Tiller development and yield components in wheat genotypes under different seeding densities
The objective of this work was to determine the developmental pattern of tillers in wheat genotypes showing contrasting number of tillers. The genotypes were tested under different seeding densities, in order to evaluate their effect on grain yield components. The experiment was performed in Capão do Leão County, Rio Grande do Sul State, Brazil, in 2006. Ten wheat cultivars, selected by their tillering ability, were tested in a split plot design, where plots were formed by the genotype (cultivar), and subplots by different seeding densities: 50, 200, 350, 500 and 650 seeds per square meter. Results indicated that tiller senescence is directly correlated to tillering potential of the genotypes, and genotypes with higher tillering ability presented higher senescence values, when subjected to higher seeding densities. The best adjustment of yield components is obtained from the adequate seeding density, which can be achieved by matching the density and tillering potential. Also, higher yield in genotypes with reduced tillering potential is achieved by increasing grain mass per ear, to compensate for their lower number of ears per area unit.
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Digital revista |
| Language: | por |
| Published: |
Pesquisa Agropecuaria Brasileira
2008
|
| Online Access: | https://seer.sct.embrapa.br/index.php/pab/article/view/38 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
rev-pab-br-article-38 |
|---|---|
| record_format |
ojs |
| spelling |
rev-pab-br-article-382014-04-30T18:21:01Z Tiller development and yield components in wheat genotypes under different seeding densities Desenvolvimento de afilhos e componentes do rendimento em genótipos de trigo sob diferentes densidades de semeadura Valério, Igor Pirez Carvalho, Fernando Irajá Félix de Oliveira, Antonio Costa de Machado, Amauri de Almeida Benin, Giovani Scheeren, Pedro Luiz Souza, Velci Queiróz de Hartwig, Irineu Triticum aestivum; developing stages; tillering potential; senescence; tiller survival. Triticum aestivum; estádio de desenvolvimento; potencial de afilhamento; senescência; sobrevivência de afilhos. The objective of this work was to determine the developmental pattern of tillers in wheat genotypes showing contrasting number of tillers. The genotypes were tested under different seeding densities, in order to evaluate their effect on grain yield components. The experiment was performed in Capão do Leão County, Rio Grande do Sul State, Brazil, in 2006. Ten wheat cultivars, selected by their tillering ability, were tested in a split plot design, where plots were formed by the genotype (cultivar), and subplots by different seeding densities: 50, 200, 350, 500 and 650 seeds per square meter. Results indicated that tiller senescence is directly correlated to tillering potential of the genotypes, and genotypes with higher tillering ability presented higher senescence values, when subjected to higher seeding densities. The best adjustment of yield components is obtained from the adequate seeding density, which can be achieved by matching the density and tillering potential. Also, higher yield in genotypes with reduced tillering potential is achieved by increasing grain mass per ear, to compensate for their lower number of ears per area unit. O objetivo deste trabalho foi determinar o padrão de desenvolvimento de afilhos em genótipos de trigo contrastantes para esse caráter, em diferentes densidades de semeadura, bem como seus efeitos sobre os componentes do rendimento de grãos. O experimento foi conduzido no Município de Capão do Leão, RS, em 2006. Dez cultivares de trigo, selecionadas com base na capacidade de afilhamento, foram utilizadas em delineamento de parcelas divididas, com a parcela composta pelo fator cultivar, e as subparcelas pelas densidades de semeadura, com 50, 200, 350, 500 e 650 sementes aptas por metro quadrado. Observou-se que a senescência de afilhos esteve diretamente relacionada ao potencial de afilhamento dos genótipos. Os genótipos com elevada capacidade de afilhamento apresentaram efeito mais pronunciado da senescência, com o aumento da densidade de semeadura. O melhor ajuste dos componentes do rendimento foi obtido por meio da adequada densidade de semeadura, que deve ser realizada com base no potencial de afilhamento dos genótipos. Além disto, o efeito compensatório de genótipos com reduzido potencial de afilhamento é resultante de maior massa de grãos por espiga, em detrimento do número de espigas por unidade de área. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira CAPES, CNPq e FAPERGS 2008-10-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/38 Pesquisa Agropecuaria Brasileira; v.43, n.3, mar. 2008; 319-326 Pesquisa Agropecuária Brasileira; v.43, n.3, mar. 2008; 319-326 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/38/214 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/38/22 |
