Results 21 to 30 of about 464,770 (268)
The role of cytokinins during micropropagation of wych elm
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]
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
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
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]
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
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
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
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
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
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

