Results 41 to 50 of about 25,787 (293)

The evolution of anther morphology in orchids: incumbent anthers, superposed pollinia, and the vandoid complex [PDF]

American Journal of Botany, 2002
The anther is the source of several of the principal characters traditionally used for classification in Orchidaceae, especially in Epidendroideae. In particular, anther and pollinium orientation are important, but little‐studied characters; it is not known whether various instances of these states are achieved in the same way. We examined variation in
Freudenstein, John V., Harris, E.M., Rasmussen, Finn Preben Nygaard   +2 more
openaire   +2 more sources

A RING-type E3 ligase controls anther dehiscence by activating the jasmonate biosynthetic pathway gene DEFECTIVE IN ANTHER DEHISCENCE1 in Arabidopsis

, 2014
Suppression of expression of DAF [DEFECTIVE IN ANTHER DEHISCENCE1 (DAD1)-Activating Factor], a gene that encodes a putative RING-finger E3 ligase protein, causes non-dehiscence of the anthers, alters pollen development and causes sterility in 35S:DAF ...
Wei-Han Hsu, Yan-Jhu Peng, Yu-Pei Huang, Pei-Chun Liao, Ching-Fang Shih, Chang-Hsien Yang, Jun-Yi Yang, Choon-Meng Tan   +7 more
core   +1 more source

Floral traits and hermaphrodite abundance shape female advantage in a gynodioecious plant

American Journal of Botany, EarlyView.
Abstract Premise Gynodioecy is maintained through female advantage in seed fitness that depends on the sex ratio of a population. We hypothesized that females of Silene acaulis would exhibit floral traits associated with elevated outcross pollination and that sex ratio would impact pollen limitation and inbreeding depression such that female advantage ...
Emma K. Chandler, Megan L. DeMarche
wiley   +1 more source

Climatic thresholds and temporal decoupling drive reproductive phenology in Neotropical cloud forests: a 36‐year analysis

Ecography, EarlyView.
Reproductive phenology influences ecosystem functioning and climate sensitivity in tropical montane cloud forests, but phase‑specific climatic thresholds and the temporal coupling between flowering and fruiting remain poorly quantified over decadal scales. We analyzed a 36‑year monthly record (1983–2018) from a Venezuelan cloud forest (15 focal species)
Saúl Flores, Nuriangel Casanova‐Hernández, Hendrik Sulbaran‐Pineda   +2 more
wiley   +1 more source

Pollen Morphology of Crucianella L. (Rubiaceae) Based on Light and Scanning Electron Microscope Data and Implications for Taxonomy

Microscopy Research and Technique, EarlyView.
This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk, Zelal Kücük, Gülşah Bağcıvan, Ruziye Daşkın   +3 more
wiley   +1 more source

Development of High Yielding Glutinous Cytoplasmic Male Sterile Rice (Oryza sativa L.) Lines through CRISPR/Cas9 Based Mutagenesis of Wx and TGW6 and Proteomic Analysis of Anther

Agronomy, 2018
Development of high yielding and more palatable glutinous rice is an important goal in breeding and long-standing cultural interaction in Asia. In this study, the TGW6 and Wx, major genes conferring 1000 grain weight (GW) and amylose content (AC), were ...
Yue Han, Dengjie Luo, Babar Usman, Gul Nawaz, Neng Zhao, Fang Liu, Rongbai Li   +6 more
doaj   +1 more source

Pollen of Arbutus unedo: Effects of plant growth regulators [PDF]

Botanica Serbica, 2020
Arbutus unedo is a species mainly used for landscaping purposes and lately for honey production. Its antioxidant characteristics have also been a subject of of research interest.
Zeliha Gökbayrak, Hakan Engin, Arda Akçal, Hatice Kiraz   +3 more
doaj   +1 more source

ABSCISSION OF ANTHERS IN CECROPIA LOEFL [PDF]

Acta Botanica Neerlandica, 1977
Abscission of anthers was found in most Cecropia species studied for a taxonomic treatment of this genus for the Amazon region of Brazil*. Cecropia is a common genus in the neotropics. It comprises about 80 species. Most of them are arborescent pioneer plants and common in more or less open (secondary) vegetation.
openaire   +2 more sources

Abnormal anther locule during anther development of autotetraploid rice.

, 2018
(A) Premeiotic interphase, (B-C) meiosis stage, (G) single microspore stage, (H) mature pollen, (B) double vascular bundle (VB). (D, E, F, I, J) abnormal anther locule of each stage. The red arrow indicates the abnormal anther locule. Bars = 50 μm.
Xiang Li (114679), Yamin Jiao (5598293), Hang Yu (278278), Xiangdong Liu (79858), Jinwen Wu (3722080), Muhammad Qasim Shahid (840583)   +5 more
core   +1 more source

Bee pollen as functional food and environmental bioindicator: current evidence and future challenges

Journal of the Science of Food and Agriculture, EarlyView.
Abstract Bee pollen (BP), a plant‐derived product collected by honey bees, is increasingly promoted as a functional food due to its content of proteins, essential amino acids, lipids, vitamins, minerals, and bioactive compounds such as polyphenols and flavonoids.
Luigi Parrotta, Stefano Del Duca
wiley   +1 more source