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The effect of tetraploidization of wild Arachis on leaf morphology and other drought-related traits

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Relation http://oar.icrisat.org/5904/
http://dx.doi.org/10.1016/j.envexpbot.2012.04.005
 
Title The effect of tetraploidization of wild Arachis on leaf morphology and other drought-related traits
 
Creator Leal-Bertioli, S C M
Bertioli, D J
Guimaraes, P M
Pereira, T D
Galhardo, I
Silva, J P
Brasileiro, A C M
Oliveira, R S
Silva, P I T
Vadez, V
Araujo, A C G
 
Subject Groundnut
 
Description Cultivated peanut is an allotetraploid (genome type AABB) with a very narrow genetic base, therefore wild species are an attractive source of new variability and traits. Because most wild species are diploid, the first step of introgression usually involves hybridization of wild species and polyploidization to produce a synthetic allotetraploid (AABB) that is sexually compatible with peanut. This study investigates drought-related traits such as leaf morphology, transpiration profile, chlorophyll meter readings (SCMR), specific leaf area (SLA) and transpiration rate per leaf area for two wild diploids (A. duranensis and A. ipaënsis) that could be of interest for improvement of the peanut crop. Furthermore, the inheritance of the traits from the diploid to the tetraploid state was investigated. Results showed that whilst some diploid traits such as SCMR, are maintained through hybridization and polyploidization, most characters, such as the leaf area, stomata size, trichome density and transpiration profile, are substantially modified. The study concludes that direct evaluations of drought-related traits in wild diploids may be useful for evaluation of wild species to be used in introgression. However, evaluations on wild-derived synthetic tetraploids are likely to be more informative.
 
Publisher Elsevier
 
Date 2012
 
Type Article
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
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Identifier http://oar.icrisat.org/5904/2/AppendA_supple_Data.pdf
http://oar.icrisat.org/5904/13/EEB_84_17-24_2012.pdf
Leal-Bertioli, S C M and Bertioli, D J and Guimaraes, P M and Pereira, T D and Galhardo, I and Silva, J P and Brasileiro, A C M and Oliveira, R S and Silva, P I T and Vadez, V and Araujo, A C G (2012) The effect of tetraploidization of wild Arachis on leaf morphology and other drought-related traits. Environmental and Experimental Botany, 84. pp. 17-24. ISSN 0098-8472