Stunt
Mostrando 1-12 de 90 artigos, teses e dissertações.
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1. Viróides em citros no Estado do Rio de Janeiro
RESUMO Os viróides infectam plantas de grande importância econômica como os citros. Objetivando detectar a presença de viróides através de métodos moleculares em árvores cítricas, cinco propriedades em Araruama, no Estado do Rio de Janeiro foram avaliadas. Vinte e duas amostras foram coletadas a partir de plantas com nanismo, rachadura no tronco e e
Summa phytopathol.. Publicado em: 2020-06
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2. Incidence of corn stunt disease in off-season corn hybrids in different sowing seasons
Resumo: O objetivo deste trabalho foi avaliar a incidência de enfezamentos e os seus efeitos na produtividade de híbridos de milho (Zea mays) safrinha em diferentes épocas de semeadura. O experimento foi conduzido em três locais no Estado do Tocantins, em épocas de semeadura distintas, em delineamento experimental de blocos ao acaso, com 30 híbridos (t
Pesq. agropec. bras.. Publicado em: 02/12/2019
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3. Driving upside-down in a circular track
Abstract In this article, we point out an interesting solution for the dynamics of a racecar in a banked circular track with banking angle well over 90°. We call this track configuration an Inverted Track, at which a racecar can drive partially upside-down. We show an experimental setup, where we made a toy car to circulate upside-down held only by its fric
Rev. Bras. Ensino Fís.. Publicado em: 30/09/2019
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4. Identification and characterization of viroids in 'Navelina ISA 315' sweet orange
To date, seven species of viroids have been described infecting Citrus. However, only Citrus exocortis viroid (CEVd), Hop stunt viroid (HSVd) and Citrus dwarfing viroid (CDVd) have been reported in this crop in Brazil. The aim of our work was to identify and characterize viroids infecting plants of 'Navelina ISA 315' sweet orange cultivar grafted on 'Rangpur
Trop. plant pathol.. Publicado em: 2013-02
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5. Pré-melhoramento de milho quanto à resistência a enfezamentos
O objetivo deste trabalho foi selecionar famílias de milho derivadas do retrocruzamento entre o composto "NAP Corn Stunt" (genitor doador) e linhagens-elite (genitores recorrentes), quanto à produtividade de grãos e à resistência a enfezamentos, e avaliar a eficiência do emprego de marcadores moleculares para avaliação fenotípica na seleção de gen
Pesq. agropec. bras.. Publicado em: 2013-01
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6. Resistência do milho ao enfezamento causado por espiroplasma e ao enfezamento causado por fitoplasma.
2010
CONGRESSO NACIONAL DE MILHO E SORGO. Publicado em: 2011
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7. Genetic variability of Brazilian phytoplasma and spiroplasma isolated from maize plants.
The objective of this work was to characterize the genetic variability of phytoplasma and Spiroplasma kunkelii isolated from maize plants showing symptoms of stunt collected from different Brazilian geographic regions. A DNA fragment of 500 base pairs (bp) was amplified from the spiralin gene in S. kunkelii and one fragment of 1,200 bp was generated from 16S
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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8. Viroids in Tahiti lime scions showing back cracking symptoms.
The so-called "quebra-galho" clone of Tahiti lime is very popular in Brazil, because the small size of the trees is suitable for high-density plantings. These Tahiti lime trees are easily recognized because they show bark-cracking symptoms, that have been claimed to be associated with "exocortis" infection. Viroid infection of three "quebra-galho" Tahiti lim
CONFERENCE OF THE INTERNATIONAL ORGANIZATION OF CITRUS VIROLOGISTS. Publicado em: 2011
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9. Incidência de viroses e enfezamentos e estimativa de perdas causadas por molicutes em milho no Paraná.
O objetivo deste trabalho foi avaliar a incidência de viroses e enfezamentos e estimar as perdas causadas por enfezamentos na cultura do milho safrinha. Os diagnósticos baseados em sintomas foram confirmados por PCR ou RT-PCR. Em todas as lavouras, foram identificadas plantas com sintomas de enfezamentos, em incidência de 6,2% a 49,9% (média de 20,7%). N
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Heterosis in crosses among white grain maize populations with high quality protein.
The objective of this work was to investigate heterosis and its components in 16 white grain maize populations presenting high quality protein. These populations were divided according to grain type in order to establish different heterosis groups. The crosses were carried out according to a partial diallel cross design among flint and dent populations. Seve
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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11. Heterosis in crosses among white grain maize populations with high quality protein.
The objective of this work was to investigate heterosis and its components in 16 white grain maize populations presenting high quality protein. These populations were divided according to grain type in order to establish different heterosis groups. The crosses were carried out according to a partial diallel cross design among flint and dent populations. Seve
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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12. Potenciais hospedeiros alternativos para o fitoplasma e o espiroplasma, agentes do enfezamento do milho, e alterações bioquímicas em plantas infectadas pelo espiroplasma / Potencial hosts for maize mollicutes, agent of corn stunt, and biochemical changes in plants infected by the spiroplasma
The maize bushy stunt and corn stunt are relevant diseases caused, respectively, by a phytoplasma and a spiroplasma (Spiroplasma kunkelii). Both kinds of stunting were reported in Brazil in the beginning of the 1970´s and became economically important in the beginning of the 1980´s, with the adoption of new techniques for maize cultivation. Although this p
Publicado em: 2010