Capacidade de enraizamento de estacas de genótipos de pinhão-manso sob lâminas de água

• Main Authors: Joseanny Cardoso da Silva Pereira, Raphael Campestrini, Hélio Bandeira Barros, Juciele Cardoso da Silva Magalhães, Rodrigo Ribeiro Fidelis
• Format: Article
• Language: English
• Published: Grupo Verde de Agroecologia e Abelhas (GVAA) 2013-04-01
• Series: Revista Verde de Agroecologia e Desenvolvimento Sustentável
• Online Access: http://www.gvaa.com.br/revista/index.php/RVADS/article/view/1890

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A água é fundamental para o enraizamento de estacas, pois a sua deficiência pode provocar o dessecamento das estacas e seu excesso pode dificultar as trocas gasosas, favorecendo o desenvolvimento de doença, impedindo o enraizamento e levando à morte dos tecidos vegetais. O experimento constitui-se de dez tratamentos (dez genótipos de pinhão-manso) e duas lâminas de água (2,5 e 1,25 mm de água) dispostos em blocos casualizados, com quatro repetições. Avaliou-se o número de brotos por planta, área foliar, massa seca da folha, massa seca da raiz e comprimento da raiz. Houve significância da interação genótipos x lâminas de água para as características comprimento da raiz e massa seca das raízes. A lâmina de água de 2,5 mm favoreceu uma maior formação de brotos e massa seca da folha. Na lâmina de 1,25 mm, as características área foliar, comprimento de raiz e massa seca da raiz apresentaram maiores médias. Existem diferenças entre os genótipos de pinhão-manso quanto à capacidade de emitir raízes.</p><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" DefUnhideWhenUsed="true" DefSemiHidden="true" DefQFormat="false" DefPriority="99" LatentStyleCount="267"> <w:LsdException Locked="false" Priority="0" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Normal" /> <w:LsdException Locked="false" Priority="9" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="heading 1" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 2" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 3" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 4" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 5" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 6" /> <w:LsdException Locked="false" Priority="9" QFormat="true" Name="heading 7" /> <w:LsdException 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