Results 21 to 30 of about 464,770 (268)

The role of cytokinins during micropropagation of wych elm

open access: yesBiologia Plantarum, 2013
We have compared the influence of two aromatic cytokinin derivatives, N 6-benzyladenine (BA) and meta-topolin (mT), on the in vitro multiplication and senescence of wych elm (Ulmus glabra Huds.).
J. Malá   +8 more
doaj   +1 more source

GROWTH-REGULATING FACTORS Interact with DELLAs and Regulate Growth in Cold Stress [PDF]

open access: yesThe Plant Cell, 2020
DELLA proteins are repressors of the gibberellin (GA) hormone signaling pathway that act mainly by regulating transcription factor activities in plants. GAs induce DELLA repressor protein degradation and thereby control a number of critical developmental processes as well as responses to stresses such as cold.
Ourania Lantzouni   +3 more
openaire   +3 more sources

Auxin-mediated seed germination and crosstalk with other phytohormones

open access: yesFrontiers in Plant Science
Seed germination is a critical and highly regulated process that transitions a dormant seed to an actively growing seedling. This process plays a vital physiological role in regulating seedling establishment, plant growth, and development, while ...
Anita Ament   +10 more
doaj   +1 more source

Homozygous Transgenic Barley (Hordeum vulgare L.) Plants by Anther Culture

open access: yesPlants, 2020
Production of homozygous lines derived from transgenic plants is one of the important steps for phenotyping and genotyping transgenic progeny. The selection of homozygous plants is a tedious process that can be significantly shortened by androgenesis ...
Ludmila Ohnoutková, Tomáš Vlčko
doaj   +1 more source

The Regulation of Pubertal Growth [PDF]

open access: yesHormone Research in Paediatrics, 2003
To understand the regulation of pubertal growth, it is important to understand the present concept of the control of the onset of puberty, the change in secretion of sex steroids during puberty, and the effects of these various factors upon the production and action of growth hormone (GH) and insulin-like growth factor (IGF).
openaire   +2 more sources

Innovative UAV LiDAR Generated Point-Cloud Processing Algorithm in Python for Unsupervised Detection and Analysis of Agricultural Field-Plots

open access: yesRemote Sensing, 2021
The estimation of plant growth is a challenging but key issue that may help us to understand crop vs. environment interactions. To perform precise and high-throughput analysis of plant growth in field conditions, remote sensing using LiDAR and unmanned ...
Michal Polák   +5 more
doaj   +1 more source

Hormonal crosstalk controls cell death induced by kinetin in roots of Vicia faba ssp. minor seedlings

open access: yesScientific Reports, 2023
Studies of vitality/mortality of cortex cells, as well as of the concentrations of ethylene (ETH), gibberellins (GAs), indolic compounds/auxins (ICs/AUXs) and cytokinins (CKs), were undertaken to explain the hormonal background of kinetin (Kin)-regulated
Andrzej Kaźmierczak   +4 more
doaj   +1 more source

Cytokinin availability and chloroplast functional lifetime in senescing leaves

open access: yesFrontiers in Plant Science
Leaf senescence is often characterized by visible yellowing, reflecting the degradation of photosynthetic pigments and the functional deterioration of photosynthetic complexes, marking a shift from photosynthetic maintenance to nutrient remobilization ...
Veronika Kábrtová   +9 more
doaj   +1 more source

Quantification of karrikins in smoke water using ultra-high performance liquid chromatography–tandem mass spectrometry

open access: yesPlant Methods, 2019
Background Karrikins (KARs) are plant growth regulators that promote seed germination and the subsequent growth and development of seedlings of many plant species.
Jakub Hrdlička   +6 more
doaj   +1 more source

Synthesis of Gibberellic Acid Derivatives and Their Effects on Plant Growth

open access: yesMolecules, 2017
A series of novel C-3-OH substituted gibberellin derivatives bearing an amide group were designed and synthesized from the natural product gibberellic acid (GA3).
Hao Tian   +6 more
doaj   +1 more source

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