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Release of Postsenescent Dormancy in Leafy Spurge (Euphorbia esula) by Chilling

The growth and development of leafy spurge (Euphorbia esula L. #3 EPHES) collected during postsenescent dormancy and grown in the greenhouse was increasingly stimulated by chilling treatments longer than 14 days duration at 0 to 6 C. Production of stems with flower buds, primary flowers, and seconda...

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Published in:	Weed science 1988-11, Vol.36 (6), p.784-786
Main Authors:	Harvey, Stephen J., Nowierski, Robert M.
Format:	Article
Language:	English
Subjects:	Cooling DORMANCE Dormancy ENFRIAMIENTO ENVEJECIMIENTO ETAPAS DE DESARROLLO DE LA PLANTA EUPHORBIA Euphorbia esula Flower buds Flowers Greenhouses INDICE DE CRECIMIENTO LATENCIA Leaf buds MALEZAS MAUVAISE HERBE Plant growth Plant roots Plants REFROIDISSEMENT STADE DE DEVELOPPEMENT VEGETAL Stems TAUX DE CROISSANCE TEMPERATURA TEMPERATURE VIEILLISSEMENT Weed Biology and Ecology
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description	The growth and development of leafy spurge (Euphorbia esula L. #3 EPHES) collected during postsenescent dormancy and grown in the greenhouse was increasingly stimulated by chilling treatments longer than 14 days duration at 0 to 6 C. Production of stems with flower buds, primary flowers, and secondary flowers was greater in plants chilled for 42 days or more. The effects of chilling on total number of stems, number of strictly vegetative stems, or number of stems with vegetative branching were not significant. The height of the tallest stem per pot was influenced by chilling longer than 42 days. Growth rate also increased as a function of chilling duration. Based on our findings, we believe that there is little possibility that any significant growth can occur in the postsenescent period because of the prevailing climatic conditions found in areas of leafy spurge distribution in North America.
doi_str_mv	10.1017/S0043174500075834
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Production of stems with flower buds, primary flowers, and secondary flowers was greater in plants chilled for 42 days or more. The effects of chilling on total number of stems, number of strictly vegetative stems, or number of stems with vegetative branching were not significant. The height of the tallest stem per pot was influenced by chilling longer than 42 days. Growth rate also increased as a function of chilling duration. 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Production of stems with flower buds, primary flowers, and secondary flowers was greater in plants chilled for 42 days or more. The effects of chilling on total number of stems, number of strictly vegetative stems, or number of stems with vegetative branching were not significant. The height of the tallest stem per pot was influenced by chilling longer than 42 days. Growth rate also increased as a function of chilling duration. Based on our findings, we believe that there is little possibility that any significant growth can occur in the postsenescent period because of the prevailing climatic conditions found in areas of leafy spurge distribution in North America.</description><subject>Cooling</subject><subject>DORMANCE</subject><subject>Dormancy</subject><subject>ENFRIAMIENTO</subject><subject>ENVEJECIMIENTO</subject><subject>ETAPAS DE DESARROLLO DE LA PLANTA</subject><subject>EUPHORBIA</subject><subject>Euphorbia esula</subject><subject>Flower buds</subject><subject>Flowers</subject><subject>Greenhouses</subject><subject>INDICE DE CRECIMIENTO</subject><subject>LATENCIA</subject><subject>Leaf buds</subject><subject>MALEZAS</subject><subject>MAUVAISE HERBE</subject><subject>Plant growth</subject><subject>Plant roots</subject><subject>Plants</subject><subject>REFROIDISSEMENT</subject><subject>STADE DE DEVELOPPEMENT VEGETAL</subject><subject>Stems</subject><subject>TAUX DE CROISSANCE</subject><subject>TEMPERATURA</subject><subject>TEMPERATURE</subject><subject>VIEILLISSEMENT</subject><subject>Weed Biology and Ecology</subject><issn>0043-1745</issn><issn>1550-2759</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><recordid>eNp9kLtOwzAUhi0EEqXwACAGTwiGgB3HcTyiUi5SpSJKZ-skOW5TpXGxkyFvT6oiFiSmM3z_5egn5JKze864elgwlgiuEskYUzITyREZcSlZFCupj8loj6M9PyVnIWwY42nM9YjMP7BGCEidpe8utAEbDAU2LX1yfgtN0dOqoTME29PFrvMrpLfTbrd2Pq-AYuhquKN5Tyfrqq6rZnVOTizUAS9-7pgsn6efk9doNn95mzzOokII0UY65aW0CiBLSxAlF5gKlCCyVJVC6ZzH0rLCcrAyFikWcWylzmOpNSheqlSMyc0hd-fdV4ehNdtq-LuuoUHXBcMlGzpUNgj5QVh4F4JHa3a-2oLvDWdmP535M93guT54NqF1_teQsCRR2T7y6oAtOAMrXwWzXGSZipnWAxQ_fbDNfVWu0Gxc55thjH8avwGMyoDw</recordid><startdate>19881101</startdate><enddate>19881101</enddate><creator>Harvey, Stephen J.