How portulaca seedlings avoid their neighbours

Ariel Novoplansky; Dan Cohen; Tsvi Sachs

doi:10.1007/BF00319791

How portulaca seedlings avoid their neighbours

Ariel Novoplansky, Dan Cohen, Tsvi Sachs

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

Abstract

Portulaca oleracea L. seedlings do not develop in the direction of neighbours, even when these neighbours are small and distant. Neighbouring plants could be simulated by small rectangles of a plastic that resembled leaves in its spectral characteristics. Unlike seedlings, mature plants did not respond to objects that do not influence photosynthetic light. When light of equal intensity was received from all directions, Portulaca seedlings avoided the direction with higher far-red light. Portulaca is thus able to use spectral composition and direction of light as clues for the probability of the direction of future shade.

Original language	English
Pages (from-to)	490-493
Number of pages	4
Journal	Oecologia
Volume	82
Issue number	4
DOIs	https://doi.org/10.1007/BF00319791
State	Published - 1 Apr 1990
Externally published	Yes

Keywords

Developmental plasticity
Environmental signals
Far-red light
Phytochrome
Plant competition
Portulaca oleracea L.

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics

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10.1007/BF00319791

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title = "How portulaca seedlings avoid their neighbours",

abstract = "Portulaca oleracea L. seedlings do not develop in the direction of neighbours, even when these neighbours are small and distant. Neighbouring plants could be simulated by small rectangles of a plastic that resembled leaves in its spectral characteristics. Unlike seedlings, mature plants did not respond to objects that do not influence photosynthetic light. When light of equal intensity was received from all directions, Portulaca seedlings avoided the direction with higher far-red light. Portulaca is thus able to use spectral composition and direction of light as clues for the probability of the direction of future shade.",

keywords = "Developmental plasticity, Environmental signals, Far-red light, Phytochrome, Plant competition, Portulaca oleracea L.",

author = "Ariel Novoplansky and Dan Cohen and Tsvi Sachs",

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volume = "82",

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AU - Novoplansky, Ariel

AU - Cohen, Dan

AU - Sachs, Tsvi

PY - 1990/4/1

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N2 - Portulaca oleracea L. seedlings do not develop in the direction of neighbours, even when these neighbours are small and distant. Neighbouring plants could be simulated by small rectangles of a plastic that resembled leaves in its spectral characteristics. Unlike seedlings, mature plants did not respond to objects that do not influence photosynthetic light. When light of equal intensity was received from all directions, Portulaca seedlings avoided the direction with higher far-red light. Portulaca is thus able to use spectral composition and direction of light as clues for the probability of the direction of future shade.

AB - Portulaca oleracea L. seedlings do not develop in the direction of neighbours, even when these neighbours are small and distant. Neighbouring plants could be simulated by small rectangles of a plastic that resembled leaves in its spectral characteristics. Unlike seedlings, mature plants did not respond to objects that do not influence photosynthetic light. When light of equal intensity was received from all directions, Portulaca seedlings avoided the direction with higher far-red light. Portulaca is thus able to use spectral composition and direction of light as clues for the probability of the direction of future shade.

KW - Developmental plasticity

KW - Environmental signals

KW - Far-red light

KW - Phytochrome

KW - Plant competition

KW - Portulaca oleracea L.

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JO - Oecologia

JF - Oecologia

IS - 4

ER -

How portulaca seedlings avoid their neighbours

Abstract

Keywords

ASJC Scopus subject areas

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