Results 121 to 130 of about 35,535 (302)

Functional analysis of the two Brassica AP3 genes involved in apetalous and stamen carpelloid phenotypes.

open access: yesPLoS ONE, 2011
The Arabidopsis homeotic genes APETALA3 (AP3) and PISTILLATA (PI) are B genes which encode MADS-box transcription factors and specify petal and stamen identities. In the current study, the stamen carpelloid (SC) mutants, HGMS and AMS, of B.
Yanfeng Zhang   +6 more
doaj   +1 more source

A step into the shadows: Evolutionary shifts in fruit structure and dispersal strategies in Asian mycoheterotrophic Ericaceae

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
This study examines how the fruits of non‐photosynthetic forest plants in the Monotropoideae (Ericaceae) have evolved into the diversity observed today. By analyzing four Asian species, we identified a shift from dry, dehiscent fruits that release seeds into the air to fleshy, berry‐like fruits adapted for animal dispersal.
Alexey N. Sorokin   +9 more
wiley   +1 more source

Impact of small‐scale gravity waves on tracer transport

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
We extend a gravity wave (GW) parametrization to calculate the tracer transport due to the GW–Stokes drift and next‐order effects, where the approach is validated by comparing coarse‐resolution simulations with parametrized GWs to high‐resolution, wave‐resolving reference simulations.
Irmgard Knop   +2 more
wiley   +1 more source

Dismantling the genus Tarenna (Rubiaceae: Pavetteae) in Africa and Madagascar, with the description of three new genera

open access: yesTAXON, EarlyView.
Abstract As presently circumscribed, the Paleotropical genus Tarenna, belonging to the tribe Pavetteae (Rubiaceae), comprises about 200 species and has its centres of diversity in tropical Asia and Africa. Previous molecular phylogenetic studies of the tribe revealed the polyphyly of Tarenna, suggesting that the genus needs to be recircumscribed ...
Petra De Block   +3 more
wiley   +1 more source

Task- and Risk-Mapping Study of Hybrid Vegetable Seed Production in India [PDF]

open access: yes, 2007
Gives an overview of vegetable seed production in India, followed by recommendations for monitoring high-risk tasks, training, and capacity building to improve labor ...
Labowitz, Sarah, Venkateswarlu, Davuluri
core   +1 more source

Pitardia resurrected: A new member of subtribe Menthinae (Lamiaceae)

open access: yesTAXON, EarlyView.
Abstract Despite tremendous progress towards clarifying phylogenetic relationships within the mint family (Lamiaceae), uncertainty remains regarding relationships among some major clades as well as the proper placement of some genera. While researching the genus Nepeta, a species from northeastern Morocco, N.
Abdelmonaim Homrani Bakali   +3 more
wiley   +1 more source

Division of labour between dimorphic stamens in Melastoma candidum (Melastomataceae): Role of stamen strength in the biomechanics of pollination

open access: yesJournal of Pollination Ecology
The division of labour hypothesis suggests that plants exhibiting heteranthery utilise different stamen types for distinct purposes; feeding stamens provide pollen as a reward for pollinators, whereas pollinating stamens ensure successful reproduction ...
Shogo Hachiman   +2 more
doaj   +1 more source

Typifications in the tribe Browallieae (Cestroideae: Solanaceae)

open access: yesTAXON, EarlyView.
Abstract The tribe Browallieae is a monophyletic group comprising Browallia and Streptosolen. These genera are of significant interest in the horticulture industry due to their ornamental potential. Despite their clear placement in Solanaceae, the tribe presents several taxonomic, phylogenetic, and nomenclatural challenges.
David Hoyos, Sandra Knapp, Rocío Deanna
wiley   +1 more source

A genetic and molecular model for flower development in Arabidopsis thaliana [PDF]

open access: yes, 1991
Cells in developing organisms do not only differentiate, they differentiate in defined patterns. A striking example is the differentiation of flowers, which in most plant families consist of four types of organs: sepals, petals, stamens and carpels, each
Bowman, John L.   +6 more
core  

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