Results 11 to 20 of about 79,061 (307)

THE RELATION BETWEEN HONEY STORAGE AND POLLEN GRAINS AT HONEY BEES WORKERS (Apis Mellifera L) ACTIVITY ON WANDERING AND COLLECTION TO PROVIDE FOOD NECESSARY FOR THE GROWTH AND DEVELOPMENT OF THE COLONY [PDF]

Mesopotamia Journal of Agriculture, 2007
Effect of storing honey and pollen grains for bees workers on groups of honey bees (strong. medium. weak) show that the best area was for the strong groups and the least for the weak ones.
Mahdi Mohammed Salih Saeed
doaj   +1 more source

Boron deficiency responses in maize (Zea mays L.) roots

Journal of Plant Nutrition and Soil Science, EarlyView., 2023
Abstract Background Boron (B) is an essential micronutrient for plants. Dicot plants respond to insufficient B supply by altering root architecture and root hair growth. How root systems of rather low‐B demanding monocot species such as maize (Zea mays L.) respond to B deficiency in terra has not been experimentally resolved, yet.
Manuela Désirée Bienert, Astrid Junker, Michael Melzer, Thomas Altmann, Nicolaus von Wirén, Gerd Patrick Bienert   +5 more
wiley   +1 more source

Pollen morphology of selected species of the subfamily Bombacoideae (Malvaceae sensu lato)

Acta Botânica Brasílica, 2014
We analyzed the pollen grains of 11 species within the subfamily Bombacoideae. The pollen grains were acetolyzed, after which they were analyzed and photographed under light microscopy. Unacetolyzed pollen grains were analyzed and photomicrographed under
Vanessa Holanda Righetti de Abreu, Claudia Barbieri Ferreira Mendonça, Vania Gonçalves-Esteves   +2 more
doaj   +1 more source

Mesoscale Atmospheric Transport of Ragweed Pollen Allergens from Infected to Uninfected Areas [PDF]

, 2016
Allergenic ragweed (Ambrosia spp.) pollen grains, after being released from anthers, can be dispersed by air masses far from their source. However, the action of air temperature,humidity and solar radiation on pollen grains in the atmosphere could ...
A Bacsi, A Dahl, A Stach, A Woś, B Tokarska-Guzik, B Šikoparija, B Šikoparija, B. Šikoparija, BD Singer, C Galán, C Rogers, C. A. Skjøth, CA Skjøth, D. Jenerowicz, DJ Bass, F Zemmer, GF Schäppi, GF Schäppi, H Ribeiro, HA Habenicht, I Kasprzyk, J Belmonte, J Belmonte, J Buters, J Buters, J Dearnaley, J Sommer, JM Hirst, JT Buters, K Pazmandi, L Cecchi, L Cecchi, LH Ziska, LH Ziska, M Gaudeul, M Hernández-Ceballos, M Prank, M Saar, M Smith, M Smith, M. Czarnecka-Operacz, M. Smith, MC Leiblein-Wild, MK Agarwal, MK Agarwal, ML Oswalt, P Mandrioli, P. Bogawski, R Albertini, RR Draxler, S Jäger, SS Mohapatra, SX Xie, WR Solomon, WW Busse, Ł. Grewling   +55 more
core   +2 more sources

Determination of cardinal temperatures for sugar apple ( Annona squamosa L.)

Ciência e Agrotecnologia, 2016
The sugar apple is highly dependent on the pollination and fruit tree pollen performance is crucial for successful fertilization and fruit set. The objective of this study was to determine the cardinal temperatures for in vitro pollen grains germination ...
Bruno Rafael Alves Rodrigues, Rayane Carneiro dos Santos, Silvia Nietsche, Maria Olívia Mercadante-Simões, Isabella Renata Gomes da Cunha, Marlon Cristian Toledo Pereira   +5 more
doaj   +1 more source

Pollen grains for oral vaccination [PDF]

Journal of Controlled Release, 2014
Oral vaccination can offer a painless and convenient method of vaccination. Furthermore, in addition to systemic immunity it has potential to stimulate mucosal immunity through antigen-processing by the gut-associated lymphoid tissues. In this study we propose the concept that pollen grains can be engineered for use as a simple modular system for oral ...
Shashwati U, Atwe, Yunzhe, Ma, Harvinder Singh, Gill   +2 more
openaire   +2 more sources

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

Plant 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, Kazunari Kashiwabara, Tomoya Yamaguchi, Setsuo Koike   +3 more
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, Daniella Ivanova, Lyudmila M. Nitsenko   +2 more
doaj   +1 more source

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

Guoshu 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, DUAN Xuwei, ZHANG Kaichun, ZHANG Xiaoming, YAN Guohua, ZHOU Yu, WANG Jing, FENG Chen, WANG Wei, WANG Naiyu, YUAN Hui, WU Chuanbao   +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

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, Gholamhossein DAVARYNEJAD, Majid RAHEMI, Bahram ABEDI   +3 more
doaj   +3 more sources