Results 31 to 40 of about 58,703 (187)

Approaches to Modeling Potato Leaf Appearance Rate [PDF]

Agronomy Journal, 2006
Two approaches quantifying potato (Solanum tuberosum L. cv. Kennebec) leaf appearance rates were evaluated: a thermal time approach using the phyllochron, and a nonlinear temperature response approach using a modified β distribution function. Leaf appearance measurements at six temperature treatments (14/10, 17/12, 20/15, 23/18, 28/23, and 34/29°C ...
David H. Fleisher, Rose M. Shillito, Dennis J. Timlin, Soo‐Hyung Kim, Vangimalla R. Reddy   +4 more
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Alterations in Grapevine Leaf Metabolism Occur Prior to Esca Apoplexy Appearance [PDF]

Molecular Plant-Microbe Interactions®, 2017
Esca disease is one of the major grapevine trunk diseases in Europe and the etiology is complex, since several inhabiting fungi are identified to be associated with this disease. Among the foliar symptom expressions, the apoplectic form may be distinguished and characterized by sudden dieback of shoots, leaf drop, and shriveling of grape clusters in a
Magnin-Robert, Maryline, Adrian, Marielle, Trouvelot, Sophie, Spagnolo, Alessandro, Jacquens, Lucile, Letousey, Patricia, Rabenoelina, Fanja, Harir, Mourad, Roullier-Gall, Chloé, Clément, Christophe, Schmitt-Kopplin, Philippe, Vallat, Armelle, Abou-Mansour, Eliane, Fontaine, Florence   +13 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
doaj   +1 more source

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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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

Métodos de soma térmica e datas de semeadura na determinação de filocrono de cultivares de trigo Thermal time methods and sowing dates in phyllochron determination in wheat cultivars

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi avaliar o efeito dos métodos de cálculo de graus-dia e de datas de semeadura na determinação do filocrono de cultivares de trigo (Triticum aestivum).
Hamilton Telles Rosa, Lidiane Cristine Walter, Nereu Augusto Streck, Cleber Maus Alberto   +3 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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Improving predictions of leaf appearance in field grown potato [PDF]

Scientia Agricola, 2007
The calculation of leaf appearance rate (LAR) and number of accumulated or emerged leaves (NL) on the main stem are part of many crop simulation models. The purpose of this study was to adapt and evaluate a model (WE model) for simulating the main stem LAR and NL in potato (Solanum tuberosum L.).
Streck, Nereu Augusto, Lago, Isabel, Paula, Fabiana Luiza Matielo de, Bisognin, Dilson Antônio, Heldwein, Arno Bernardo   +4 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 rate and phyllochron on millet sowing dates

REVISTA BRASILEIRA DE MILHO E SORGO, 2023
The objective of this study was to determine the leaf appearance rate and phyllochron as affected by millet sowing dates. The experiment was conducted with six sowing dates (11/28/2019, 12/03/2019, 12/10/2019, 12/17/2019, 12/30/2019 and 01/14/2020). The sowing was performed in plots with six rows of 2 m length and spacing of 0.25 m between rows.
Felipe Manfio Somavilla, Alberto ​Cargnelutti Filho, Ismael Mario Márcio Neu, Daniela Lixinski Silveira, Valéria Escaio Bubans, Gabriel Elias Dumke   +5 more
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