Resistance in Soybeans to the lvlexican Bean Beetle. I. Sources of Resistance<sup>1</sup>

Duyn, John W. Van; Turnipseed, S. G.; Maxwell, James

doi:10.2135/cropsci1971.0011183x001100040035x

Cited by 95 publications

(53 citation statements)

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“…Rareness at SSR loci, especially in plants with rare alleles at multiple loci, may indicate that these landraces have had limited genetic exchange with other landraces, and therefore may have rare alleles for various (functional) traits as well. As genetic improvement of a trait often involves Wnding useful variants which may be present at a low frequency (Chamberlain and Bernard 1968;Van Duyn et al 1971;Anand and Gallo 1984;Anand et al 1988; Coordinative Group of Evaluation of SCN 1993), this could be a means of identifying plants with possible useful alleles. Hyten et al (2006) found that 79% of the low-frequency sequence variants in the Asian Landrace collection were not present in the elite cultivars, which suggests that the variation useful for genetic improvement is not yet present in the elite cultivars.…”

Section: Discussionmentioning

confidence: 99%

Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

et al. 2008

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The Chinese genebank contains 23,587 soybean landraces collected from 29 provinces. In this study, a representative collection of 1,863 landraces were assessed for genetic diversity and genetic diVerentiation in order to provide useful information for eVective management and utilization. A total of 1,160 SSR alleles at 59 SSR loci were detected including 97 unique and 485 low-frequency alleles, which indicated great richness and uniqueness of genetic variation in this core collection. Seven clusters were inferred by STRUCTURE analysis, which is in good agreement with a neighbor-joining tree. The cluster subdivision was also supported by highly signiWcant pairwise F st values and was generally in accordance with diVerences in planting area and sowing season. The cluster HSuM, which contains accessions collected from the region between 32.0 and 40.5°N, 105.4 and 122.2°E along the central and downstream parts of the Yellow River, was the most genetically diverse of the seven clusters. This provides the Wrst molecular evidence for the hypotheses that the origin of cultivated soybean is the Yellow River region. A high proportion (95.1%) of pairs of alleles from diVerent loci was in LD in the complete dataset. This was mostly due to overall population structure, since the number of locus pairs in LD was reduced sharply within each of the clusters compared to the complete dataset. This shows that population structure needs to be accounted for in association studies conducted within this collection. The low value of LD within the clusters can be seen as evidence that much of the recombination events in the past have been maintained in soybean, Wxed in homozygous self-fertilizing landraces.

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Section: Discussionmentioning

confidence: 99%

Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

et al. 2008

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“…In the early 1970s, three soybean cultivars (PI171451: 'Kosamame'; PI227687: 'Miyako White'; PI229358: 'Sodendaizu') were reported to have resistance to Mexican bean beetle (Epilachna varivestis Mulsant) (Van Duyn et al 1971). They were also found to have resistance to other herbivorous insects, including Spodoptera species (Hatchett et al 1976, Lambert andKilen 1984a).…”

Section: Introductionmentioning

confidence: 99%

Antibiotic Effect of Insect-resistant Soybean on Common Cutworm (Spodoptera litura) and its Inheritance

et al. 2004

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The common cutworm (Spodoptera litura Fabricius; Lepidoptera: Noctuidae) is a menace to soybean (Glycine max (L.) Merr.) production in southwestern Japan. We have been evaluating soybean germplasm for resistance to common cutworm in order to develop resistant cultivars and have found a cultivar named 'Himeshirazu', which is distinguished by its high level of resistance. We compared the antibiosis of Himeshirazu with those of 'Fukuyutaka' (susceptible) and 'Sodendaizu' (resistant). Himeshirazu depressed the weights of individual common cutworm larvae and prolonged the duration of the instar stage, compared with the other two cultivars. We analyzed the inheritance of this antibiosis in an F 2 population derived from a cross between Fukuyutaka and Himeshirazu. The broad-sense heritability of the antibiosis was estimated as 71.3 %. The segregation pattern in the F 2 progeny suggested that a recessive factor controlled a considerable part of the antibiosis. From the relationship between the antibiosis and the genotype of a simple sequence repeat marker, Satt220, in the F 2 progeny, we inferred that the locus of the putative recessive factor was located on linkage group M.

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“…The search for such resistant germplasms began in the 1960s in the United States. Initially, three plant introduction (PI) lines from Japan (PI229358, PI227687 and PI171451) were shown to exhibit resistance to the Mexican bean beetle [Epilachna varivestis (Mulsant)] 50 . These lines were confirmed to have resistance to other herbivorous insects.…”

Section: Genetic Resources For Resistance To Herbivorous Insectsmentioning

confidence: 99%

“…When the breeding program to develop CCW-resistant soybean in Japan started in 1977, some genetic resources resistant to some lepidopteran herbivorous insects had been reported in the United States 50 . The screening of CCW-resistant germplasms in Japan took advantage of these preceding studies.…”

Section: Genetic Resources For Resistance To Herbivorous Insectsmentioning

confidence: 99%

Genetic Study on Resistance to the Common Cutworm and Other Leaf-eating Insects in Soybean

Komatsu

Takahashi

Nakazawa

2010

JARQ

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The common cutworm (Spodoptera litura Fabricius) is a major pest of soybean [Glycine max (L.) Merr.] in southwestern Japan, and other lepidopteran insects damage soybean crops in the United States. Plant resistance to these insects can contribute to integrated pest management. To develop soybean cultivars with insect resistance, resistant germplasms have been identified and used as resistance donor parents. The resistance conferred by their genes has been studied from genetical, morphological, and physiological perspectives. The morphological and physiological approaches have succeeded to some degree, but the main cause of the resistance remains unknown. However, genetic studies have made progress since molecular biological approaches became possible in soybean. Two quantitative trait loci (QTL) for the common cutworm resistance and 23 QTL for other leaf-eating insect resistance have been detected. Actual effects of the major QTL have been confirmed using near-isogenic lines. This progress in genetic studies of the resistance enables the development of elite soybean cultivars with insect resistance, despite the poor agronomic characteristics of resistance donor parents. The present review summarizes the recent progress in resistance to the common cutworm and other insects in soybean.

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Resistance in Soybeans to the lvlexican Bean Beetle. I. Sources of Resistance¹

Cited by 95 publications

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Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

Antibiotic Effect of Insect-resistant Soybean on Common Cutworm (Spodoptera litura) and its Inheritance

Genetic Study on Resistance to the Common Cutworm and Other Leaf-eating Insects in Soybean

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Resistance in Soybeans to the lvlexican Bean Beetle. I. Sources of Resistance1

Cited by 95 publications

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Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

Genetic structure and diversity of cultivated soybean (Glycine max (L.) Merr.) landraces in China

Antibiotic Effect of Insect-resistant Soybean on Common Cutworm (Spodoptera litura) and its Inheritance

Genetic Study on Resistance to the Common Cutworm and Other Leaf-eating Insects in Soybean

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Resistance in Soybeans to the lvlexican Bean Beetle. I. Sources of Resistance¹