Results 41 to 50 of about 1,296,059 (287)

Quantification of Tobacco Leaf Appearance Quality Index Based on Computer Vision

IEEE Access, 2022
The appearance quality index of tobacco leaves is widely used in the tobacco industry. But in national standards for flue-cured tobacco, the specified indicators only have qualitative descriptions, and a few have a range of quantitative values, lacking quantitative calculation methods, which affects the effective use of these indicators in tobacco ...
Tiannan Wu, Yunwei Zhang, Zewu Gong, Dongfeng Lu   +3 more
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Crescimento, desenvolvimento e retardamento da senescência foliar em girassol de vaso (Helianthus annuus L.): fontes e doses de nitrogênio Growth, development and delay of leaf senescence in pot-grown sunflower (Helianthus annuus L.): sources and rates of nitrogen

Ciência Rural, 2007
O girassol é a quarta oleaginosa em produção de grãos no mundo e alguns genótipos são usados com finalidade ornamental para flor de corte e de vaso (girassol de vaso). O objetivo do trabalho foi avaliar o efeito de diferentes fontes e doses de nitrogênio
Joelma Dutra Fagundes, Gisele Santiago, Anderson Machado de Mello, Rogério Antônio Bellé, Nereu Augusto Streck   +4 more
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CO2Effects on Phasic Development, Leaf Number and Rate of Leaf Appearance in Wheat [PDF]

Annals of Botany, 1997
It has been predicted that the concentration of CO2in the air could double during the 21st century. Though it is recognized that CO2-doubling could increase yield through its effects on plant photosynthesis and stomatal behaviour, it is unclear whether CO2-doubling will change phasic development in wheat.
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Phyllochron of Paspalum notatum FL. and Coelorhachis selloana (HACK.) camus in natural pasture Filocrono de Paspalum notatum FL. e Coelorhachis selloana (HACK.) camus em pastagem natural

Scientia Agricola, 2004
Leaf appearance rate and phyllochron are related variables which play a central role in forage production. Phyllochron is the time interval between the appearance of successive leaves and varies according to a number of environmental factors, among which
Lilian Eggers, Mónica Cadenazzi, Ilsi Iob Boldrini   +2 more
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A successive time-to-event model of phyllochron dynamics for hypothesis testing: application to the analysis of genetic and environmental effects in maize

Plant Methods, 2023
Background The time between the appearance of successive leaves, or phyllochron, characterizes the vegetative development of annual plants. Hypothesis testing models, which allow the comparison of phyllochrons between genetic groups and/or environmental ...
Sandra Plancade, Elodie Marchadier, Sylvie Huet, Adrienne Ressayre, Camille Noûs, Christine Dillmann   +5 more
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Leaf Appearance in Cowpea: Effects of Temperature and Photoperiod

Crop Science, 1997
Leaf appearance in crop plants is an important process involved in canopy development. The environmental control of leaf appearance has not been studied in cowpea [Vigna unguiculata (L.) Walp.]. This study was conducted to determine whether photoperiod has any effect on the rate of leaf appearance (RLA) and to determine the phyllochron and its base ...
Craufurd, Peter Q., Subedi, M., Summerfield, R.J.   +2 more
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Incorporating a Chronology Response into the Prediction of Leaf Appearance Rate in Winter Wheat [PDF]

Annals of Botany, 2003
The prediction of leaf appearance rate (LAR) is an important part of many crop simulation models. Most wheat simulations models assume that LAR is affected by temperature and photoperiod. This assumption ignores the fact that seed reserves contribute to a greater LAR of the first two leaves and that the LAR of subsequent leaves decreases as a result of
Nereu Augusto, Streck, Albert, Weiss, Q, Xue, P Stephen, Baenziger   +3 more
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Development and validation of the Sociocultural Attitudes Towards Appearance Questionnaire-4 (SATAQ-4) [PDF]

, 2015
The Sociocultural Attitudes Towards Appearance Questionnaire-3 (SATAQ-3) and its earlier versions are measures designed to assess societal and interpersonal aspects of appearance ideals.
Allison C Vercellone (16221866), Susan J Paxton (9624692), Vercellone, Allison, Klump, Kelly, Lauren M Shaefer (16221824), Dittmar, Helga, Dedrick R, F., Klump, Kelly L., Schaefer, Lauren M., Vercellone A, C., Calogero, Rachel, Elizabeth Clark (6967604), Katherine Schaumberg (16221857), Macwana, Susan, Paxton, Susan, Clark, L., Frederick, David, Burke, Natasha L., Thompson, J. Kevin, Dedrick, Robert F., Clark, Elizabeth, David A Frederick (16221848), Swami, V., Susan Macwana (12750803), Viren Swami (299006), Robert F Dedrick (16221833), Schaefer L, M., Kelly, M., Heinberg, Leslie, Rachel M Calogero (16221839), Mary K Higgins (16221845), Natasha L Burke (16221827), Leslie J Heinberg (16221836), Burke, Natasha, Heinberg, Leslie J., Anderson D, A., Higgins, Mary, Schaefer, Lauren, Higgins M, K., Macwana, S., Amanda Nerini (16221860), Vercellone, Allison C., Dedrick, Robert, Mackenzie Kelly (16221851), Drew A Anderson (16221854), Paxton, Susan J., Swami, Viren, Nerini, Amanda, Bardone-Cone A, M., Burke N, L., Frederick, David A., Klump K, L., J Kevin Thompson (16221830), Adams, Z., Bardone-Cone, Anna, Schaumberg, K., Paxton S, J., Dittmar, H., Higgins, Mary K., Helga Dittmar (4460374), Kelly L Klump (13593205), Stefanile, Cristina, Frederick D, A., Heinberg L, J., Anderson, Drew A., Zoe Adams (16221863), Adams, Zoe, Thompson J, K., Bardone-Cone, Anna M., Cristina Stefanile (16055348), Anderson, Drew, Schaumberg, Katherine, Anna M Bardone-Cone (16221842), Kelly, Mackenzie, Calogero, Rachel M.   +74 more
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Emissão e expansão foliar em três genótipos de tomateiro (Lycopersicon esculentum Mill.) Leaf emergence and expansion in three tomato (Lycopersicon esculentum Mill.) genotypes

Ciência Rural, 2007
O objetivo deste trabalho foi estimar o filocrono na haste principal e em hastes laterais de primeira ordem e estimar a área foliar a partir do número de folhas em três genótipos de tomateiro cultivados em estufa plástica. Um experimento foi conduzido em
Carina Rejane Pivetta, Ivonete Fatima Tazzo, Guilherme Fabiano Maass, Nereu Augusto Streck, Arno Bernardo Heldwein   +4 more
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Impact of elevated temperature scenarios on potato leaf development Impacto de cenários de aumento de temperatura no desenvolvimento foliar da batata

Engenharia Agrícola, 2012
The objective of this study was to simulate the impact of elevated temperature scenarios on leaf development of potato in Santa Maria, RS, Brazil. Leaf appearance was estimated using a multiplicative model that has a non-linear temperature response ...
Nereu A. Streck, Lilian O. Uhlmann, Alencar J. Zanon, Dilson A. Bisognin   +3 more
doaj   +1 more source