Results 41 to 50 of about 230,941 (392)
Chemical Variability of Hexane Extracts from Five Subspecies of Calendula suffruticosa from Spain
Chemistry &Biodiversity, Volume 19, Issue 12, December 2022., 2022 Abstract The chemical profile of the hexane extracts of the subspecies carbonellii, greuteri, marginata, trialata, and vejerensis of Calendula suffruticosa growing in Spain, herein described for the first time, were studied to access their value as a chemo taxonomical tool and search for potentially useful compounds. The subsp. greuteri and carbonellii
Silvana Ohse +5 more
wiley +1 more source
Frontiers 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
Longday Photoperiod Accelerates Flowering in Indonesian Non-Flowering Shallot Variety
AGRIVITA Journal of Agricultural Science, 2022 The shallot flowering ability is essential to increase productivity by assembling superior varieties through the hybridization and botanical seed or true shallot seed (TSS).
Fazat Fairuzia +4 more
doaj +1 more source
Endogenous circannual rhythm in LH secretion: insight from signal analysis coupled with mathematical modelling [PDF]
Philosophical Transactions of the Royal Society, Series A 367,
1908 (2009) 4759-4777, 2009 In sheep as in many vertebrates, the seasonal pattern of reproduction is timed by the annual photoperiodic cycle, characterized by seasonal changes in the daylength. The photoperiodic information is translated into a circadian profile of melatonin secretion. After multiple neuronal relays (within the hypothalamus), melatonin impacts GnRH (gonadotrophin
arxiv +1 more source
Journal of Comparative Neurology, Volume 531, Issue 2, Page 314-335, February 2023., 2023 The main objective of this work was to obtain detailed information on the distribution and localization of the spexin (Spx) system in the sea bass brain. To this purpose, we first identified and characterized the spx1 gene and analyzed its expression in the central nervous system (CNS) of the European sea bass by using quantitative Real‐Time Polymerase
José A. Paullada‐Salmerón +2 more
wiley +1 more source
Electronic Journal of Plant Breeding, 2019 Photoperiod responsive flowering and growth habit have played key role in evolution and domestication of Indian bean. Most of the land races of this crop exhibit photoperiod sensitive flowering and indeterminate growth habit.
Kaushal Modha +4 more
doaj +1 more source
Effect of Feed Restriction and Photoperiod on Reproduction and LEPR, MELR mRNA Expression of Layers [PDF]
Brazilian 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
Seasonal changes in moult, body mass and reproductive condition in siskins Carduelis spinus exposed to daylength regimes simulating different latitudes [PDF]
, 2011 Birds use change in daylength during the year to time events during their annual cycles. Individual Eurasian siskins Carduelis spinus can breed and winter in widely separated areas in different years.
Dawson, Alistair, Newton, Ian
core +2 more sources
A photoperiod-responsive protein compendium and conceptual proteome roadmap outline in maize grown in growth chambers with controlled conditions. [PDF]
PLoS 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
Seasonality and Photoperiodism in Fungi [PDF]
Journal of Biological Rhythms, 2001 This review gives a retrospective of what is known about photoperiodism in fungi, which is largely based on reports about seasonal spore concentrations. Relatively few species have been investigated under laboratory conditions, so that our knowledge whether seasonal reproduction in fungi is mainly a direct response to environmental conditions or ...
Martha Merrow, Till Roenneberg
openaire +3 more sources