Registration of TxAG‐6 and TxAG‐7 Peanut Germplasm Lines

Simpson, C. E.; Nelson, Scot; Starr, J. L.; Woodard, K. E.; Smith, O. D.

doi:10.2135/cropsci1993.0011183x003300060079x

Cited by 130 publications

(108 citation statements)

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“…The present study was based on 96 genotypes, comprised of 92 accessions of the US peanut minicore collection, a subline, UF 439-16-10-3-2, of the US variety Florunner (Norden et al 1969), probable diploid progenitors Arachis duranensis K7988 and Arachis ipae¨nsis K30076 (Krapovickas and Gregory 1994;Seijo et al 2007), and the synthetic amphidiploid TxAG-6 (Simpson et al 1993) (Table 1). All genotypes used in the study except the diploid progenitors were tetraploids.…”

Section: Plant Materialsmentioning

confidence: 99%

A first insight into population structure and linkage disequilibrium in the US peanut minicore collection

et al. 2011

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Knowledge of genetic diversity, population structure, and degree of linkage disequilibrium (LD) in target association mapping populations is of great importance and is a prerequisite for LD-based mapping. In the present study, 96 genotypes comprising 92 accessions of the US peanut minicore collection, a component line of the tetraploid variety Florunner, diploid progenitors A. duranensis (AA) and A. ipae¨nsis (BB), and synthetic amphidiploid accession TxAG-6 were investigated with 392 simple sequence repeat (SSR) marker bands amplified using 32 highly-polymorphic SSR primer pairs. Both distance-and model-based (Bayesian) cluster analysis revealed the presence of structured diversity. In general, the wild-species accessions and the synthetic amphidiploid grouped separately from most minicore accessions except for COC155, and were eliminated from most subsequent analyses. UPGMA analysis divided the population into four subgroups, two major subgroups representing subspecies fastigiata and hypogaea, a third group containing individuals from each subspecies or possibly of mixed ancestry, and a fourth group, either consisting of COC155 alone if wild species were excluded, or of COC155, the diploid species, and the synthetic amphidiploid. Modelbased clustering identified four subgroups-one each for fastigiata and hypogaea subspecies, a third consisting of individuals of both subspecies or of mixed ancestry predominantly from Africa or Asia, and a fourth group, consisting of individuals predominantly of var fastigiata, peruviana, and aequatoriana accessions from South America, including COC155. Analysis of molecular variance (AMOVA) revealed statistically-significant (P \ 0.0001) genetic variance of 16.87% among subgroups. A total of 4.85% of SSR marker pairs revealed significant LD (at r 2 C 0.1). Of the syntenic marker pairs separated by distances \ 10 cM, 11-20 cM, 21-50 cM, and [ 50 cM, 19.33, 5.19, 6.25 and 5.29% of marker pairs were found in strong LD (P B 0.01), in accord with LD extending to great distances in self pollinated crops. A threshold value of r 2 [ 0.035 was found to distinguish mean r 2 values of linkage distance groups statistically from the mean r 2 values of unlinked markers; LD was found to extend to 10 cM over the entire minicore collection by this criterion. However, there were large differences in r 2 values among marker pairs even among tightly-linked markers. The implications of these findings with regard to the possibility of using Vikas Belamkar-This work was performed in partial fulfillment of the requirements for the Master of Science degree.

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Section: Plant Materialsmentioning

confidence: 99%

A first insight into population structure and linkage disequilibrium in the US peanut minicore collection

et al. 2011

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“…The crosses were made by Dr. Charles SIMPSON according to the following scheme: (FlorunnerTxAG x-6) BC3F3: 6 (C.E. SIMPSON, 1991;Simpson et al 1993). PC79-79 (Virginia) is from ISRA-CNRA in Senegal CN94C (Spanish) type SH470P (Spanish) are INERA-Burkina.…”

Section: Methodsmentioning

confidence: 99%

Diallel analysis of pod yield and 100 seeds weight in peanut (<i>Arachis hypogaea</i> L.) using GRIFFING and HAYMAN methods.

Neya¹,

Elise²,

Koïta³

et al. 2017

J. App. Bioscience.

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Neya et al., J. Appl. Biosci. 2017 Diallel analysis of pod yield and 100 seeds weight in peanut (Arachis hypogaea L.) using GRIFFING and HAYMAN methods. 11619Journal of Applied Biosciences 116: 11619-11627 ISSN 1997-5902 Diallel analysis of pod yield and 100 seeds weight in peanut (Arachis hypogaea L.) using GRIFFING and HAYMAN methods. ABSTRACT Objectives: The lack of information on yield and yield components are an obstacle in peanut (Arachis hypogaea L.) breeding for productivity improvement in BURKINA FASO. This work is to elucidate the mode of heritability of genes that govern 100 seed weight and pod yield, and identify the best parents for recommendation in hybridization programs. Materials and methods: A 6 x 6 full diallel with breeding lines such as GM656, NAMA, PC79-79, AS, SH470P and CN94C; was conducted. Two models were used, one of GRIFFING (1956) and the second of HAYMAN (1954), to detect the general (GCA) and specific (SCA) combining ability. GCA/SCA ˂ 1 for 100 seed weight and GCA / SCA ˃ 1 for pod yield. D-H1 difference reveals existence of an over dominance for 100 seed weight and partial dominance for pods yield. Heritability in the narrow sense is 48.7% for the pod yield and 55.3% for the weight of 100 seeds. Conclusion and Application of results:These results show that the pod yield is governed by genes with additive effects and non-additive effects with more additivity effects. However, the weight of 100 seed is essentially governed by genes with additive and non-additive effects with a preponderance of non-additive effects and dominance. HAYMAN graphical analysis indicates that CN94C, SH470P, AS have a lot more genes that control pods yield and 100 seed weight. These breeding lines may be recommended in hybridization for improvement of productivity. The importance of Reciprocal effects (RCE) shows that we must consider maternal effects in hybridization for breeding programs. In these programme

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“…Although the use of the accessions available in germplasm banks is low (Nass et al 2012), the initial efforts to introduce genes from wild species into cultivated peanut started in the 1970s, and were focused on leaf spots resistance (Stalker et al 1979, Simpson et al 1993. The laborious and time consuming process of successive backcrossings to achieve the standards of quality and yield for the peanut market is one of the main difficulties reported by peanut breeders worldwide (Ouedrago et al 1994, Holbrook et al 2014.…”

Section: Introductionmentioning

confidence: 99%

Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies

Suassuna

Moretzsohn

et al. 2015

Crop Breed. Appl. Biotechnol.

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Registration of TxAG‐6 and TxAG‐7 Peanut Germplasm Lines

Cited by 130 publications

References 0 publications

A first insight into population structure and linkage disequilibrium in the US peanut minicore collection

A first insight into population structure and linkage disequilibrium in the US peanut minicore collection

Diallel analysis of pod yield and 100 seeds weight in peanut (<i>Arachis hypogaea</i> L.) using GRIFFING and HAYMAN methods.

Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies

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