Results 61 to 70 of about 52,751 (307)

Embryological observations on seed abortion in Hibiscus syriacus L. and physiological studies on nutrients, enzyme activity and endogenous hormones

BMC Plant Biology, 2023
Under natural conditions, most Hibiscus syriacus L. individuals form very few mature seeds or the mature seeds that do form are of poor quality. As a result, seed yield is poor and seeds have low natural germinability.
Xiaohong Wang, Jiajia Chen, Lingxuan Hu, Jingwen Zhang, Fen Xiao, Shengqian Zhang, Fengxia Shao, Liqun Huang   +7 more
doaj   +1 more source

Two Carbohydrate-Based Natural Extracts Stimulate in vitro Pollen Germination and Pollen Tube Growth of Tomato Under Cold Temperatures

Frontiers in Plant Science, 2021
To date, it is widely accepted by the scientific community that many agricultural regions will experience more extreme temperature fluctuations. These stresses will undoubtedly impact crop production, particularly fruit and seed yields.
Ferdousse Laggoun, Ferdousse Laggoun, Nusrat Ali, Sabine Tourneur, Sabine Tourneur, Grégoire Prudent, Bruno Gügi, Marie-Christine Kiefer-Meyer, Alain Mareck, Florence Cruz, Jean-Claude Yvin, Eric Nguema-Ona, Jean-Claude Mollet, Frank Jamois, Arnaud Lehner   +14 more
doaj   +1 more source

Oviposition by the Banded Sunflower Moth, \u3ci\u3eCochylis Hospes\u3c/i\u3e (Lepidoptera: Cochylidae) in Response to \u3ci\u3eHelianthus Annuus\u3c/i\u3e Pollen [PDF]

, 2017
Oviposition on an artificial substrate by the banded sunflower moth Cochylis hospes Walsingham was examined in response to sunflower pollen (Helianthus annuus) and sunflower pollen extract.
Barker, John F, Grugel, Sharon
core   +2 more sources

Phylogenomics reveals the evolution of floral traits associated with pollinators and pollinator–prey conflict within the carnivorous Pinguicula subgenus Temnoceras

American Journal of Botany, EarlyView.
Abstract Premise The carnivorous plant genus Pinguicula (Lentibulariaceae) exhibits remarkable floral diversity associated with pollination, particularly in the largest subgenus Temnoceras, which spans Mexico and Central America. Despite this diversity, the relationships between species and the evolution of key floral traits remain unresolved. Here, we
Yunjia Liu, Qianshi Lin, Steven J. Fleck, Martín Mata‐Rosas, Enrique Ibarra‐Laclette, Tanya Renner   +5 more
wiley   +1 more source

The effect of drought stress on the limits and costs of plasticity in floral longevity in response to pollinator decline

American Journal of Botany, EarlyView.
Abstract Premise Declines in pollinator populations can reduce pollination services to plants, resulting in lower seed production. In response to these reductions, plants could increase the probability of pollinator visitation by plastically extending floral longevity.
Caelen McCabe, Christina M. Caruso
wiley   +1 more source

Influence of Apis mellifera in-hive conditions on germination capacity of rapeseed pollen (Brassica napus)

Revista de la Facultad de Ciencias Agrarias
Brassica napus L. (rapeseed, canola) ranks third in worldwide importance among oilseeds. The production of hybrid rapeseed seed requires an androsterile female parent; therefore, fertilization is possible through pollinators carrying viable pollen ...
Luciano Alberto Marinozzi, Soledad Camila Villamil, Liliana María Gallez   +2 more
doaj   +1 more source

Ploidy Level Influences Pollen Tube Growth and Seed Viability in Interploidy Crosses of Hydrangea macrophylla

Frontiers in Plant Science, 2020
All Hydrangea macrophylla cultivars tested to date are diploid or triploid and triploid H. macrophylla have thicker stems, larger flowers, and larger stoma compared to related diploids.
Lisa Alexander
doaj   +1 more source

The MED30 subunit of mediator complex is essential for early plant development and promotes flowering in arabidopsis thaliana [PDF]

, 2019
Mediator is a large multiprotein complex that is required for the transcription of most, if not all, genes transcribed by RNA Polymerase II. A core set of subunits is essential to assemble a functional Mediator in vitro and, therefore, the corresponding ...
Arellano, Sofía Maité, Arias, Leonardo Agustín, Cerdan, Pablo Diego, Fiol, Diego Fernando, Iñigo, Sabrina, Jaskolowski, Aime, Lorenzi, Hernan, Muschietti, Jorge Prometeo, Oldrá, María Belén, Pagnussat, Gabriela Carolina, Sede, Ana Rocío   +10 more
core   +1 more source

Pollen-expressed RLCKs control pollen tube burst

Plant Communications
In angiosperms, the pollen tube enters the receptive synergid cell, where it ruptures to release its cytoplasm along with two sperm cells. This interaction is complex, and the exact signal transducers that trigger the bursting of pollen tubes are not well understood.
Yin-Jiao Xu, Ting Luo, Peng-Min Zhou, Wei-Qi Wang, Wei-Cai Yang, Hong-Ju Li   +5 more
openaire   +2 more sources

Local Specific IgE Levels Can Predict and Monitor the Therapeutic Response to Subcutaneous Immunotherapy With House Dust Mite

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Identifying predictive and monitoring biomarkers for allergen immunotherapy response is crucial for enhancing clinical efficacy. This study aims to investigate the systemic and local levels of immunoglobulins and identify potential biomarkers in house dust mite (HDM) allergic rhinitis (AR) patients who are undergoing subcutaneous ...
Xu Xu, Jingyun Li, Xu Zhang, Yu Song, Lin Xi, Luo Zhang, Yuan Zhang   +6 more
wiley   +1 more source