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Cardoso,Sara Santos; Guimarães,Marcelo de Almeida; Lemos Neto,Hozano de Souza; Tello,Jean Paulo de Jesus; DoVale,Júlio César. |
ABSTRACT Lettuce is considered a crop of mild climate and its production in regions of low altitude and latitude is impaired due to the high temperatures and the predominance of long days. Therefore, the aim of this study was to evaluate the behavior of lettuce cultivars in such conditions. An experiment was conducted at the Horta Didática of the Federal University of Ceará, Campus do Pici, in Fortaleza. Nine lettuce cultivars from three commercial groups were used and distributed in a randomized block design, with four replications. The following qualitative traits were evaluated: bolting, head formation, leaf texture, anthocyanin and phytosanitary status for pest and disease infestation. Regarding the quantitative traits, plant height, plant diameter,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa L.; Bolting; Yield; Commercial groups. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400644 |
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Guimarães,Marcelo de Almeida; Loureiro,Marcelo Ehlers; Salt,David Edward. |
Noccaea caerulescens (J. & C. Presl) F. K. Mey (Brassicaceae) is a plant widely used in studies of the high accumulation of such metals as Cd, Ni, and Zn. Considered a biennial species, propagated mainly by seed, it presents a long period for the generation of new individuals, which significantly hampers the development of new studies of this species. Based on the above, the objective of this work was to develop a protocol to induce early flowering and abundant seed-production in N. caerulescens. Plants of this species were therefore grown and developed in a controlled environment (growth room and cold chamber), and then submitted to different treatments composed of combinations of the following environmental conditions: photoperiod (8 or 12 hour... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thlaspi caerulescens (J. & C. Presl) GA3 Main cluster Seed production Vernalization. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000400021 |
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Lemos Neto,Hozano de Souza; Torres,Rebeca de Araújo; Dantas,Lydio Luciano de Gois Ribeiro; Xavier,Cícera Vanuza Viana; Guimarães,Marcelo de Almeida; Takane,Roberto Jun. |
ABSTRACT The aim of this study was to evaluate the development of Chinguensai (Brassica pekinensis L.) seedlings, under different formulations of substrates and sizes of containers, in Fortaleza, Ceará. For this, two studies were conducted in factorial design with randomized blocks and four replicates. The first study was conducted in a factorial (4 × 4) design. Four substrate formulations (powder-type coconut fiber; carbonized rice hull and earthworm casting) had the following proportions: S1 (1:1:1); S2 (0:1:1); S3 (1:0:1); and S4 (0:0:1) by volume basis (v/v) and four evaluation dates (22, 27, 34 and 41 days after sowing — DAS). The second study was conducted in a factorial (3 × 4) design with three types of containers with different cell volumes (31,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evaluation dates; Earthworm casting; Cell size. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000300344 |
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