Results 21 to 30 of about 109,508 (308)

The Role of Manipulating Photoperiod and Temperature in Oocyte Development of the Polychaete Hediste diversicolor (O.F. Müller, 1976)

open access: yesFrontiers in Marine Science, 2020
Three different experiments were conducted to examine the oocyte development of the polychaete Hediste diversicolor in response to changing photoperiod and temperature at three different periods of oogenesis.
Haiqing Wang   +8 more
doaj   +1 more source

Attainment of reproductive competence, phase transition, and quantification of juvenility in mutant genetic screens [PDF]

open access: yes, 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.   +2 more
core   +1 more source

Short photoperiod-induced decrease of histamine H3 receptors facilitates activation of hypothalamic neurons in the Siberian Hamster [PDF]

open access: yes, 2009
Nonhibernating seasonal mammals have adapted to temporal changes in food availability through behavioral and physiological mechanisms to store food and energy during times of predictable plenty and conserve energy during predicted shortage.
Bartness, Timothy J.   +7 more
core   +1 more source

The effect of photoperiod and high fat diet on the cognitive response in photoperiod-sensitive F344 rats [PDF]

open access: yes, 2021
YesIn many species, seasonal changes in day length (photoperiod) have profound effects on physiology and behavior. In humans, these include cognitive function and mood.
Tedder, Andrew   +3 more
core   +1 more source

A photoperiod-responsive protein compendium and conceptual proteome roadmap outline in maize grown in growth chambers with controlled conditions. [PDF]

open access: yesPLoS ONE, 2017
Maize (Zea mays L.) is one of the major staple food crops of the world. However, high photoperiod sensitivity, especially for tropical germplasms, impedes attempts to improve maize agronomical traits by integration of tropical and temperate maize ...
You-Zhi Li   +3 more
doaj   +1 more source

Photoperiodic Programming of the SCN and Its Role in Photoperiodic Output [PDF]

open access: yesNeural Plasticity, 2018
Though the seasonal response of organisms to changing day lengths is a phenomenon that has been scientifically reported for nearly a century, significant questions remain about how photoperiod is encoded and effected neurobiologically. In mammals, early work identified the master circadian clock, the suprachiasmatic nuclei (SCN), as a tentative encoder
Michael C. Tackenberg   +1 more
openaire   +3 more sources

Effect of Feed Restriction and Photoperiod on Reproduction and LEPR, MELR mRNA Expression of Layers [PDF]

open access: yesBrazilian Journal of Poultry Science, 2019
Photoperiod and nutrition are major factors that affect the reproductive efficiency particularly in female animals. In this study we examined the interaction of photoperiod and food restriction on growth, sexual maturation and receptor mRNA expressions ...
E HAO, H Chen, S Ge, R Huang
doaj   +1 more source

EFFECT OF LIGHTING DURATION ON REPRODUCTIVE PERFORMANCE OF RABBITS [PDF]

open access: yesJournal of Animal and Poultry Production, 2008
A total number of 36 females and 12 males of New Zealand White rabbits were used in this study to investigate the effect of different lighting period on reproductive performance of female rabbits.
A. Ismail   +3 more
doaj   +1 more source

Varietal diversity of Sri Lankan traditional rice based on sensitivity to temperature and photoperiod at vegetative stage [PDF]

open access: yes, 2019
Photoperiod and temperature are two important environmental factors affecting vegetative growth and yield of rice. The varietal diversity based on the response to temperature and photoperiod during vegetative growth was determined in a core collection of
Seneweera, Saman   +3 more
core   +1 more source

Effects of intermittent lighting on broiler growth performance, slaughter performance, serum biochemical parameters and tibia parameters

open access: yesItalian Journal of Animal Science, 2015
The objective of this study was to investigate the effects of intermittent lighting (IL) on broiler growth and slaughter performance as well as serum biochemical and tibia parameters.
Haiming Yang   +6 more
doaj   +1 more source

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