Important photosynthetic contribution from the non-foliar green organs in cotton at the late growth stage

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dc.contributor.authorChow, Wah Soon
dc.contributor.authorHu, Yuan-Yuan
dc.contributor.authorZhang, Ya-Li
dc.contributor.authorLuo, Hong-Hai
dc.contributor.authorLi, Wei
dc.contributor.authorRiichi, Oguchi
dc.contributor.authorFan, Da-Yong
dc.contributor.authorZhang, Wang-Feng
dc.date.accessioned2014-05-08T00:43:26Z
dc.date.available2014-05-08T00:43:26Z
dc.date.issued2011-09-09
dc.date.updated2015-12-09T07:39:26Z
dc.description.abstractNon-foliar green organs are recognized as important carbon sources after leaves. However, the contribution of each organ to total yield has not been comprehensively studied in relation to the time-course of changes in surface area and photosynthetic activity of different organs at different growth stages. We studied the contribution of leaves, main stem, bracts and capsule walls in cotton by measuring their time-course of surface area development, O2 evolution capacity and photosynthetic enzyme activity. Because of the early senescence of leaves, non-foliar organs increased their surface area up to 38.2% of total at late growth stage. Bracts and capsule wall showed less ontogenetic decrease in O2 evolution capacity per area and photosynthetic enzyme activity than leaves at the late growth stage. The total capacity for O2 evolution of stalks and bolls (bracts plus capsule wall) was 12.7% and 23.7% (total ca. 36.4%), respectively, as estimated by m! ultiplying their surface area by their O2 evolution capacity per area. We also kept the bolls (from 15 days after anthesis) or main stem (at the early full bolling stage) in darkness for comparison with non-darkened controls. Darkening the bolls and main stem reduced the boll weight by 24.1% and 9%, respectively, and the seed weight by 35.9% and 16.3%, respectively. We conclude that non-foliar organs significantly contribute to the yield at the late growth stage.
dc.format12 pages
dc.identifier.issn0032-0935
dc.identifier.other1432-2048
dc.identifier.urihttp://hdl.handle.net/1885/11635
dc.publisherSpringer
dc.relationhttp://purl.org/au-research/grants/arc/dp1093827
dc.rights© Springer-Verlag 2011 Can archive pre/post print http://www.sherpa.ac.uk/romeo/issn/0032-0935/
dc.sourcePlanta 235 (2012): 325–336
dc.source.urihttp://doi.org/10.1007/s00425-011-1511-zen_AU
dc.subjectdifferent growth stages
dc.subjectO2 evolution
dc.subjectphotosynthetic enzymes
dc.subjectsurface area
dc.subjectreproductive biomass
dc.titleImportant photosynthetic contribution from the non-foliar green organs in cotton at the late growth stage
dc.typeJournal article
dcterms.dateAccepted2011-08-22
local.bibliographicCitation.issue2
local.bibliographicCitation.lastpage336
local.bibliographicCitation.startpage325
local.contributor.affiliationChow, Wah Soon, ANU Research School of Biology, College of Medicine, Biology and Environment
local.contributor.affiliationRiichi, Oguchi, ANU Research School of Biology, College of Medicine, Biology and Environment
local.contributor.authoremailFred.Chow@anu.edu.auen_AU
local.contributor.authoruidu9609696en_AU
local.identifier.absfor060705 - Plant Physiology
local.identifier.absseo820301 - Cotton
local.identifier.ariespublicationu4956746xPUB178
local.identifier.citationvolume235
local.identifier.doi10.1007/s00425-011-1511-z
local.identifier.scopusID2-s2.0-84856223752
local.identifier.thomsonID000299515400009
local.identifier.uidSubmittedByu9609696en_AU
local.publisher.urlhttp://link.springer.com/en_AU
local.type.statusAccepted versionen_AU

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