The induction of a light requirement in bidens pilosa seeds by leaf canopy shade

dc.contributor.author	Fenner, M.
dc.date.accessioned	2014-06-03T08:48:06Z
dc.date.available	2014-06-03T08:48:06Z
dc.date.issued	1980-01
dc.description	DOI: 10.1111/j.1469-8137.1980.tb00752.x	en_US
dc.description.abstract	The aim of these experiments was to determine whether exposure to leaf-canopy shade induces a light requirement for germination in Bidens pilosa seeds. Seeds of this species were pretreated by placing them in the shade of a natural canopy for 12 days and then setting half of them to germinate in full light and the other half in darkness. Canopy-treated seeds acquired a marked light requirement. The pretreatment was more effective if the seeds were imbibed during it. Fresh and old seeds gave similar results. In a second experiment the effect of time of exposure to canopy shade on the induction of a light requirement was investigated. It was found that only 1 h exposure to leaf-transmitted light is required to induce an almost complete light requirement in this species. The ecological implications of the results are discussed.	en_US
dc.identifier.citation	New Phytologist Volume 84, Issue 1, pages 103–106, January 1980	en_US
dc.identifier.issn	0028-646X,
dc.identifier.other	1469-8137
dc.identifier.uri	http://ir-library.ku.ac.ke/handle/123456789/9748
dc.language.iso	en	en_US
dc.publisher	Wiley	en_US
dc.title	The induction of a light requirement in bidens pilosa seeds by leaf canopy shade	en_US
dc.type	Article	en_US

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