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אסיף מאגר המחקר החקלאי
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Response of photosynthetic parameters of sweet pepper leaves to light quality manipulation by photoselective shade nets
Year:
2012
Source of publication :
Acta Horticulturae
Authors :
Avraham, Lior
;
.
Ratner, Kira
;
.
Shahak, Yosepha
;
.
Volume :
956
Co-Authors:

Kong, Y., Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
 

Facilitators :
From page:
501
To page:
506
(
Total pages:
6
)
Abstract:
Photoselective nets provide a new tool for light-quality manipulation in protected horticulture. We have studied the photosynthetic activity and leaf characteristics of sweet pepper (Capsicum annuum L. 'Tirza') grown under Pearl, Yellow and Red ChromatiNets® of the same shading factor. Their transmitted light is enriched by diffused light of 390, 520 and 590 nm and up, under the Pearl, Yellow and Red net, respectively, compared to an equivalent black shade net. Leaves of the same age and position were found to respond to this light quality manipulation in the following way: The highest net assimilation (A net) and stomatal conductance (gsw) at midday were obtained under the Pearl net, followed by the Red and Yellow nets; the effective quantum yield (ΔF/F'm) was lowest under the Red net; despite of no significant difference in stomatal density, stomatal width was largest under the Pearl net, and smallest under the Yellow; both leaf thickness and palisade/sponge ratio were lowest under the Yellow net; the specific leaf weight (SLW) was largest under the Pearl net; chlorophyll content was lowest, while chlorophyll/carotenoid ratio was highest under the Red net. Therefore, photoselective shading can differentially affect leaf parameters and activities in sweet pepper. From the aspect of photosynthesis, the Pearl net appears to be more suitable for sweet pepper summer production in Israel, or equivalent areas. © ISHS 2012.
Note:
Related Files :
Capsicum annuum
Leaf morphology
Net assimilation
Specific leaf weight
Stomatal conductance
Show More
Related Content
More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31007
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:59
Scientific Publication
Response of photosynthetic parameters of sweet pepper leaves to light quality manipulation by photoselective shade nets
956

Kong, Y., Beijing Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing 102206, China
 

Response of photosynthetic parameters of sweet pepper leaves to light quality manipulation by photoselective shade nets
Photoselective nets provide a new tool for light-quality manipulation in protected horticulture. We have studied the photosynthetic activity and leaf characteristics of sweet pepper (Capsicum annuum L. 'Tirza') grown under Pearl, Yellow and Red ChromatiNets® of the same shading factor. Their transmitted light is enriched by diffused light of 390, 520 and 590 nm and up, under the Pearl, Yellow and Red net, respectively, compared to an equivalent black shade net. Leaves of the same age and position were found to respond to this light quality manipulation in the following way: The highest net assimilation (A net) and stomatal conductance (gsw) at midday were obtained under the Pearl net, followed by the Red and Yellow nets; the effective quantum yield (ΔF/F'm) was lowest under the Red net; despite of no significant difference in stomatal density, stomatal width was largest under the Pearl net, and smallest under the Yellow; both leaf thickness and palisade/sponge ratio were lowest under the Yellow net; the specific leaf weight (SLW) was largest under the Pearl net; chlorophyll content was lowest, while chlorophyll/carotenoid ratio was highest under the Red net. Therefore, photoselective shading can differentially affect leaf parameters and activities in sweet pepper. From the aspect of photosynthesis, the Pearl net appears to be more suitable for sweet pepper summer production in Israel, or equivalent areas. © ISHS 2012.
Scientific Publication
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