Results 51 to 60 of about 26,159 (229)
Brazilian Journal of BiologyTemporary lakes are common in the semi-arid region of the State of Bahia and form water mirrors in the rainy season. In this period, various vegetal species appear having different life forms adapted to the seasonality conditions of the rainfall regime ...
KRB Leite, F França, VL Scatena
doaj +1 more source
Planta Daninha, 1999 O objetivo do presente trabalho foi determinar os teores de nutrientes (N, P, K, Ca, Mg, S, Cu, Zn, Fe e Mn) e a relação C/N, presentes na matéria seca da parte aérea das seguintes espécies de plantas daninhas: Ageratum conyzoides L., Amaranthus lividus ...
Luciano S. Souza +3 more
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Floral development and vascularization help to explain merism evolution in Paepalanthus (Eriocaulaceae, Poales) [PDF]
PeerJ, 2016 Background Flowers in Eriocaulaceae, a monocot family that is highly diversified in Brazil, are generally trimerous, but dimerous flowers occur in Paepalanthus and a few other genera.
Arthur de Lima Silva +2 more
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Distribution of sex forms in the phanerogamic flora [PDF]
, 2007 In the plant kingdom, particularly in the phanerogamic flora, hermaphroditism is by far the most common, yet the number of other sex forms is not negligible.
Yampolsky, Cecil, Yampolsky, Helene
core
Journal of the Science of Food and Agriculture, EarlyView.Abstract BACKGROUND Fusarium culmorum causes Fusarium head blight (FHB) in cereals, leading to significant yield losses and contamination with type B trichothecene mycotoxins such as deoxynivalenol (DON) and its acetylated derivatives 3‐ADON and 15‐ADON.
Safa Oufensou +8 more
wiley +1 more source
A new interpretation on vascular architecture of the cauline system in Commelinaceae (Commelinales).
PLoS ONE, 2019 The vascular system of monocotyledons, including Commelinaceae, has been studied since the 19th century, but to date, the proposed vascular architecture models consist of schematic representations partially based on the authors' interpretation.
Ricardo Sb Vita +3 more
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Microsporogenesis in Monocotyledons [PDF]
Annals of Botany, 1999 This paper critically reviews the distribution of microsporogenesis types in relation to recent concepts in monocot systematics. Two basic types of microsporogenesis are generally recognized: successive and simultaneous, although intermediates occur.
openaire +1 more source
Land Degradation &Development, EarlyView.ABSTRACT Lindane (γ‐hexachlorocyclohexane, γ‐HCH) is a broad‐spectrum pesticide widely used since the 1950s until its inclusion in the Stockholm Convention list of Persistent Organic Pollutants (POPs) in 2009, together with other HCH isomers. The high persistence and mismanagement of the toxic wastes generated during its synthesis have led to serious ...
Giuliana Oriana Morabito +4 more
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Weed management in winter wheat (Triticum aestivum L.) influenced by different soil tillage systems [PDF]
, 2013 In this study, weed management in winter wheat influenced by different soil tillage systems was investigated. The experiment was carried out under Mediterranean conditions on a Luvisol, during two growing seasons (1996/1997 and 1999/2000).
Barros, José +3 more
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Hechtia mixtecana sp. nov. (Hechtioideae; Bromeliaceae), from Oaxaca, Mexico
Nordic Journal of Botany, EarlyView.Botanical explorations carried out in the state of Oaxaca, Mexico, led to the discovery of a new Bromeliaceae: Hechtia mixtecana,which is here described and illustrated. The new taxon is compared with the morphologically similar Hechtia fragilis, Hechtia lyman‐smithii, and Hechtia minuta.
Rodrigo Alejandro Hernández‐ Cárdenas +4 more
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