, Nuo Li, Yu Chen, Sizu Lin   +4 more
doaj   +1 more source

A twofold development and demise of pine stands in the Netherlands during the Allerød interstadial: two hypotheses to explain a link to climate change recorded in Greenland ice

Journal of Quaternary Science, EarlyView.
ABSTRACT The second half of the Allerød interstadial in the Netherlands is characterised by pine forest. Excavated trunks of 165 pine trees at Leusden‐Den Treek in the central Netherlands (LETR16) were dated by dendrochronology and radiocarbon. Two chronologically separated pine forest phases occurred during relatively warm periods as recorded in ...
Wim Z. Hoek, Jos Bazelmans, Otto Brinkkemper, Petra Doeve, Bas van Geel   +4 more
wiley   +1 more source

Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age

Journal of Quaternary Science, EarlyView.
ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin, Gill Plunkett, Neil Ogle   +2 more
wiley   +1 more source

Determination of Pollen Fertility of Some Cut Rose Varieties in Different Periods

Düzce University Faculty of Forestry Journal of Forestry
In rose breeding by hybridization, the viable pollen and germination rate of the male parent increases the rate of successful pollination. Therefore, a good variety of pollinators is always needed in hybridization studies.
Şüheda Basire Akça Yılmaz, Soner Kazaz   +1 more
doaj   +1 more source

Effects of the biological and chemical agents on the pollen germination of invasive species Impatiens parviflora DC. (Balsaminaceae)

Інтродукція Рослин, 2013
Pollen germination of invasive species Impatiens parviflora DC. is investigated in different mediums separately and together with pollen grains of other plants using method in vitro.
O.A. Ihnatiuk, L.P. Gaponova, I.D. Omeri
doaj   +1 more source

Effect of bio‐fertilization and edapho‐climatic conditions on chickpea nodulation, grain yields, and seed protein in a Mediterranean context: a meta‐analysis approach

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Chickpeas (Cicer arietinum L.) serve as a protein‐rich staple, particularly in Mediterranean countries, where they are often grown in marginal and water‐stressed areas. This meta‐analysis synthesized evidence from peer‐reviewed publications across Mediterranean countries to assess how chickpea rhizobial inoculation influences chickpea ...
Amira Hachana, Amir Souissi, Lewis Ziska, Katherine Morgan, Carina Yiu, Issam Achour, Asma Bouatrous, Imen Hemissi, Hanen Arfaoui, Anissa Riahi, Manel Bouraoui, Bouaziz Sifi   +11 more
wiley   +1 more source

Effect of population reinforcement method, site, and plant characteristics on early establishment of the rare endemic plant species Minuartia smejkalii

Nordic Journal of Botany, EarlyView.
Many habitat‐specialist plant species have been endangered by fragmentation or destruction of their habitats. Minuartia smejkalii is a serpentinophyte endemic to the Czech Republic. It is highly threatened by recent habitat destruction and fragmentation, calling for effective conservation measures.
Alrun Siebenkäs, Karolína Sučíková, Zuzana Münzbergová, Hana Pánková   +3 more
wiley   +1 more source

Assessment of Pollen Quality and Germination Dynamics in Chestnut (Castanea spp.): Implications of Genotypic Variation and Sucrose Concentration

ISPEC Journal of Agricultural Sciences
Pollen viability and germination are critical factors influencing reproductive success and nut yield in chestnuts (Castanea spp.). However, their dynamics across different genotypes and cultivars remain insufficient.
Burak AKYÜZ
doaj   +1 more source

Factors Influencing Date Pollen Viability

Journal of Agricultural and Marine Sciences, 1997
Pollen of seven date cultivars was stored at 4.5 -5.0'C using desiccator with or without silica gel and in vials outside the desicator as a control. Germination percentage was determined microscopically with a hemacytometer after harvest and at three and
M. O. El Mardi, E. Consolacion, O. AI-Manthari, H. AI-Nabhani   +3 more
doaj   +1 more source

Sexual reproduction in invasive Japanese knotweed (Reynoutria japonica) in south Sweden

Nordic Journal of Botany, EarlyView.
To understand the potential for northward expansion of knotweeds into currently uninvaded regions, it is crucial to assess the potential for sexual reproduction alongside the ongoing vegetative spread. For that reason, we tested viability in Reynoutria japonica seeds in south Sweden, a region where viable seeds had not been previously reported ...
Tina D'Hertefeldt, Annette Andersson, Ellen Andersson, Bea Nerer, Mattias West, Alexander Zimmerman   +5 more
wiley   +1 more source