</creator><creator>Nowierski, Robert M.</creator><general>Cambridge University Press</general><general>Weed Science Society of America</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>C1K</scope></search><sort><creationdate>19881101</creationdate><title>Release of Postsenescent Dormancy in Leafy Spurge (Euphorbia esula) by Chilling</title><author>Harvey, Stephen J. ; Nowierski, Robert M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c333t-961d5f7aa86da3d13e63e5a3867d379b125f0cf1af5236ec22f59b2599a71d763</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1988</creationdate><topic>Cooling</topic><topic>DORMANCE</topic><topic>Dormancy</topic><topic>ENFRIAMIENTO</topic><topic>ENVEJECIMIENTO</topic><topic>ETAPAS DE DESARROLLO DE LA PLANTA</topic><topic>EUPHORBIA</topic><topic>Euphorbia esula</topic><topic>Flower buds</topic><topic>Flowers</topic><topic>Greenhouses</topic><topic>INDICE DE CRECIMIENTO</topic><topic>LATENCIA</topic><topic>Leaf buds</topic><topic>MALEZAS</topic><topic>MAUVAISE HERBE</topic><topic>Plant growth</topic><topic>Plant roots</topic><topic>Plants</topic><topic>REFROIDISSEMENT</topic><topic>STADE DE DEVELOPPEMENT VEGETAL</topic><topic>Stems</topic><topic>TAUX DE CROISSANCE</topic><topic>TEMPERATURA</topic><topic>TEMPERATURE</topic><topic>VIEILLISSEMENT</topic><topic>Weed Biology and Ecology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Harvey, Stephen J.</creatorcontrib><creatorcontrib>Nowierski, Robert M.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Weed science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Harvey, Stephen J.</au><au>Nowierski, Robert M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Release of Postsenescent Dormancy in Leafy Spurge (Euphorbia esula) by Chilling</atitle><jtitle>Weed science</jtitle><addtitle>Weed sci</addtitle><date>1988-11-01</date><risdate>1988</risdate><volume>36</volume><issue>6</issue><spage>784</spage><epage>786</epage><pages>784-786</pages><issn>0043-1745</issn><eissn>1550-2759</eissn><abstract>The growth and development of leafy spurge (Euphorbia esula L. #3 EPHES) collected during postsenescent dormancy and grown in the greenhouse was increasingly stimulated by chilling treatments longer than 14 days duration at 0 to 6 C. Production of stems with flower buds, primary flowers, and secondary flowers was greater in plants chilled for 42 days or more. The effects of chilling on total number of stems, number of strictly vegetative stems, or number of stems with vegetative branching were not significant. The height of the tallest stem per pot was influenced by chilling longer than 42 days. Growth rate also increased as a function of chilling duration. Based on our findings, we believe that there is little possibility that any significant growth can occur in the postsenescent period because of the prevailing climatic conditions found in areas of leafy spurge distribution in North America.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/S0043174500075834</doi><tpages>3</tpages><oa>free_for_read</oa></addata></record>
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source	JSTOR Archival Journals and Primary Sources Collection
subjects	Cooling DORMANCE Dormancy ENFRIAMIENTO ENVEJECIMIENTO ETAPAS DE DESARROLLO DE LA PLANTA EUPHORBIA Euphorbia esula Flower buds Flowers Greenhouses INDICE DE CRECIMIENTO LATENCIA Leaf buds MALEZAS MAUVAISE HERBE Plant growth Plant roots Plants REFROIDISSEMENT STADE DE DEVELOPPEMENT VEGETAL Stems TAUX DE CROISSANCE TEMPERATURA TEMPERATURE VIEILLISSEMENT Weed Biology and Ecology
title	Release of Postsenescent Dormancy in Leafy Spurge (Euphorbia esula) by Chilling
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