Resistance Gene Analogs in Pepper (Capsicum Annuum) and Their Relationship to Phytophthora Capsici Resistance Genes PDF Download

Author: Linda Marie Donnelly
Publisher:
ISBN:
Category : Capsicum annuum
Languages : en
Pages : 114

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Author: Gregory Martin Vogel
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Phytophthora blight, caused by the oomycete pathogen Phytophthora capsici, is a devastating disease of various vegetable crops, including squash (Cucurbita pepo) and pepper (Capsicum annuum). Options for host resistance to Phytophthora blight vary dramatically between these two crops. In squash, no sources of complete resistance have been described, although variation for quantitative disease resistance exists in both commercial and unadapted germplasm. In pepper, on the other hand, landraces demonstrating complete or near-complete disease resistance have been identified and used in breeding. However, varieties with durable resistance to diverse pathogen isolates have not been developed. In order to contribute to genetic solutions for disease control in these two crops, genetic variation in squash associated with quantitative disease resistance as well as genetic variation in P. capsici associated with virulence on distinct pepper genotypes were characterized. In squash, two quantitative trait locus (QTL) mapping approaches were used in a zucchini _ gray zucchini population, resulting in the discovery of six QTL, representing the first reported for Phytophthora blight resistance in C. pepo. In order to identify genetic variants in P. capsici associated with virulence on pepper, a collection of 252 pathogen isolates, predominantly from vegetable production regions of New York state, was genotyped at over 100,000 single-nucleotide polymorphism (SNP) loci using genotyping-by-sequencing. The utility of this isolate collection as a genetic resource was demonstrated by the successful identification of SNPs associated with mating type and sensitivity to the fungicide mefenoxam via a genome-wide association study (GWAS). Inoculation of 117 genetically distinct isolates onto a panel of 16 pepper accessions revealed a significant effect of inter-species genotype-genotype interactions on disease outcomes. However, the only SNP associated with virulence in a GWAS demonstrated an effect that was consistent across pepper genotypes, suggesting that genes involved in host-specific virulence may be of smaller effect and more challenging to map. The results of these genetic experiments - conducted on both pathogen and host - are expected to inform efforts to breed vegetable crops with durable Phytophthora blight resistance.

Author: Byoung-Cheorl Kang
Publisher: CRC Press
ISBN: 1466577452
Category : Science
Languages : en
Pages : 184

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Book Description
Peppers and eggplants are two leading vegetable crops produced and consumed worldwide. To facilitate the breeding for agronomical traits such as disease resistance and quality, diverse molecular genetic studies have been carried out. Recent achievements on pepper genome sequencing and trait-linked marker development have enabled the cloning of genes involved in useful traits. This book explores the agronomical and evolutionary characteristics of peppers and eggplants and the results of molecular genetic studies. Topics include molecular linkage maps and candidate gene approaches in capsicum and the structure of the pepper genome.

Author: Mallappa Kumara Swamy
Publisher: Springer Nature
ISBN: 9819977797
Category :
Languages : en
Pages : 574

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Author: Chittaranjan Kole
Publisher: Springer Science & Business Media
ISBN: 3540345361
Category : Science
Languages : en
Pages : 397

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Book Description
Vegetables contains reviews in 12 chapters contributed by 31 authors from 10 countries. The impressive work that has been done on most of these crops is presented in this volume. Genome projects already initiated on vegetable crops, particularly on Solanaceae and Brassicaceae species, may ignite further interest in other vegetables as well.

Author:
Publisher:
ISBN:
Category : Eggplant
Languages : en
Pages : 308

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Author: V. M. Russo
Publisher: CABI
ISBN: 9781845937843
Category : Electronic books
Languages : en
Pages : 308

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Book Description
The group of plants known as 'peppers' is diverse, containing types that contribute to the fresh and processed food markets as well as varieties that are used in pharmaceuticals and other non-food commercial products. Peppers originally developed in tropical regions, but are now grown and used in every country where it is possible to grow them, including in areas where production is difficult. This book examines peppers from historical, genetic, physiological and production perspectives, following the development of the cultivated crop from the wild type. Diverse examples of pod types and thei.

Author: Ani A. Elias
Publisher: CRC Press
ISBN: 1000655954
Category : Science
Languages : en
Pages : 233

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Book Description
Genomic selection (GS) is a promising tool in the field of breeding especially in the era where genomic data is becoming cheaper. The potential of this tool has not been realized due to its limited adaptation in various crops. Marker Assisted Selection (MAS) has been the method of choice for plant breeders while using the genomic information in the breeding pipeline. MAS, however, fails to capture vital minor gene effects while focusing only on the major genes, which is not ideal for breeding advancement especially for quantitative traits such as yield. The main aim of statistical methodologies coming under the umbrella of GS on using the whole genome information is to predict potential candidates for breeding advancement while optimizing the use of resources such as land, manpower, and most importantly time. Lack of proper understanding of the methods and their applications is one of the reasons why breeders shy away from this tool. The book is meant for biologists, especially breeders, and provides a comprehensive idea of the statistical methodologies used in GS, guidance on the choice of models, and design of datasets. The book also encourages the readers to adopt GS by demonstrating the current scenarios of these models in some of the important crops among oilseeds, vegetables, legumes, tuber crops, and cereals. For ease of implementation of GS, the book also provides hands-on scripts on GS data design and modeling in a popular open-source statistical program. Additionally, prospective in GS model development and thereby enhancement in crop improvement programs is discussed.

Author: Ratikanta Maiti
Publisher: CRC Press
ISBN: 1000001490
Category : Medical
Languages : en
Pages : 527

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Book Description
This new volume emphasizes the drastic quantitative and qualitative transformation of our surrounding environment and looks at bioresource management and the tools needed to manageenvironmental stresses. This unique compilation and interpretation of concrete scientific ventures undertaken by environmental specialists at the global level explores research dedicated to the management of natural resources by controlling biotic and abiotic factors that make the earth vulnerable to these stresses. The chapter authors look at all types of bioresources on earth and their management at times of stress/crisis, focusing on the need for documentation, validation, and recovery of ethnic indigenous knowledge and practices that could have great impact in stress management. The book looks at topics in nature and changing climate management, adaptation, and mitigation, such as the effects of climate change on agriculture and horticulture, on timber harvesting, and on forest resources. Also specifically discussed are crop resources management, seed crops, tree seedlings, soil management, and conservation practices. The volume also includes chapters on animal resources management.

Author: Satbir Singh Gosal
Publisher: Springer Nature
ISBN: 3030472981
Category : Science
Languages : en
Pages : 457

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Book Description
Plant improvement has shifted its focus from yield, quality and disease resistance to factors that will enhance commercial export, such as early maturity, shelf life and better processing quality. Conventional plant breeding methods aiming at the improvement of a self-pollinating crop, such as wheat, usually take 10-12 years to develop and release of the new variety. During the past 10 years, significant advances have been made and accelerated methods have been developed for precision breeding and early release of crop varieties. This edited volume summarizes concepts dealing with germplasm enhancement and development of improved varieties based on innovative methodologies that include doubled haploidy, marker assisted selection, marker assisted background selection, genetic mapping, genomic selection, high-throughput genotyping, high-throughput phenotyping, mutation breeding, reverse breeding, transgenic breeding, shuttle breeding, speed breeding, low cost high-throughput field phenotyping, etc. It is an important reference with special focus on accelerated development of improved crop varieties.