Root system distribution of upland rice cultivated in dystrophic dusky-red latosol

Root system distribution of upland rice cultivated in dystrophic dusky-red latosol

Two experiments were conducted to study the distribution of root system of upland rice (Oryza sativa L.) cultivars: a) under field conditions and b) in PVC tubes 100 cm long and 10 cm of diameter. In the first experiment early cultivar IAC 164 and late cultivars IAC 1246 and Perola were tested. In the second experiment these same three cultivars and also early Pratão Precoce and Dourado Precoce were tested- In both experiments, the sampling of dry matter was evaluated on layers of 20 cm depth. Under field conditions no differences were observed among cultivars in relation to root dry weight on different layers, and also to total root and total shoot dry matter production. In the experiment performed using PVC tubes it was observe a significantly greater amount of root dry matter on late cultivars IAC 1246 and Pérola in relation to the early ones. However, the data were not enough to differentiate cultivars with greater ability of root penetration in the soil.

Saved in:
Bibliographic Details
Main Authors: Okuyama, Lauro Akio, Colasante, Luiz Osvaldo
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2014
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/14868
Tags: Add Tag
No Tags, Be the first to tag this record!
id rev-pab-br-article-14868
record_format ojs
spelling rev-pab-br-article-148682014-10-08T19:27:32Z Root system distribution of upland rice cultivated in dystrophic dusky-red latosol Distribuição do sistema radicular do arroz-de-sequeiro cultivado em latossolo roxo distrófico Okuyama, Lauro Akio Colasante, Luiz Osvaldo Oryza sativa; cultivars; dry matter; drought resistance Oryza sativa; cultivar; peso das raízes secas; resistência à seca Two experiments were conducted to study the distribution of root system of upland rice (Oryza sativa L.) cultivars: a) under field conditions and b) in PVC tubes 100 cm long and 10 cm of diameter. In the first experiment early cultivar IAC 164 and late cultivars IAC 1246 and Perola were tested. In the second experiment these same three cultivars and also early Pratão Precoce and Dourado Precoce were tested- In both experiments, the sampling of dry matter was evaluated on layers of 20 cm depth. Under field conditions no differences were observed among cultivars in relation to root dry weight on different layers, and also to total root and total shoot dry matter production. In the experiment performed using PVC tubes it was observe a significantly greater amount of root dry matter on late cultivars IAC 1246 and Pérola in relation to the early ones. However, the data were not enough to differentiate cultivars with greater ability of root penetration in the soil. Dois experimentos foram conduzidos com a finalidade de estudar a distribuição do sistema radicular em cultivares de arroz-de-sequeiro (Oryza sativa L.). No experimento instalado sob condições de campo foram estudadas a cultivar precoce IAC 164 e as cultivares tardias IAC 1246 e Pérola. No outro experimento, além dessas três, avaliou-se as cultivares precoces Pratão Precoce e Dourado Precoce, em tubos de PVC com 10 cm de diâmetro e 100 cm de comprimento.  As amostragens para as determinações do peso seco das raízes em ambos os experimentos foram realizadas em camadas de 20 cm de profundidade. Sob condições de campo não se evidenciaram diferenças entre as cultivares em relação ao peso de matéria seca de raízes nas diferentes camadas, assim como no peso total de matéria seca de raízes e da parte aérea. No experimento conduzido em tubos de PVC observou-se maior quantidade de matéria seca de raízes nas cultivares tardias IAC 1246 e Pérola. Embora estas tenham apresentado major quantidade de matéria seca de raízes em relação às precoces, os dados não foram suficientes para diferenciar materiais com maior capacidade de crescimento de raízes em profundidade. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2014-04-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/14868 Pesquisa Agropecuaria Brasileira; v.22, n.8, ago. 1987; 803-807 Pesquisa Agropecuária Brasileira; v.22, n.8, ago. 1987; 803-807 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/14868/8574
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 Okuyama, Lauro Akio
Colasante, Luiz Osvaldo
spellingShingle Okuyama, Lauro Akio
Colasante, Luiz Osvaldo
Root system distribution of upland rice cultivated in dystrophic dusky-red latosol
author_facet Okuyama, Lauro Akio
Colasante, Luiz Osvaldo
author_sort Okuyama, Lauro Akio
title Root system distribution of upland rice cultivated in dystrophic dusky-red latosol
title_short Root system distribution of upland rice cultivated in dystrophic dusky-red latosol
title_full Root system distribution of upland rice cultivated in dystrophic dusky-red latosol
title_fullStr Root system distribution of upland rice cultivated in dystrophic dusky-red latosol
title_full_unstemmed Root system distribution of upland rice cultivated in dystrophic dusky-red latosol
title_sort root system distribution of upland rice cultivated in dystrophic dusky-red latosol
description Two experiments were conducted to study the distribution of root system of upland rice (Oryza sativa L.) cultivars: a) under field conditions and b) in PVC tubes 100 cm long and 10 cm of diameter. In the first experiment early cultivar IAC 164 and late cultivars IAC 1246 and Perola were tested. In the second experiment these same three cultivars and also early Pratão Precoce and Dourado Precoce were tested- In both experiments, the sampling of dry matter was evaluated on layers of 20 cm depth. Under field conditions no differences were observed among cultivars in relation to root dry weight on different layers, and also to total root and total shoot dry matter production. In the experiment performed using PVC tubes it was observe a significantly greater amount of root dry matter on late cultivars IAC 1246 and Pérola in relation to the early ones. However, the data were not enough to differentiate cultivars with greater ability of root penetration in the soil.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2014
url https://seer.sct.embrapa.br/index.php/pab/article/view/14868
work_keys_str_mv AT okuyamalauroakio rootsystemdistributionofuplandricecultivatedindystrophicduskyredlatosol
AT colasanteluizosvaldo rootsystemdistributionofuplandricecultivatedindystrophicduskyredlatosol
AT okuyamalauroakio distribuicaodosistemaradiculardoarrozdesequeirocultivadoemlatossoloroxodistrofico
AT colasanteluizosvaldo distribuicaodosistemaradiculardoarrozdesequeirocultivadoemlatossoloroxodistrofico
_version_ 1813450456546934784

Similar Items