Download or read book Breeding for Resistance to Fusarium Root Rot in Bean Phaseolus Vularis L written by Kristin Ann Schneider and published by . This book was released on 1999 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Breeding for Resistance to Fusarium Root Rot in Beans Phaseolus Vulgaris L written by Anna Geertruida Boomstra and published by . This book was released on 1975 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Inheritance of Resistance to Fusarium Root Rot in Beans written by Alonso Martinez Bravo and published by . This book was released on 1967 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Breeding for Resistance to Soil borne Pathogens of Common Bean Phaseolus Vulgaris L written by Stephen Beebe and published by . This book was released on 1978 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inheritance of Resistance to Fusarium Root Rot in Phaseolus Vulgaris L and Phaseolus Coccineus L written by Hassan Ahmed Azzam and published by . This book was released on 1957 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progenies of two bean crosses were studied for inheritance of resistance to dry root rot caused by Fusarium solani f. phaseoli. O.S.C. 22 (P. vulgaris) was used in both crosses as the susceptible parent. A Mexican line (P. vulgaris) and a line 2014 of the runner bean (P. coccineus) were used as the tolerant (partially resistant) parents. Artificial inoculation was accomplished by dipping seeds in a thick emulsion of macerated agar media. A disease rating system of 0-5 was used, with 0 indicating no infection and 5 very severe infection. The disease average of all plants within a given seed lot was taken as the best indication for tolerance or susceptibility. The parents and their progenies were tested in both greenhouse and field. Differences between the reciprocal crosses of 22 x Mexican were not observed. The reciprocal cross of 22 x 2014 was not maintained due to the difficulty of securing seeds when 2014 was used as the female parent. In both crosses the F1 showed that tolerance was recessive. The observed ratios in the backcross generation of the cross 22 x Mexican fit the theoretical ratio of 1 tolerant to 7 susceptible indicating the action of three major genes. The F2 generation, in both crosses, showed a wider spread of disease ratings than either parent and occupied most, if not all, disease classes. The F2 generation of the cross 22 x 2014 indicated the possible action of two major recessive genes conditioning tolerance. The F2 of the cross 22 x Mexican exhibited no close fit to definite genetic ratios. Analysis of F3 data for the interspecific cross 22 x 2014 indicated that two or three major recessive genes conditioned the tolerance of P. coccineus. Difficulties of obtaining definite genetic ratios in this cross may be due to modifying genes, as well as to lack of exact control of environment in the various tests. The F3 progeny of 22 x Mexican indicated the possible action of three major recessive genes, or perhaps fewer major genes and several modifiers conditioning resistance. It is recognized that the results reported in this study represent an approximation for the inheritance of resistance to Fusarium root rot. There was no significant relation between root vigor of P. coccineus and resistance to root rot. Pigmentation in the cross 22 x Mexican indicated a simple inheritance of one dominant gene for pigmented over green. Seed color inheritance in the same cross indicated the interaction of two major genes and gave in the F2 a ratio of 9 black: 3 brown: 4 white. A very high association was observed between seed color and plant color. No clear relation between pigmentation and resistance to root rot was found. The recessive nature of resistance, the approximate estimation of genes involved, and the apparent freedom from serious linkage problems form a basis upon which to develop a breeding program designed to incorporate tolerance to root rot with horticulturally desirable characters in present day varieties of beans.

Download or read book Identification and Mapping of QTL Associated with Fusarium Root Rot Resistance and Root Architecture Traits in Black Beans Phaseolus Vulgaris L written by Timothy Nakedde and published by . This book was released on 2015 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transmission of Fusarium and Pythium Root Rot Resistance in Beans written by Patrick O. Ongom and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fusarium root rot, caused by the fungus Fusarium solani f. sp Phaseoli is an important soil-borne disease affecting common bean (Phaseolus vulgaris L.) production in Uganda and many other countries. This pathogen exists in complexe with with Pythium ultimum var. ultimum, and resistance to these pathogens were thought to be linked. A study was initiated to elucidate the inheritance of F.solani resistance and to determine if this resistance is associated with P.ultimum resistance gene. This book uniquely enumirates the surprising outcome the study. Mostly few additive genes with epistatic modofications were found. Fusarium and Pythium resistance genes lacked co-inheritance.The book also displays important genetic principles that guide breeding decisions, and is quite handy for those in academia as well as practical plant geneticsts and breeders.

