Results 41 to 50 of about 1,233,302 (284)

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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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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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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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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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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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
doaj   +1 more source

Leaf appearance of annual clovers responds to photoperiod at emergence [PDF]

European Journal of Agronomy, 2016
Abstract Leaf appearance rate and time to canopy expansion of four annual clover species (arrowleaf, balansa, gland and Persian) were quantified in field and controlled environment studies. Crops sown in autumn, which experienced shortening daylengths at emergence, had a slower rate of leaf production and consequently took a longer time to initiate ...
H., Nori, D.J., Moot, A.D., Black
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The Physical Appearance Perfectionism Scale: Development and preliminary validation [PDF]

, 2011
Eight studies with data from 2316 students are presented describing the development and preliminary validation of the Physical Appearance Perfectionism Scale (PAPS), a brief measure with two subscales: Worry About Imperfection and Hope For Perfection ...
Stoeber, Joachim, Hongfei Yang, Yang, Hongfei, Joachim Stoeber   +3 more
core   +1 more source

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
doaj   +1 more source

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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