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Bibliographic Details
Main Author:	Kathia Fernandes Lopes Pivetta
Format:	Artículo científico
Language:	pt
Published:	Universidade Federal de Viçosa 2012
Subjects:	Agrociencias Estaquia AIB e Propagação assexuada
Online Access:	https://www.redalyc.org/articulo.oa?id=48821985003
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Época de coleta e ácido indolbutírico no enraizamento de estacas de espirradeira (Nerium oleander L.) Kathia Fernandes Lopes Pivetta Denise Renata Pedrinho Silvio Fávero Gisele Sales Batista Renata Bachin Mazzini Agrociencias Estaquia AIB e Propagação assexuada A espirradeira (Nerium oleander L.) é uma importante espécie arbórea ornamental, muito utilizada no meio urbano. É propagada por estacas, porém a porcentagem de enraizamento é baixa e não há estudos sobre fatores que influenciam nesse processo. Este trabalho teve, portanto, o objetivo de estudar o efeito da época de coleta e do ácido indolbutírico (AIB) no enraizamento de estacas de duas variedades de espirradeira (Nerium oleander L.), determinadas pela coloração das flores (rosa e branca). O experimento foi instalado na UNESP, Campus de Jaboticabal/SP, no verão e no inverno. O delineamento experimental foi em blocos casualizados em esquema fatorial 2 x 2 x 4 (duas variedades combinadas com duas estações do ano e quatro concentrações de AIB - 0, 1.000, 2.000 e 4.000 mg kg-1). As avaliações foram realizadas 60 dias após a estaquia, sendo estas as variáveis: porcentagem de enraizamento, número médio, comprimento e massa de matéria seca de raízes. Concluiu-se que o enraizamento de ambas as variedades de espirradeira (rosa e branca) foi superior no verão. A variedade de flores rosas apresentou maior número e comprimento médio de raízes no verão, porém as maiores porcentagens de enraizamento e massa de matéria seca de raízes foram encontradas no inverno. O ácido indolbutírico foi efetivo para aumentar a porcentagem de enraizamento nas concentrações testadas de 1.000 e 2.000 mg kg-1; maior número, comprimento e massa de matéria seca de raízes foram obtidos na concentração de 2.000 mg kg-1. 2012 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48821985003 pt http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.1 Vol.36

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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