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

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

► Wild diploid Arachis are sources of new traits for tetraploid cultivated peanut. ► In this work drought-related morpho-physiological traits were analyzed in Arachis genotypes. ► Most drought-related traits were changed by hybridization and tetraploidization of the diploids. ► To guide introgressio...

Full description

Saved in:
Bibliographic Details
Published in:Environmental and experimental botany Vol. 84; pp. 17 - 24
Main Authors: Leal-Bertioli, Soraya C.M., Bertioli, David J., Guimarães, Patricia M., Pereira, Talles D., Galhardo, Iugo, Silva, Joseane P., Brasileiro, Ana Cristina M., Oliveira, Rafael S., Silva, Pedro Í.T., Vadez, Vincent, Araujo, Ana Claudia G.
Format: Journal Article
Language:English
Published: Amsterdam Elsevier B.V 01-12-2012
Elsevier
Subjects:
Arachis
Arachis hypogaea
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Introgression
Leaf morphology
Peanut
Synthetic allotetraploid
Transpiration
Wild germplasm
Peanut
Transpiration
Leaf morphology
Introgression
Synthetic allotetraploid
Wild germplasm
Alloploidy
Genetic resource
Plant ecology
Arachis hypogaea
Plant leaf
Tetraploidy
Leguminosae
Dicotyledones
Morphology
Angiospermae
Botany
Wild plant
Spermatophyta
Drought
Oil plant (vegetal)
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► Wild diploid Arachis are sources of new traits for tetraploid cultivated peanut. ► In this work drought-related morpho-physiological traits were analyzed in Arachis genotypes. ► Most drought-related traits were changed by hybridization and tetraploidization of the diploids. ► To guide introgression, evaluations on synthetic tetraploids are likely to be most informative. 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 (Arachis duranensis and Arachis 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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0098-8472
1873-7307
DOI:10.1016/j.envexpbot.2012.04.005