Results 191 to 199 of about 170,502 (199)

Reproductive biology of Trillium govanianum, an endangered plant species endemic to the Himalaya: implications for conservation

Botany Letters, 2023
In this study, we investigated the reproductive biology of Trillium govanianum — a medicinally important endangered plant species endemic to the Himalaya.
K. Rashid, Sufiya Rashid, A. H. Ganie, I. A. Nawchoo, Anzar Ahmad Khuroo   +4 more
semanticscholar   +1 more source

Enhancing pollen competition by delaying stigma receptivity: pollen deposition schedules affect siring ability, paternal diversity, and seed production in Collinsia heterophylla (Plantaginaceae).

American-Eurasian journal of botany, 2011
PREMISE OF THE STUDY Even though pollen deposition schedules may have profound effects on the evolutionary outcome of pollen competition, few studies have investigated such effects in relation to pistil traits such as delayed stigma receptivity that ...
Åsa Lankinen, Josefin A. Madjidian
semanticscholar   +1 more source

Delayed stigma receptivity in Collinsia heterophylla (Plantaginaceae): genetic variation and adaptive significance in relation to pollen competition, delayed self-pollination, and mating-system evolution.

American-Eurasian journal of botany, 2007
To increase our knowledge about mating-system evolution, we need to understand the relationship between specific floral traits and mating system. Species of Collinsia (Plantaginaceae) vary extensively in mating system; this variation is associated with ...
Åsa Lankinen, W. S. Armbruster, Liv Antonsen   +2 more
semanticscholar   +1 more source

Evolutionary maintenance of stigma-height dimorphism in Narcissus papyraceus (Amaryllidaceae).

American-Eurasian journal of botany, 2002
Stigma-height dimorphism is a sexual polymorphism in which plant populations are composed of two floral morphs that differ significantly in style length but not anther position.
J. Arroyo, S. Barrett, Rosario Hidalgo, W. W. Cole   +3 more
semanticscholar   +1 more source

Fritillaria yalcinii (Liliaceae), a new species from southeastern Turkey

Nordic Journal of Botany
Fritillaria yalcinii (Liliaceae) is described as a new species from Diyarbakır Province, southeastern Turkey. It is superficially similar to F. carica, F. forbesii, F. minima, F. minuta, F. mughlae and F.
Maruf Balos, Cahit Çeçen, M. Tekşen, Hasan Yıldırım, Veysel Sonay   +4 more
semanticscholar   +1 more source

Quantitative evaluation of stigma polymorphism in a tristylous weed, Lythrum salicaria (Lythraceae).

American-Eurasian journal of botany, 1999
Tristyly involves three different forms of flowers that differ reciprocally in the heights of stigmas and anthers within flowers. Apart from the style and stamen lengths, heterostylous species also demonstrate pollen and stigma polymorphisms.
B. Hermann, T. K. Mal, R. Williams, N. Dollahon   +3 more
semanticscholar   +1 more source

Anatomy of the unusual stigma in Orchidantha (Lowiaceae).

American-Eurasian journal of botany, 2004
The stigma of Orchidantha is unlike any other stigma in the Zingiberales. It is zygomorphic and dorsiventral, and its complicated structure has confused botanists resulting in many different descriptions and interpretations.
L. Pedersen, B. Johansen
semanticscholar   +1 more source

Pollination biology of basal angiosperms (ANITA grade).

American-Eurasian journal of botany, 2009
The first three branches of the angiosperm phylogenetic tree consist of eight families with ∼201 species of plants (the ANITA grade). The oldest flower fossil for the group is dated to the Early Cretaceous (115-125 Mya) and identified to the Nymphaeales.
L. B. Thien, P. Bernhardt, M. Devall, Zhiduan Chen, Yi-Bo Luo, Jianfeng Fan, Liang-Chen Yuan, J. Williams   +7 more
semanticscholar   +1 more source

Floral traits determine pollinator visitation in Rhododendron species across an elevation gradient in the Sikkim Himalaya

Alpine Botany, 2019
Shweta Basnett, R. Ganesan, S. Devy
semanticscholar   +1 more source