Results 71 to 80 of about 398,539 (299)
Journal of Quaternary Science, EarlyView.ABSTRACT While the Antarctic region has experienced significant climatic changes over the Holocene, few high‐resolution records have examined their effects on the local biota. In order to understand past ecological shifts and forecast future changes, it is important to obtain high‐resolution palaeoecological records from this region.
Xaali O'Reilly‐Berkeley +8 more
wiley +1 more source
Pollen morphology of 31 taxa of genus Iris(Iridaceae)and its taxonomic implications
Guangxi ZhiwuTo investigate the pollen morphology and its potential taxonomic implications for genus Iris L.(Iridaceae), the pollen grains from 31 taxa across three subgenera of Iris were used as materials.
ZHU Ying*, SONG Hua, LI Kai, ZHANG Lei, WANG Baibing
doaj +1 more source
Ornamental Horticulture, 2019 Pollen viability and stigma receptivity are prerequisites for successful cross-pollination and seed set in Swainsona formosa. In this study, the pollen viabilities and stigma receptivities was assayed by in vitro pollen germination and simple hand ...
Zulkarnain Zulkarnain +2 more
doaj +1 more source
Generating images of hydrated pollen grains using deep learning
, 2022 Pollen grains dehydrate during their development and following their departure from the host stigma. Since the size and shape of a pollen grain can be dependent on environmental conditions, being able to predict both of these factors for hydrated pollen ...
Praeger, Matthew +3 more
core +1 more source
Holocene vegetation change and fire–plant diversity shifts in Mediterranean France
Journal of Quaternary Science, EarlyView.ABSTRACT Changes in fire activity are recognized as a major threat to biodiversity and vegetation communities across the Mediterranean Basin. However, long‐term fire–vegetation interactions remain poorly investigated. Here, we combine a high‐resolution charcoal record with pollen data from the “Étang des Aulnes” lake (southern France) to reconstruct ...
Cécile Latapy +13 more
wiley +1 more source
Труды по прикладной ботанике, генетике и селекции, 2019 Background. In breeding work, it is necessary to take into account such an important feature as male sterility of the hybrids obtained. If a plant has visually visible anthers and pollen, the quality of the pollen grains themselves may be low.
O. N. Voronova, V. A. Gavrilova
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Analysis of airborne pollen grains in Kirklareli
, 2011 A continuous aeropalynological survey of the atmosphere of Kirklareli was carried out from January 2002 to December 2003 by means of the gravimetric method using Durham apparatus. Weekly pollen grains in per cm(2) were calculated. During these 2 years, a
Bicakci, Adem +3 more
core +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT Upland farming in Europe is frequently assumed to have been limited and precarious, despite relict spade‐dug ridges providing firm evidence of past crop growing. Direct evidence for crop types in post‑Medieval to Modern (~since 1500 CE) uplands is rare; yet, in Ireland, relict spade‐dug ridges that date to this period are commonly interpreted ...
Helen Essell, Gill Plunkett
wiley +1 more source
Palynological study of some species in Grumorsae group of the genus Ranunculus in Iran
تاکسونومی و بیوسیستماتیک, 2014 In this research, pollen grains of some species of Grumorsae group of Ranunculus were studied. In doing so, pollen grains of 13 species were studied by light microscope and the surface of nine pollen grains has studied by Scanning Electron Microscope ...
Maneezheh Pakravan +2 more
doaj
Environmental Research Letters, 2013 Pollen taxon in sediment samples can be identified by analyzing pollen morphology. Identification of related species based on pollen morphology is difficult and is limited primarily to genus or family.
Fumio Nakazawa +8 more
doaj +1 more source