Breeding for resistance to lentil Ascochyta blight

Ye, Guoyou; McNeil, DL; Hill, G. D.

doi:10.1046/j.1439-0523.2002.00705.x

Cited by 41 publications

(35 citation statements)

References 38 publications

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“…Sources of partial resistance have been identified in all of the cool season food legumes and the currently available resistance is being used in breeding programmes designed to develop cultivars with improved resistance. Since there are some recent reviews on breeding methods, screening procedures, the ascochyta diseases and biology of the pathogens (Bretag et al 2006;Pande et al 2005;Tivoli et al 2006;Torres et al 2006;Ye et al 2002), we will in this review mainly focus on the recent developments in understanding the genetics of host resistance for each of the major cool season food legumes and point out immediate needs in research that in our opinion will further advance deployment of resistance in managing ascochyta blight in cool season food legumes.…”

Section: Introductionmentioning

confidence: 99%

Resistance to ascochyta blights of cool season food legumes

Muehlbauer

Chen

2007

Eur J Plant Pathol

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Ascochyta blights are the most important diseases of cool season food legumes (peas, lentils, chickpeas, and faba beans) and are found in nearly all production regions. Despite having the same common disease name, the pathogen species differ for each of the crops. These diseases cause serious yield losses under favourable cool and humid conditions. Planting resistant cultivars is often the first choice and most economical means in managing the diseases. Therefore breeding for resistance to ascochyta blights has been an important objective of many cool season food legume research programmes. Systematic screening of germplasm collections at international research centres and other national research programmes have identified useful resistance sources that have been used successfully to breed resistant or tolerant cultivars. Genetic studies have revealed inheritance patterns of the resistance genes. Genetic linkage analyses and QTL mapping have identified molecular markers that could be useful for markerassisted selection and gene pyramiding. In general, research towards developing resistance to ascochyta blights in cool season food legume faces mainly two limitations: the lack of availability of efficient resistance sources and the lack of a good understanding of the variability of the pathogen populations. Research efforts to alleviate these limitations should be pursued. Given that modern technologies of marker development and genomics are available, further advances in deploying resistance to manage ascochyta blights in this group of legume crops will depend on concerted efforts in developing accurate screening procedures with adequate knowledge of pathogen variability and identification of additional sources of resistance.

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Section: Introductionmentioning

confidence: 99%

Resistance to ascochyta blights of cool season food legumes

Muehlbauer

Chen

2007

Eur J Plant Pathol

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“…(Bayaa et al 1994 ). Ye et al ( 2002 ) listed a series of cultivated and wild lentil materials as sources of partial resistance to Ascochyta blight, and Muehlbauer and Chen ( 2007 ) reported that the most prominent among the partially resistant germplasm accessions consisted of lentil accessions PI 339283, PI 374118, ILL5588, ILL5684, PR86-360, and ILL7537. Wild materials have also been used as a source of genes for winter hardiness.…”

Section: Germplasm Collectionmentioning

confidence: 99%

“…Host inoculations of these fungi demonstrated that they were host-specifi c, causing disease only on the host species from which they were isolated (Hernández-Bello et al 2006 ;Peever 2007 ). Tivoli et al ( 2006 ) provided a thorough review on the sources of resistance and screening techniques for Ascochyta blight in lentil, and Ye et al ( 2002 ) gave an account of suitable breeding techniques for the selection of lentils with resistance to Ascochyta blight; partial resistance to the disease is available in germplasm (Muehlbauer and Chen 2007 ).…”

Section: 6mentioning

confidence: 99%

“…Resistance to Ascochyta blight, screening techniques, and breeding methods have been reported (Bayaa et al 1994 ;Ye et al 2002 ;Muehlbauer and Chen 2007 ;Tivoli et al 2006 ). The genetic control of Ascochyta blight resistance was described to be monogenic recessive in spite of having observed transgressive segregations (Tay and Slinkard 1989 ).…”

Section: Biotic Stressesmentioning

confidence: 99%

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Lentil

Fratini¹,

Vega²,

Sánchez³

2014

Broadening the Genetic Base of Grain Legumes

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Among the cool season legume crops, lentil production has displayed the greatest increase, while cropping of many other grain legumes is actually in decline. This increase is most likely due to a convenient fast cooking coupled to a saving of fuel and time -dehulled lentils cook even faster than milled rice. Worldwide lentil consumption has augmented more than twice the rate of human population growth, with lentil consumption over the past 40 years having increased more than any other food crop. Therefore, continued genetic improvement of lentil is essential in all production regions; nevertheless, without access to and use of diverse germplasm, prospects for yield genetic gain in lentil may be diffi cult to accomplish. Wild Lens accessions represent less than 1 % of the world germplasm collection of this genus, this small fraction likely representing the greatest untapped pool of genetic variation in lentil. Germplasm evaluation together with a successful and targeted hybridization allows for an effi cient breeding and selection of varieties adapted to specifi c environments. The aim of the present chapter is to describe the evolutionary aspects of lentil and assess the gene pool and fl ow for crop improvement, considering levels of diversity and agronomic traits of importance, with emphasis placed on wild species and interspecifi c Lens hybridization, to fi nally conclude with molecular aspects and future prospects of lentil breeding.

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“…In lentil, attempts have been made to transfer the alien genes from L. lamottei and L. nigricans to Lens culinaris using L. ervoides as a bridge species along with embryo rescue technique. This offers the possibility of transferring the genes for resistance to ascochyta blight and anthracnose to L. culinaris and broadening the resistance gene base in the cultivated species (Ye et al 2002 ;Tullu et al 2006 ).…”

Section: Use Of Bridge Speciesmentioning

confidence: 99%

Lentil

Kumar¹,

Srivastava²,

Singh³

et al. 2013

Alien Gene Transfer in Crop Plants, Volume 2

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Lentil ( Lens culinaris Medik subsp. Culinaris ) is an important cool season food legume grown over a large area in the Indian subcontinent, west Asia, some parts of Africa and southern Europe. Keeping in view its great demand for nutritious seeds, efforts are underway in different research institutes for development of improved plant types with high yielding ability, disease and insect pest resistance, and seed weight. Improvement of grain quality and nutrition are also among the import breeding objectives. While the cultivated germplasm is being utilized for addressing these objectives, even greater genetic variability has been observed in exotic germplasm and wild accessions. A better understanding of the pre-and postfertilization barriers and use of in vitro techniques and hormonal manipulations has improved the possibilities of obtaining viable and fertile interspecifi c hybrids using these wild genetic resources. Consequently, efforts have been made to transfer alien genes from wild species, viz., L. culinaris ssp. orientalis and L. ervoides to cultivated species. Despite these developments, strategies are still need to be developed to employ distant hybridization and alien gene introgression as a routine practice in genetic improvement of lentil. Further, a lot still requires to be done at molecular levels and gene transfer across genome boundaries through genetic transformation in lentil.

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Breeding for resistance to lentil Ascochyta blight

Abstract: Ascochyta blight, caused by Ascochyta lentis,

Cited by 41 publications

References 38 publications

Resistance to ascochyta blights of cool season food legumes

Resistance to ascochyta blights of cool season food legumes

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