Results 101 to 110 of about 1,430 (195)

An Assessment of the Evolutionary Stability of Distyly in Hedyotis Caerulea (Rubiaceae) [PDF]

, 2010
Distylous species of flowers possess two distinct floral morphs that are generally found in equal numbers in naturally occurring populations. The flower form that has a relatively long style is called a pin the form with a short style is a thrum ...
Sampson, Dennis Archie
core   +4 more sources

Risk of genetic vulnerability and aspects of the reproductive biology of Psychotria ipecacuanha (Rubiaceae), a threatened medicinal plant species of Brazilian forests

Acta Botânica Brasílica
Psychotria ipecacuanha, commonly known as Ipeca, is a medicinal plant of pharmacological and economic value. The species is distylous; it has populations with two floral morphs, one with long and one with short styles.
Patrícia Campos da Silva, Talita Oliveira Nascimento, Willian Krause, Douglas Siqueira de Almeida Chaves, Celice Alexandre Silva   +4 more
doaj   +1 more source

Quantitative Evaluation of Reciprocal Herkogamy in the Distylous Species, Hedyotis caerulea (Rubiaceae) [PDF]

, 2012
Hedyotis caerulea possesses two distinct floral morphs that are generally found in equal numbers in naturally occurring populations. Flowers either possess a relatively long style and short anthers, called a “pin,” or a short style and long anthers ...
Krebs, Robert A., Sampson, Dennis A.
core   +2 more sources

The Primula edelbergii S‐locus is an example of a jumping supergene

Molecular Ecology Resources, Volume 24, Issue 6, August 2024.
Abstract Research on supergenes, non‐recombining genomic regions housing tightly linked genes that control complex phenotypes, has recently gained prominence in genomics. Heterostyly, a floral heteromorphism promoting outcrossing in several angiosperm families, is controlled by the S‐locus supergene.
Giacomo Potente, Narjes Yousefi, Barbara Keller, Emiliano Mora‐Carrera, Péter Szövényi, Elena Conti   +5 more
wiley   +1 more source

Biologia da polinização e sistema reprodutivo de Psychotria barbiflora DC. (Rubiaceae) Pollination biology and breeding system of Psychotria barbiflora DC. (Rubiaceae)

Acta Botânica Brasílica, 2004
O estudo foi realizado no período de abril/1999 a setembro/2000, no Parque Estadual Dois Irmãos, Recife (PE) Brasil, um remanescente de floresta Atlântica.
Luciana Almeida Gomes Teixeira, Isabel Cristina Machado   +1 more
doaj   +1 more source

Asymmetrical disassortative pollination mediated by long‐/short‐tongued pollinators in a distylous Limonium myrianthum (Plumbaginaceae) with a short corolla tubular small flower

Ecology and Evolution, Volume 14, Issue 4, April 2024.
The pollination efficiency and their effects on floral morph variation of short‐tongued and long‐tongued pollinators were investigated in two Limonium myrianthum populations with short corolla tubular small flowers and considerable floral morph variation. We found that asymmetrical disassortative pollination affects floral morph variation.
Fangfang Jiao, Xiaowei Wang, Aiqin Zhang
wiley   +1 more source

Características palinológicas de las subspecies de Linum mucronatum Bertol. con heterostilia [PDF]

, 2014
Linum mucronatum is a heterostylous species from sect. Syllinum with four subspecies in Iran. The present study examines palynological characteristics of the heterostylous subspecies of Linum mucronatum, pollen characters of brevistylous individuals ...
Farahani, F., Noormohammadi, Z., Sheidai, M., Talebi, S. M.   +3 more
core   +3 more sources

Genomic analyses of the Linum distyly supergene reveal convergent evolution at the molecular level [PDF]

, 2022
Juanita Gutiérrez‐Valencia, Marco Fracassetti, Emma L. Berdan, Ignas Bunikis, Lucile Solér, Jacques Dainat, Verena E. Kutschera, Aleksandra Losvik, Aurélie Désamoré, P. William Hughes, Alireza Foroozani, Benjamin Laenen, Edouard Pesquet, Mohamed Abdelaziz, Olga Vinnere Pettersson, Björn Nystedt, Adrian C. Brennan, Juan Arroyo, Tanja Slotte   +18 more
openalex   +1 more source

Genetic architecture and evolution of the S locus supergene in Primula vulgaris [PDF]

, 2016
Darwin’s studies on heterostyly in Primula described two floral morphs, pin and thrum, with reciprocal anther and stigma heights that promote insect-mediated cross-pollination.
A Ernst, A Ernst, AG McCubbin, AJ Richards, AJ Richards, AR Mast, BG Turgeon, CB Bridges, CD Bell, CD Darlington, CR Darwin, CR Darwin, D Charlesworth, D De Winton, D Lewis, DG Lloyd, EM Turk, HJ Kim, IW Manfield, J Cocker, J Li, J Li, J Li, J Li, J Wang, JG Piper, JL Crosby, JL Crosby, JW Thomas, K Mather, KR Shivanna, M Joron, MA Webster, MA Webster, MA Webster, MD Nowak, ME Dodd, N Abbasi, N Verhoef, RA Fisher, RP Gregory, S Magallón, SCH Barrett, T Schwander, T Viaene, VPJ Dowrick, W Bateson, WF Bodmer, X Xia, Y Yoshida   +49 more
core   +1 more source

The Ecology Of Homostyle And Heterostyle Primroses Primula vulgaris Huds. [PDF]

, 1986
Genetic theory has predicted the spread of homostyly through heterostyle populations but this has not happened over the last 40 years. This thesis compares the ecology of the three primrose morphs (pin, thrum, homostyle) to determine whether ecological ...
Boyd, Mark Allen
core   +1 more source