Molecular diversity and plant disease resistance: An electrophoretic comparison of near-isogenic lines of wilt-resistant or -susceptible Pisum sativum L. cv. William Massey

Hunt, John S.; Barnes, M. F.

doi:10.1007/bf00021649

Cited by 15 publications

(4 citation statements)

References 20 publications

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“…However, Clarke (1979) suggested that biochemical variation may have a direct role in withstanding pest or pathogen pressure. One possible example of this has been found in peas, where an esterase isozyme is closely correlated with wilt resistance (Hunt and Barnes 1982). If this proposal is correct, then it is clear that E. plantagineum in Australia possesses a high level of biochemical flexibility which any biological control program must endeavour to overcome.…”

Section: Discussionmentioning

confidence: 99%

Multilocus Diversity in an Outbreeding Weed, Echium piantagineum L.

Brown¹,

Burdon²

1983

Aust. Jnl. Of Bio. Sci.

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A population of E. plantagineum was surveyed for its genetic structure at 23 isozyme loci. More than half (13) of these loci were polymorphic, with an average number of three alleles per locus, a gene diversity of 38% and heterozygosity of 35%. More importantly, the distribution of multilocus heterozygosity over individuals was found to approximate that assuming independence among loci or no linkage disequilibrium. The population consisted of a vast array of multilocus genotypes. This pattern indicates that the outbreeding system encourages recombination sufficient to outweigh the effects on multilocus structure of bottlenecks in population size. Genic and genotypic variation presumably allows high levels of biochemical flexibility in populations of E. plantagineum. Such flexibility could hamper attempts at biological control.

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Section: Discussionmentioning

confidence: 99%

Multilocus Diversity in an Outbreeding Weed, Echium piantagineum L.

Brown¹,

Burdon²

1983

Aust. Jnl. Of Bio. Sci.

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“…At ICARDA, breeding for resistance to vascular wilt and a study of the linkage of resistance to isozyme and RFLP markers have been started, the latter in collaboration with Washington State University. Resistance to Fusarium wilt (race 1) in pea is controlled by a locus closely linked to Est-s, coding a seed esterase (Hunt & Barnes, 1982) . In view of the extent of conserved linkage groups between pea and lentil, this possible linkage is worth investigating in lentil .…”

Section: Wiltmentioning

confidence: 99%

Current and future strategies in breeding lentil for resistance to biotic and abiotic stresses

Erskine

Tufail

Russell³

et al. 1993

Euphytica

105

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Lentil production is limited by lack of moisture and unfavorable temperatures throughout its distribution . Waterlogging and salinity are only locally important . Progress has been made in breeding for tolerance to drought through selection for an appropriate phenology and increased water use efficiency and in breeding for winter hardiness through selection for cold tolerance .The diseases rust, vascular wilt, and Ascochyta blight, caused by Uromyces viciae fabae, Fusarium oxysporum f. sp . lentis, and Ascochyta fabae f . sp . lentis, respectively, are the key fungal pathogens of lentil . Cultivars with resistance to rust and Ascochyta blight have been released in several countries and resistant sources to vascular wilt are being exploited . Sources of resistance to several other fungal and viral diseases of regional importance are known . In contrast, although the pea leaf weevil (Sitona spp .) and the parasitic weed broomrape (Orobanche spp .), and to a lesser extent the cyst nematode (Heterodera ciceri), are significant yield reducers of lentil, no sources of resistance to these biotic stresses have been found . Directions for future research in lentil on both biotic and abiotic stresses are discussed .

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“…The first molecular tag reported for an economically important gene in pea was an esterase polymorphism tightly linked to Fw, the gene bestowing resistance to race I of Fusarium wilt (Hunt & Barnes, 1982 can be followed in segregating populations by scoring ADH-l (Weeden & Provvidenti, 1988) . Stocks in which the rare "fast" allele at Adh-I has been linked Outline of current linkage map for Piston .caricum .…”

Section: The Tagging Of Disease Resistance Genes In Peamentioning

confidence: 99%

Identifying and mapping genes of economic significance

Weeden

Timmerman²,

Lü

1993

Euphytica

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An understanding of the genetic basis of characters of commercial importance is critical if a breeder is attempting to move such characters into breeding material . A number of particularly interesting characters or genes have been identified in cool season food legumes, and in pea many of these have been "tagged" by molecular markers such as allozyme or DNA polymorphisms . This process of mapping and tagging genes has been greatly accelerated by recent developments in molecular biology. It appears that markers will soon be available for many genes in lentil, faba bean, and chickpea and that genetic knowledge developed in one crop will have significant applications in the other cool season food legumes .

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Molecular diversity and plant disease resistance: An electrophoretic comparison of near-isogenic lines of wilt-resistant or -susceptible Pisum sativum L. cv. William Massey

Cited by 15 publications

References 20 publications

Multilocus Diversity in an Outbreeding Weed, Echium piantagineum L.

Multilocus Diversity in an Outbreeding Weed, Echium piantagineum L.

Current and future strategies in breeding lentil for resistance to biotic and abiotic stresses

Identifying and mapping genes of economic significance

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