NDLI: SSR analysis of cultivated groundnut (Arachis hypogaea L.) germplasm resistant to rust and late leaf spot diseases

Content Provider	Springer Nature Link
Author	Mace, E. S. Phong, D. T. Upadhyaya, H. D. Chandra, S. Crouch, J. H.
Copyright Year	2006
Abstract	Cultivated groundnut (Arachis hypogaea L.) is an agronomically and economically important oilseed crop grown extensively throughout the semi-arid tropics of Asia, Africa and Latin America. Rust (Puccinia arachidis) and late leaf spot (LLS, Phaseoisariopsis personata) are among the major diseases causing significant yield loss in groundnut. The development of varieties with high levels of resistance has been constrained by adaptation of disease isolates to resistance sources and incomplete resistance in resistant sources. Despite the wide range of morphological diversity observed in the cultivated groundnut gene pool, molecular marker analyses have thus far been unable to detect a parallel level of genetic diversity. However, the recent development of simple sequence repeat (SSR) markers presents new opportunities for molecular diversity analysis of cultivate groundnut. The current study was conducted to identify diverse disease resistant germplasm for the development of mapping populations and for their introduction into breeding programs. Twenty-three SSRs were screened across 22 groundnut genotypes with differing levels of resistance to rust and LLS. Overall, 135 alleles across 23 loci were observed in the 22 genotypes screened. Twelve of the 23 SSRs (52%) showed a high level of polymorphism, with PIC values ≥0.5. This is the first report detecting such high levels of genetic polymorphism in cultivated groundnut. Multi-dimensional scaling and cluster analyses revealed three well-separated groups of genotypes. Locus by locus AMOVA and Kruskal–Wallis one-way ANOVA identified candidate SSR loci that may be valuable for mapping rust and LLS resistance. The molecular diversity analysis presented here provides valuable information for groundnut breeders designing strategies for incorporating and pyramiding rust and late leaf spot resistances and for molecular biologists wishing to create recombinant inbred line populations to map these traits.
Starting Page	317
Ending Page	330
Page Count	14
File Format	PDF
ISSN	00142336
Journal	Euphytica
Volume Number	152
Issue Number	3
e-ISSN	15735060
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-11-23
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Groundnut SSR loci Rust resistance Late leaf spot resistance Diversity analysis Ecology Plant Sciences Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Horticulture Agronomy and Crop Science

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SSR Analysis Of Cultivated Groundnut (Arachis Hypogaea L.) Germplasm Resistant To Rust And Late Leaf Spot Diseases

GENETIC DIVERSITY ANALYSIS AND IDENTIFICATION OF SSR MARKERS LINKED TO LATE LEAF SPOT AND RUST DISEASES IN GROUNDNUT (Arachis hypogaea L.)

SSR markers associated for late leaf spot disease resistance by bulked segregant analysis in groundnut (Arachis hypogaea L.)

SSR Markers Associated For Late Leaf Spot Disease Resistance By Bulked Segregant Analysis In Groundnut (Arachis Hypogaea L.)

Components of resistance to late leaf spot and rust among interspecific derivatives and their significance in a foliar disease resistance breeding in groundnut (Arachis hypogaea L.)

STUDIES ON EARLY AND LATE LEAF SPOT DISEASES OF GROUNDNUT (Arachis hypogaea L.)

Components Of Resistance To Late Leaf Spot And Rust Among Interspecific Derivatives And Their Significance In A Foliar Disease Resistance Breeding In Groundnut (Arachis Hypogaea L.)

Simple Sequence Repeat (SSR)-based Diversity Analysis Of Groundnut (Arachis Hypogaea L.) Germplasm Resistant To Bacterial Wilt

GENE ACTION AND MARKER ASSISTED BACKCROSS STUDIES FOR LATE LEAF SPOT AND RUST RESISTANCE IN GROUNDNUT (Arachis hypogaea L.)

SSR analysis of cultivated groundnut (Arachis hypogaea L.) germplasm resistant to rust and late leaf spot diseases

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