induction of contractile roots in Gladiolus grandiflorus

The number of contractile roots formed in gladioli was inversely related to the depth of the planted corm. Below a certain depth, no contractile roots were produced. Large corms did not produce contractile roots at any planting depth but produced two or more small corms. Depth perception is a functi...

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Veröffentlicht in:Planta 1986, Vol.167 (1), p.94-100
1. Verfasser: Halevy, A.H
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description The number of contractile roots formed in gladioli was inversely related to the depth of the planted corm. Below a certain depth, no contractile roots were produced. Large corms did not produce contractile roots at any planting depth but produced two or more small corms. Depth perception is a function of two independent mechanisms, namely, temperature fluctuations in the root-initiation zone and the amount of light perceived mainly by the upper sheath leaf, the length of which varies with planting depth. Various growth substances applied to the leaves or corms did not induce contractile roots in dark-grown plants but roots were induced by indole-3-butyric acid in both small and large corms grown at constant temperatures and light. Abscisic acid retarded the formation of contractile roots under inductive conditions.
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Below a certain depth, no contractile roots were produced. Large corms did not produce contractile roots at any planting depth but produced two or more small corms. Depth perception is a function of two independent mechanisms, namely, temperature fluctuations in the root-initiation zone and the amount of light perceived mainly by the upper sheath leaf, the length of which varies with planting depth. Various growth substances applied to the leaves or corms did not induce contractile roots in dark-grown plants but roots were induced by indole-3-butyric acid in both small and large corms grown at constant temperatures and light. 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Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>contraction</subject><subject>Corms</subject><subject>Economic plant physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gladiolus</subject><subject>Growth and development</subject><subject>Leaves</subject><subject>Morphogenesis, differentiation, rhizogenesis, tuberization. Senescence</subject><subject>Mothers</subject><subject>Physical agents</subject><subject>Plant growth regulators</subject><subject>Plant physiology and development</subject><subject>Plant roots</subject><subject>Planting</subject><subject>planting depth perception</subject><subject>Plants</subject><subject>rooting</subject><subject>Rooting depth</subject><subject>roots</subject><subject>Soil temperature regimes</subject><subject>Vegetative apparatus, growth and morphogenesis. 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Senescence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Halevy, A.H</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Planta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Halevy, A.H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>induction of contractile roots in Gladiolus grandiflorus</atitle><jtitle>Planta</jtitle><addtitle>Planta</addtitle><date>1986</date><risdate>1986</risdate><volume>167</volume><issue>1</issue><spage>94</spage><epage>100</epage><pages>94-100</pages><issn>0032-0935</issn><eissn>1432-2048</eissn><coden>PLANAB</coden><abstract>The number of contractile roots formed in gladioli was inversely related to the depth of the planted corm. 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subjects Acid soils
Agronomy. Soil science and plant productions
Biological and medical sciences
contraction
Corms
Economic plant physiology
Fundamental and applied biological sciences. Psychology
Gladiolus
Growth and development
Leaves
Morphogenesis, differentiation, rhizogenesis, tuberization. Senescence
Mothers
Physical agents
Plant growth regulators
Plant physiology and development
Plant roots
Planting
planting depth perception
Plants
rooting
Rooting depth
roots
Soil temperature regimes
Vegetative apparatus, growth and morphogenesis. Senescence
title induction of contractile roots in Gladiolus grandiflorus
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