Genetic basis of resistance to sugarcane mosaic virus in European maize germplasm

Melchinger, Albrecht E.; Kuntze, L.; Gumber, R. K.; Lübberstedt, Thomas; Fuchs, E.

doi:10.1007/s001220050851

Cited by 65 publications

(52 citation statements)

References 16 publications

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“…Mcd1 and mcd2 both map to chromosomal regions reported to contain genes or QTL for other phylogenetically dissimilar viral and fungal pathogens (Collins et al 1999;Redinbaugh et al 2004). Similarl to mcd1, QTL or genes conferring resistance to maize mosaic virus (Mv1s, Ming et al 1997), sugarcane mosaic virus (Scm2, Melchinger et al 1998), and wheat streak mosaic virus (Wsm2, McMullen et al 1994) are all tightly linked to umc102. In addition to virus resistance, this region carries genes encoding proteins with the nucleotide-binding site-leucine-rich repeat (NBS-LRR) motifs characteristic of resistance genes and is associated with the complex Rp3 locus for rust resistance (Collins et al 1999;Webb et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Identification of quantitative trait loci controlling resistance to maize chlorotic dwarf virus

et al. 2004

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Ineffective screening methods and low levels of disease resistance have hampered genetic analysis of maize (Zea mays L.) resistance to disease caused by maize chlorotic dwarf virus (MCDV). Progeny from a cross between the highly resistant maize inbred line Oh1VI and the susceptible inbred line Va35 were evaluated for MCDV symptoms after multiple virus inoculations, using the viral vector Graminella nigrifrons. Symptom severity scores from three rating dates were used to calculate area under the disease progress curve (AUDPC) scores for vein banding, leaf twist and tear, and whorl chlorosis. AUDPC scores for the F(2) population indicated that MCDV resistance was quantitatively inherited. Genotypic and phenotypic analyses of 314 F(2) individuals were compared using composite interval mapping (CIM) and analysis of variance. CIM identified two major quantitative trait loci (QTL) on chromosomes 3 and 10 and two minor QTL on chromosomes 4 and 6. Resistance was additive, with alleles from Oh1VI at the loci on chromosomes 3 and 10 contributing equally to resistance.

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Section: Discussionmentioning

confidence: 99%

Identification of quantitative trait loci controlling resistance to maize chlorotic dwarf virus

et al. 2004

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“…Two major resistance loci, Scmv1 on bin 6.00/01 and Scmv2 on bin 3.04/05, were identified to confer resistance to SCMV in different populations (Melchinger et al 1998;Xia et al 1999;Xu et al 1999;). The Scmv2 was delimited to a region of 1.34 Mb covering four candidate genes by using a large isogenic population segregating for Scmv2, but not Scmv1 (Ingvardsen et al 2010).…”

Section: Genes Conferring Resistance To Biotic Stresses In Maizementioning

confidence: 98%

Qualitative and Quantitative Trait Polymorphisms in Maize

Yang

2013

Diagnostics in Plant Breeding

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“…In sugarcane crop improvement is impeded by its narrow gene pool, complex genome, and poor fertility, caused by genetic recombination as well as long breeding selection cycle. The success of sugarcane breeding program therefore lies in the proper choice of rich and genetically diverse parents.The genetically diverse parents may be selected on the basis of diverse geographical distribution of the genotypes, information on agronomic characters (Melchinger, 1998). Normally in sugarcane breeding programs, the parental lines are selected on the basis of agronomic characters and pedigree records, bi-parental crosses and polycrosses between elite genotypes are used.…”

Section: Introductionmentioning

confidence: 99%

Estimation of genetic diversity among sugarcane (Saccharum species complex) clones

Bisht

Jeena

Koujalagi

et al. 2017

JANS

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Abstract:The experimental materials consisted of 36 sugarcane clones including two checks (Co Pant 97222 and Co Pant 3220). Analysis of variance revealed significant differences among all the clones for all the traits under study namely no. of millable canes, cane height, single cane weight, juice sucrose percent , purity percent , cane yield and CCS yield except cane thickness, juice brix and juice extraction percent. The divergence studies through Mahalanobis D 2 statistics grouped the 36 genotypes into eleven clusters. The maximum numbers of genotypes (21) were grouped in clusterI and the lowest(1)in cluster VI,VII,VIII,IX,X and XI. Members of cluster VII and XI (46.48) were found to be genetically most diverse on the basis of their inter cluster difference as opposite to clusters I and II (10.77) which are closely related. Cane height contributed maximum (15.397%) towards genetic divergence followed by Single cane weight (14.762%) and no. of millable cane (13.016%). These characters were considered to be most important for the genetic diversity. Lowest contribution was made by juice purity percent (4.286%) followed by Cane thickness(7.301%),Juice extraction percent (7.619%). Genetic diversity is important for sustainable production since greater losses of characteristics in any population limits its chances of survival. Little to no genetic diversity makes crops extremely susceptible to widespread biotic and abiotic stresses. Genetic diversity can be assessed by Mahalanobis D 2 statistic, which is a morphometric method and a powerful tool in quantifying the degree of divergence at genotypic level.

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Genetic basis of resistance to sugarcane mosaic virus in European maize germplasm

Cited by 65 publications

References 16 publications

Identification of quantitative trait loci controlling resistance to maize chlorotic dwarf virus

Identification of quantitative trait loci controlling resistance to maize chlorotic dwarf virus

Qualitative and Quantitative Trait Polymorphisms in Maize

Estimation of genetic diversity among sugarcane (Saccharum species complex) clones

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