Results 41 to 50 of about 5,532,760 (378)

From Achievements to New Possibilities

open access: yes, 2006
It’s the year of Jubilation.The ACL has been in existence for fifty years now. The first meeting of the Christian Librarians’ Fellowship was held at Columbia Bible College (now Columbia International University) in 1956.
Root, Clyde R.
core   +1 more source

Modelling diverse root density dynamics and deep nitrogen uptake — a simple approach [PDF]

open access: yes, 2009
We present a 2-D model for simulation of root density and plant nitrogen (N) uptake for crops grown in agricultural systems, based on a modification of the root density equation originally proposed by Gerwitz and Page in J Appl Ecol 11:773–781, (1974). A
A Bloom   +39 more
core   +1 more source

Calcium and Calmodulin Involve in Mycorrhizal and Root Development in Trifoliate Orange Colonized by Rhizophagus intraradices

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2014
A pot experiment was made to study effects of ethylene glycol tetraacetic acid (EGTA, an inhibitor of Ca2+) and trifluoperazine (TFP, an inhibitor of calmodulin (CaM) on mycorrhizal colonization, growth performance, and chlorophyll, sucrose and glucose ...
Qiang-Sheng WU   +3 more
doaj   +1 more source

SNARE VTI13 plays a unique role in endosomal trafficking pathways associated with the vacuole and is essential for cell wall organization and root hair growth in arabidopsis [PDF]

open access: yes, 2014
Background and Aims: Root hairs are responsible for water and nutrient uptake from the soil and their growth is responsive to biotic and abiotic changes in their environment.
Domozych, David S.   +2 more
core   +1 more source

"GALVANOTROPISM" OF ROOTS [PDF]

open access: yesJournal of General Physiology, 1927
1. New experiments, made in such a way to eliminate as completely as possible products of polarization and the migration of such products when formed, have shown that the exhibition of galvanotropic curvature in roots is mainly dependent upon such products, since no curvature appears when they are excluded. 2.
openaire   +3 more sources

Combining transient dynamics and logistic‐asymptotic growth to study the recovery of two seabird populations after rat eradication

open access: yesPopulation Ecology, EarlyView.
This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier   +6 more
wiley   +1 more source

Zinc Influences Regeneration of Talinum portulacifolium Stem Cuttings in Nutrient Solution

open access: yesNotulae Scientia Biologicae, 2018
Zinc (Zn) is an essential micronutrient for plant growth and development, but toxic at high concentrations. The present study focused to underline the direct effect of different concentrations (0-50 ppm) of Zn on the regeneration ability and ...
Thangavelu MUTHUKUMAR   +2 more
doaj   +1 more source

Rhizosphere microbiome mediates systemic root metabolite exudation by root-to-root signaling

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Root exudation of metabolites is an important mediator of plant interactions with soil microbes. Here we demonstrate that the tomato rhizosphere microbiome affects the chemical composition of root exudation through a systemic root–root ...
Elisa Korenblum   +8 more
semanticscholar   +1 more source

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

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