Results 11 to 20 of about 80,118 (189)
Plants, 2021 Trees have a distinctive and generally long juvenile period during which vegetative growth rate is rapid and floral organs do not differentiate. Among trees, the juvenile period can range from 1 year to 15–20 years, although with some forest tree species,
Isabel Vidoy-Mercado +5 more
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Juvenile phase: an important phase of the life cycle in plants
Ornamental Plant Research, 2023 The juvenile phase of plants refers to the period from seed germination to the period in which they gain flowering ability. The phase is vital for the breeding of new plant varieties, the study of plant stress and immune responses, and the utilization of
Tianqi Pan, Xinyue Fan, Hongmei Sun
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Gonadotropins in the Russian Sturgeon: Their Role in Steroid Secretion and the Effect of Hormonal Treatment on Their Secretion. [PDF]
, 2016 In the reproduction process of male and female fish, pituitary derived gonadotropins (GTHs) play a key role. To be able to specifically investigate certain functions of Luteinizing (LH) and Follicle stimulating hormone (FSH) in Russian sturgeon ...
Aizen, Joseph +8 more
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Hormones as adaptive control systems in juvenile fish
Biology Open, 2020 Growth is an important theme in biology. Physiologists often relate growth rates to hormonal control of essential processes. Ecologists often study growth as a function of gradients or combinations of environmental factors.
Jacqueline Weidner +4 more
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Role of Endocrine System in the Regulation of Female Insect Reproduction
Biology, 2021 The proper synthesis and functioning of ecdysteroids and juvenile hormones (JHs) are very important for the regulation of vitellogenesis and oogenesis.
Muhammad Zaryab Khalid +3 more
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Attainment of reproductive competence, phase transition, and quantification of juvenility in mutant genetic screens [PDF]
, 2014 Plant development between seedling emergence and flowering is characterized by a series of successive qualitative phases: (1) a post embryonic photoperiodinsensitive phase, during which plants are insensitive to photoperiod; (2) a photoperiod ...
Matsoukas, Ioannis G.
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Sex-change chemicals and their influence on the brain. [PDF]
, 2001 The potential for man-made chemicals to mimic or antagonise natural hormones is a controversial issue, but one for which increasing amounts of evidence are being gathered worldwide.
Harris, CA
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Neurohormones in insect stress: A review [PDF]
Archives of Biological Sciences, 2006 The neurohormones are the master regulators of all life processes in insects and they create a strategy of stress protecting events. Neurohormones are synthesized mainly in insect brain neurosecretory neurons.
Perić-Mataruga Vesna +2 more
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Four-way regulation of mosquito yolk protein precursor genes by juvenile hormone-, ecdysone-, nutrient-, and insulin-like peptide signaling pathways. [PDF]
, 2014 Anautogenous mosquito females require a meal of vertebrate blood in order to initiate the production of yolk protein precursors by the fat body. Yolk protein precursor gene expression is tightly repressed in a state-of-arrest before blood meal-related ...
Attardo, Geoffrey M +3 more
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Insects, 2023 Response to short-term stress is a fundamental survival mechanism ensuring protection and adaptation in adverse environments. Key components of the neuroendocrine stress reaction in insects are stress-related hormones, including biogenic amines (dopamine
Margarita A. Bobrovskikh +1 more
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