Next Article in Journal
Short-Term Effects of Changing Soil Management Practices on Soil Quality Indicators and Crop Yields in Greenhouses
Previous Article in Journal
New Molecular Tool for a Quick and Easy Detection of Apple Scab in the Field
Open AccessArticle

Assessment of 16 Peanut (Arachis hypogaea L.) CSSLs Derived from an Interspecific Cross for Yield and Yield Component Traits: QTL Validation

1
Centre d’Etude Régional pour l’Amélioration de l’Adaptation à la Sécheresse (CERAAS), Institut Sénégalais de Recherches Agricoles (ISRA), Route de Khombole, Thiès BP 3320, Senegal
2
Département de Biologie Végétale, Faculté des Sciences et Techniques, Université Cheih Anta Diop de Dakar, Dakar BP 5005, Senegal
3
Institut Universitaire de Technologies Bois-Mbalmayo, Université de Yaoundé 1, Mbalmayo BP 306, Yaoundé, Cameroun
4
Centre National de Recherche Agronomique (CNRA), Institut Sénégalais de Recherches Agricoles (ISRA), Bambey BP 53, Senegal
5
CIRAD, UMR AGAP, F-34398 Montpellier, France
6
AGAP, Univ Montpellier, CIRAD, INRAE, Montpellier SupAgro, 34090 Montpellier, France
7
CIRAD, UMR AGAP, Thies BP 3320, Senegal
*
Author to whom correspondence should be addressed.
Agronomy 2020, 10(4), 583; https://doi.org/10.3390/agronomy10040583
Received: 8 April 2020 / Revised: 14 April 2020 / Accepted: 15 April 2020 / Published: 18 April 2020
(This article belongs to the Section Crop Breeding and Genetics)
Cultivated peanut is an allotetraploid (2n = 4× = 40) with narrow genetic diversity. In previous studies, we developed an advanced backcross quantitative trait loci (AB-QTL) population from the cross between the synthetic allotetraploid ((Arachis ipaensis × Arachis duranensis)) and the cultivated variety Fleur11, and mapped several quantitative trait loci (QTLs) involved in yield and yield components. We also developed a chromosome segment substitution line (CSSL) population as a way to mendelize the QTLs and analyzing their effects. In this study, 16 CSSLs were used for assessing the contribution of wild alleles in yield performance and stability across environments, as well as validating QTLs for pod and seed size. The CSSLs and the recurrent parent Fleur11, used as a check, were assessed using an alpha lattice design in three locations during two consecutive rainy seasons in Senegal, totaling six environments. Our results showed that the chromosome segments from the wild species, in general, have no yield disadvantage and contributed positive variation to yield-related traits. Most of the QTLs detected for pod and seed size in the AB-QTL on linkage groups A07, A08, A09, and B06 were also found in the CSSLs, showing that the CSSLs used in this study are accurate material for QTL validation. Several new QTLs have also been identified. Two CSSLs (12CS_031 and 12CS_069) showed consistently higher pod and seed size than Fleur11 in all environments, suggesting that the QTLs were consistent and stable. Our study opens the way for pyramiding these QTLs for peanut improvement. View Full-Text
Keywords: peanut; wild species; seed size; yield; QTL validation; AB-QTL; CSSL peanut; wild species; seed size; yield; QTL validation; AB-QTL; CSSL
Show Figures

Figure 1

MDPI and ACS Style

Tossim, H.-A.; Nguepjop, J.R.; Diatta, C.; Sambou, A.; Seye, M.; Sane, D.; Rami, J.-F.; Fonceka, D. Assessment of 16 Peanut (Arachis hypogaea L.) CSSLs Derived from an Interspecific Cross for Yield and Yield Component Traits: QTL Validation. Agronomy 2020, 10, 583.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop