Results 31 to 40 of about 3,654 (216)

Biological traits and life table parameters A and B biotype of Bemisia tabaci (Genn.) on cotton and rapeseed [PDF]

open access: yes, 2014
The aim of this work was to construct life table of Bemisia tabaci (Gen.) A and B (silverleaf whitefly B. argentifolii Bellows and Perring) biotype (Hem.: Aleyrodidae) on two host plants; cotton, (Gossypium hirsutum L.) and rapeseed, (Brassica napus L.).
Rouhani, M.   +3 more
core   +1 more source

Can Brisbane remain a sub-tropical city? [PDF]

open access: yes, 2003
As the seasons change, public and private gardens become a riot of colour. Winter shows the scarlet flags of poinsettia – Brisbane's emblem, which, if really a Mexican beauty, has made itself very much at home. The lavender glow of jacaranda and the gold
Spearritt, Peter
core   +1 more source

Phytotoxic effects of metabolites from Alternaria euphorbiicola against its host plant Euphorbia heterophylla

open access: yesQuímica Nova, 2013
A bioassay-guided fractionation of culture filtrates of the fungus Alternaria euphorbiicola, a pathogen of the weed Euphorbia heterophylla, led to the isolation of anhydromevalonolactone (1), tyrosol (2), (R)-( - )-mevalonolactone (3), and ...
Eduardo Vinícius Vieira Varejão   +3 more
doaj   +1 more source

Comparative analysis for quantification of Citrus Variegated Chlorosis in the field [PDF]

open access: yes, 2011
Citrus Variegated Chlorosis (CVC) caused by Xylella fastidiosa is one of the most important diseases for Brazilian citriculture. The CVC is a vascular disease with a long incubation period and symptoms similar to other disorders, and this factors ...
AMORIM, Lilian   +4 more
core   +4 more sources

Primary and secondary abscission in Pisum sativum and Euphorbia pulcherrima –how do they compare and how do they differ?

open access: yesFrontiers in Plant Science, 2016
Abscission is a highly regulated and coordinated developmental process in plants. It is important to understand the processes leading up to the event, in order to better control abscission in crop plants.
Anne Kathrine (Trine) eHvoslef-Eide   +8 more
doaj   +1 more source

Influence of leaf trichome type, and density on the host plant selection by the greenhouse whitefly, Trialeurodes vaporariorum (Hemiptera: Aleyrodidae) [PDF]

open access: yes, 2014
Host selection by adult greenhouse whitefly Trialeurodes vaporariorum (Westwood) was assessed on two pelargonium plant cultivars, Pelargonium x domesticum (regal) and P. x hortorum (zonal) using Petri dish bioassay chambers in choice and no-choice tests.
AH Medeiros   +46 more
core   +1 more source

Resposta de biótipos de Euphorbia heterophylla a doses de glyphosate Response of Euphorbia heterophylla biotypes to glyphosate rates

open access: yesPlanta Daninha, 2011
A leiteira (Euphorbia heterophylla) é uma planta daninha de ciclo anual encontrada com frequência em lavouras de soja na região Sul do Brasil, controlada em lavouras de soja geneticamente modificada (Roundup Ready® - RR) com uso do herbicida glyphosate ...
L Vargas   +5 more
doaj   +1 more source

Acetolactate synthase activity in Euphorbia heterophylla resistant to ALS- and protox- inhibiting herbicides [PDF]

open access: yesPlanta Daninha, 2013
The objective of this study was to determine the activity of the enzyme acetolactate synthase in biotypes of wild poinsettia (Euphorbia heterophylla) with multiple resistance to ALS- and Protox- inhibitors in the presence and absence of imazapyr ...
E. Xavier   +6 more
doaj   +1 more source

Toxic plants and companion animals. [PDF]

open access: yes, 2009
Poisoning by substances of plant origin is unusual in both dogs and cats, yet it is possible; as many veterinarians do not know which plants can contain toxic active principles, the possibility of intoxication by ornamental plants commonly used to ...
SEVERINO, LORELLA
core   +1 more source

Efeito alelopático de Artemisia annua L. na germinação e desenvolvimento inicial de plântulas de alface (Lactuca sativa L.) e leiteiro (Euphorbia heterophylla L.) Allelopathic effect of Artemisia annua L. on the germination and initial development of lettuce (Lactuca sativa L.) and wild poinsettia (Euphorbia heterophylla L.) seedlings

open access: yesRevista Brasileira de Plantas Medicinais, 2009
O objetivo do presente trabalho foi caracterizar o efeito alelopático do extrato aquoso de folhas de A. annua sobre a germinação de sementes e o desenvolvimento de plântulas de alface (Lactuca sativa L.) e leiteiro (Euphorbia heterophylla L.).
E.C. Magiero   +5 more
doaj   +1 more source

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