Results 91 to 100 of about 28,966 (260)

Stratigraphic analyses of late-quaternary sediments from S’Albufera, North East Mallorca, Spain [PDF]

, 1995
1. Much of the environmental history of the western Mediterranean has been inferred from records obtained throughout a wider region. Very little work has been conducted on Mallorca.
Lawson, MP
core  

Genomic structure and ex situ conservation of the North American grapevine Vitis labrusca

PLANTS, PEOPLE, PLANET, EarlyView.
The North American wild grapevine species Vitis labrusca is an important source of disease resistance and climate resilience traits for breeding new grapevine cultivars. To ensure its continued use in breeding, V. labrusca must be accurately identified and genetically diverse material must be conserved.
Zoë Migicovsky, Clay Elzinga, Mia C. Lauzon, Thomas Connor, Kylie DeViller, Claire Dinn, Grace M. Earle, Emma Hockley, Olivia Lennon, Lillian A. Ricker, Peter M. Roberts, Katrina M. Robinson, Aditi Sharma, Paris N. Spencer, Sammy Stockdale, Liam L. Tingley, Annelies Yates, Jason P. Londo, Peter Cousins   +18 more
wiley   +1 more source

Pollen Tube Attraction by the Synergid Cell

, 2001
In flowering plants, guidance of the pollen tube to the embryo sac (the haploid female gametophyte) is critical for successful fertilization. The target embryo sac may attract the pollen tube as the final step of guidance in the pistil.
Narie Sasaki, Shizu Yabe, Yoshiki Nishimura, Haruko Kuroiwa, Tetsuya Higashiyama, Shin-ya Miyagishima, Tsuneyoshi Kuroiwa   +6 more
core   +1 more source

Speciation with gene flow

PLANTS, PEOPLE, PLANET, EarlyView.
Biodiversity is threatened by human activities, with extinction debt accumulating rapidly. Many of these activities change the connectivity of populations, fragmenting existing population systems or bringing previously isolated populations or species into contact.
Zhiqin Long, Xu Zhang, Yue Yu, Gregory L. Owens, Diana J. Rennison, Clarisse Palma‐Silva, Daniel Ortiz‐Barrientos, Loren H. Rieseberg   +7 more
wiley   +1 more source

The shared benefits of fallen fruits: A novel mechanism stabilizing a nursery pollination mutualism between Sambucus and kateretid beetles

PLANTS, PEOPLE, PLANET, EarlyView.
Understanding how cooperative interactions remain stable matters for biodiversity because many plants rely on specialist insects that can also impose reproductive costs. We studied the interaction between Sambucus sieboldiana and seed‐consuming Heterhelus beetles through detailed field observations and pollination experiments.
Suzu Kawashima, Hidehito Okada, Sadatomo Hisamatsu, Kenji Suetsugu   +3 more
wiley   +1 more source

Pollen Germination and Tube Growth

, 2014
Seeds and grains are staple food supply around the world and their production is the result of successful double fertilization of female gametophytes by male gametophytes.
王國祥, Wang, H.J., Huang, J.C., Jauh, G.Y.   +3 more
core   +1 more source

The pistil as a traffic light: Yellow‐to‐red color change likely influences pollinator visitation patterns in Saxifraga fortunei (Saxifragaceae)

PLANTS, PEOPLE, PLANET, EarlyView.
Flowers can communicate reproductive status to pollinators through visual cues. In Saxifraga fortunei, pistils often changed from yellow to red after pollination, and hoverflies and honeybees preferentially visited flowers with yellow pistils. This pattern suggests that a post‐pollination color shift confined to the pistil can reduce revisits to ...
Kazuma Takizawa, Masayasu Furukawa, Kenji Suetsugu   +2 more
wiley   +1 more source

Pollen tube incompatibility reaction on the stigma in selfpollinated Sinapis alba L.

Acta Societatis Botanicorum Poloniae, 2014
After selfpollination of Sinapis alba L. pollen tubes growth is inhibited on the stigma. The pollen grains germinate 3-4 hours after pollination. The pollen give rise to one or more pollen tubes. They grow along the papillae.
Renata Śnieżko, Krystyna Winiarczyk
doaj   +1 more source

Microtubular Motors in the Pollen Tube of Nicotiana tabacum

, 1992
The Angiosperm pollen tube Is specialized in delivering the sperm cells during the process of fertilization (Cresti and Tiezzi, 1990). Microtubules and actin filaments are the main components of the vegetative cell cytoskeleton, which study has been ...
Giampiero Cai, Antonio Tiezzi, Mauro Cresti, Cai, Giampiero, Moscatelli, Alessandra, Cecilia Del Casino, Del Casino, Cecilia, Tiezzi, Antonio, Alessandra Moscatelli, Cresti, Mauro, Bartalesi, Alessandro, Alessandro Bartalesi   +11 more
core   +1 more source

Pollen tube and plant reproduction [PDF]

, 2019
The pollen tube was a fundamental step forward in the evolution of terrestrial plants; in fact, it allowed plants to liberate themselves from water demand during reproduction.
Giampiero Cai, Cai, G., Cai G., Del Duca, S., Del Duca S., Stefano Del Duca   +5 more
core   +1 more source