Sources of resistance to Tilletia indica in wheat

Fuentes-Dávila, Guillermo; Rajaram, S.

doi:10.1016/0261-2194(94)90131-7

Cited by 33 publications

(35 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The F3 lines were grown as hill plots at the CIANO research station during the 1992-93 season. Five spikes of each F3 line were artificially inoculated by injecting KB sporidia in the boot as described by Fuentes-Davila (1992). The average percentage of infection was calculated for each F3 line.…”

Section: Methodsmentioning

confidence: 99%

Genetic analysis of resistance to Karnal bunt (Tilletia indica (Mitra)) in bread wheat

1993

View full text Add to dashboard Cite

An analyis of an Fl-based incomplete diallel was conducted involving 11 parents with different levels of resistance to Karnal bunt (Tilletia indica (Mitra)). It demonstrated that general combining ability (GCA) and thus additive or additive × additive gene effects were very important in the inheritance of resistance, accounting for 86.9% of the variation. Further analysis concentrated on F3 lines derived from individual random F2 plants from crosses with resistant varieties having the highest negative GCA effects. It was shown that the varieties Weaver and W499 have single dominant genes of resistance, which are different from each other, and which differ from a single allelic gene in varieties K342 and Cruz Alta. The majority of the crosses did not demonstrate a relationship between Karnal bunt infection and the number of days to heading. Resistant F3 lines varied in the number of days to heading from 80 to 100.

show abstract

Section: Methodsmentioning

confidence: 99%

Genetic analysis of resistance to Karnal bunt (Tilletia indica (Mitra)) in bread wheat

1993

View full text Add to dashboard Cite

show abstract

“…The wheat cultivars with sufficient levels of resistance to KB have been observed among Indian, Chinese, and Brazilian wheats (Fuentes-Dávila and Rajaram 1994). A few lines of durum wheat (Triticum turgidum), common wheat, Aegilops, rye, and barley were also reported to be resistant to Karnal bunt under artificial conditions (Dhaliwal et al1986;Warham et al 1986;Warham 1988;Singh and Dhaliwal 1989;Gill and Aujla 1997).…”

Section: Introductionmentioning

confidence: 99%

Mapping of a resistance gene effective against Karnal bunt pathogen of wheat

et al. 2003

View full text Add to dashboard Cite

A set of 130 wheat recombinant inbred lines (RILs) developed from a cross between parents susceptible (WL711) and resistant (HD29) to Karnal bunt (caused by Tilletia indica), were screened for 3 years with the pathogen populations prevalent in northern India. When 90 simple sequence repeats (SSRs) and 81 amplified fragment length polymorphism (AFLP) loci were mapped on the RILs, markers on chromosomes 2A, 4B and 7B accounted collectively for about one-third of the variation in the disease reaction. The genomic region of largest effect, identified on the long arm of chromosome 4B, reduced Karnal bunt disease by half in three different experiments and accounted for up to 25% of the phenotypic variation for KB reaction. A closely linked SSR marker, GWM538, may be useful in marker-assisted selection for Karnal bunt resistance in wheat.

show abstract

“…The most effective and economical method of disease management is through host plant resistance. The wheat cultivars with sufficient resistance to KB have been observed (Fuentes-Davila and Rajaram 1994). Developing KB resistant wheat cultivars with conventional methods is time-consuming and labour-intensive.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Identification of RAPD markers linked to the karnal bunt resistance genes in wheat

Kumar¹,

Luthra²,

Chawla³

et al. 2006

Biol. plant.

View full text Add to dashboard Cite

A set of 104 wheat recombinant inbred lines (RILs) obtained from a cross between parents resistant (HD 29) and susceptible (WH 542) to karnal bunt (KB) (caused by Neovossia indica) were screened and used to identify random amplified polymorphic DNA (RAPD) markers linked with resistance to karnal bunt as these would allow indirect marker assisted selection of KB resistant genotypes. The two parents were analysed with 92 RAPD primers. A total of 65 primers proved functional by giving scorable polymerase chain reaction (PCR) products. Of these, 21 (32 %) primers detected polymorphism between the two parental genotypes. Using these primers, bulked segregant analysis was carried out on two bulk DNAs, one obtained by pooling DNA from 10 KB resistant RILs and the other similarly derived by pooling 10 KB susceptible RILs. One marker, OPM-20 showed apparent association with resistance to KB. This was confirmed following selective genotyping of individual RILs included in the bulks.Additional key words: Neovossia indica, PCR, recombinant inbred lines, Triticum aestivum.

show abstract

Sources of resistance to Tilletia indica in wheat

Cited by 33 publications

References 6 publications

Genetic analysis of resistance to Karnal bunt (Tilletia indica (Mitra)) in bread wheat

Genetic analysis of resistance to Karnal bunt (Tilletia indica (Mitra)) in bread wheat

Mapping of a resistance gene effective against Karnal bunt pathogen of wheat

Identification of RAPD markers linked to the karnal bunt resistance genes in wheat

Contact Info

Product

Resources

About