| institution |
EMBRAPA |
| collection |
OJS |
| country |
Brasil |
| countrycode |
BR |
| component |
Revista |
| access |
En linea |
| databasecode |
rev-pab-br |
| tag |
revista |
| region |
America del Sur |
| libraryname |
Sistema de bibliotecas de EMBRAPA |
| language |
por |
| format |
Digital |
| author |
Valério, Igor Pirez Carvalho, Fernando Irajá Félix de Oliveira, Antonio Costa de Machado, Amauri de Almeida Benin, Giovani Scheeren, Pedro Luiz Souza, Velci Queiróz de Hartwig, Irineu |
| spellingShingle |
Valério, Igor Pirez Carvalho, Fernando Irajá Félix de Oliveira, Antonio Costa de Machado, Amauri de Almeida Benin, Giovani Scheeren, Pedro Luiz Souza, Velci Queiróz de Hartwig, Irineu Tiller development and yield components in wheat genotypes under different seeding densities |
| author_facet |
Valério, Igor Pirez Carvalho, Fernando Irajá Félix de Oliveira, Antonio Costa de Machado, Amauri de Almeida Benin, Giovani Scheeren, Pedro Luiz Souza, Velci Queiróz de Hartwig, Irineu |
| author_sort |
Valério, Igor Pirez |
| title |
Tiller development and yield components in wheat genotypes under different seeding densities |
| title_short |
Tiller development and yield components in wheat genotypes under different seeding densities |
| title_full |
Tiller development and yield components in wheat genotypes under different seeding densities |
| title_fullStr |
Tiller development and yield components in wheat genotypes under different seeding densities |
| title_full_unstemmed |
Tiller development and yield components in wheat genotypes under different seeding densities |
| title_sort |
tiller development and yield components in wheat genotypes under different seeding densities |
| description |
The objective of this work was to determine the developmental pattern of tillers in wheat genotypes showing contrasting number of tillers. The genotypes were tested under different seeding densities, in order to evaluate their effect on grain yield components. The experiment was performed in Capão do Leão County, Rio Grande do Sul State, Brazil, in 2006. Ten wheat cultivars, selected by their tillering ability, were tested in a split plot design, where plots were formed by the genotype (cultivar), and subplots by different seeding densities: 50, 200, 350, 500 and 650 seeds per square meter. Results indicated that tiller senescence is directly correlated to tillering potential of the genotypes, and genotypes with higher tillering ability presented higher senescence values, when subjected to higher seeding densities. The best adjustment of yield components is obtained from the adequate seeding density, which can be achieved by matching the density and tillering potential. Also, higher yield in genotypes with reduced tillering potential is achieved by increasing grain mass per ear, to compensate for their lower number of ears per area unit. |
| publisher |
Pesquisa Agropecuaria Brasileira |
| publishDate |
2008 |
| url |
https://seer.sct.embrapa.br/index.php/pab/article/view/38 |
| work_keys_str_mv |
AT valerioigorpirez tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT carvalhofernandoirajafelixde tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT oliveiraantoniocostade tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT machadoamauridealmeida tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT beningiovani tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT scheerenpedroluiz tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT souzavelciqueirozde tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT hartwigirineu tillerdevelopmentandyieldcomponentsinwheatgenotypesunderdifferentseedingdensities AT valerioigorpirez desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT carvalhofernandoirajafelixde desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT oliveiraantoniocostade desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT machadoamauridealmeida desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT beningiovani desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT scheerenpedroluiz desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT souzavelciqueirozde desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura AT hartwigirineu desenvolvimentodeafilhosecomponentesdorendimentoemgenotiposdetrigosobdiferentesdensidadesdesemeadura |
| _version_ |
1813449605181865984 |