Download or read book Investigating the Genetic Control of Fusarium Root Rot Resistance in Snap Beans written by Abigail R. Huster and published by . This book was released on 2016 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: Root rot diseases are a major constraint to bean (Phaseolus vulgaris L.) production around the world. Both snap beans and dry beans are affected. Root rot diseases can be caused by a variety of pathogens; however, Fusarium solani is a common causal agent. Fusarium root rot is a primary yield limitation of snap bean production in Oregon. Cultural control methods are ineffective and the pathogen will be present at the end of one season of production on previously clean land, indicating the need for genetic resistance. In order to address this need, a diversity panel of 148 snap bean varieties (the BeanCAP Snap Bean Diversity Panel) was evaluated for resistance to Fusarium root rot in Oregon. Morphological traits potentially involved in root rot resistance were also evaluated. Genome-wide association studies were conducted to locate SNPs associated with Fusarium root rot resistance, aboveground biomass, adventitious roots, taproot diameter, basal root diameter, deepest root angle, shallowest root angle, root angle average, root angle difference, and root angle geometric mean. Significant associations were located for all traits evaluated, including associations with root rot resistance on Pv02, Pv08, Pv09, and Pv10. Genomic estimated breeding values based on BLUPs and BLUEs were generated for each variety and trait. In order to investigate the genetic architecture of the diversity panel principal component analysis, a kinship heat map, and a neighbor-joining phylogenetic tree were generated. The first principal component axis separated varieties by center of domestication, while the second principal component axis separated European extra-fine beans from other Mesoamerican varieties. Kinship analysis demonstrated an average similarity coefficient between varieties of 0.67. The phylogenetic tree indicated two separate derivations of snap beans with extensive subsequent recombination. In this study we also converted previously published SNP markers associated with resistance to root rot diseases in snap bean into user-friendly INDEL and KASP markers to aid in the implementation of marker-assisted selection for resistance to root rot in snap bean.

Download or read book QTL Analysis and Candidate Genes Identification Associated with Fusarium Root Rot Resistance in Common Beans Phaseolus Vulgaris written by Weijia Wang and published by . This book was released on 2016 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Role of Root Growth Traits in Resistance to the Biotic Stress Fusarium Root Rot and the Abiotic Stress Low Soil Phosphorus in Common Bean Phaseolus Vulgaris L written by Karen Ann Cichy and published by . This book was released on 2006 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book QTL Analysis of Resistance to Fusarium Root Rot in Andean Bean Populations and the Influence of Root Architecture on Disease Development written by Belinda Román Avilés and published by . This book was released on 2004 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dry Root rot of the Bean written by Walter H.. Burkholden and published by . This book was released on 1919 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mapping QTL for Root Rot Resistance Root Traits and Morphological Trait in a Common Bean Recombinant Inbred Population written by Christina H. Hagerty and published by . This book was released on 2013 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Root rot diseases of bean (Phaseolus vulgaris L.) are a problem wherever they are grown, and are a major constraint to dry edible and snap bean production. Root rot is a primary yield limitation of snap bean production in the US, especially within the top three snap bean producing states of Wisconsin, Oregon and New York. Bean root rot pathogens will be present by the end of the first season even when starting with clean ground. The decline in yield can be relatively slow, so growers might not notice or appreciate the hidden yield cost associated with root rot disease. Traditional methods for disease control such as fungicides, crop rotations, cover crops, seedbed preparations have been proven ineffective (either physically ineffective or economically unviable) against root rot. Therefore, genetic resistance is needed. In order to address the need for genetic resistance to root rot in snap beans, the highly root rot resistant line RR6950, a small seeded black indeterminate type IIIA accession of unknown origin, was crossed with OSU5446, a highly root rot susceptible determinate type I blue lake four-sieve breeding line to produce the RR138 recombinant inbred mapping population. In this study we evaluated the RR138 RI population in the F6 generation for resistance to Fusarium solani root rot in Oregon and Aphanomyces euteiches root rot in Wisconsin. We also evaluated this population for morphological traits and root structural traits including pod height, pod width, pod length, pod wall thickness, strings, seed color, flower color, tap and basal root diameter, and root angle measurements. The RR138 population was also genotyped on the 10K BeanCAP Illumina Beadchip. The Single Nucleotide Polymorphism (SNP) data was used to assemble a high-density linkage map and Quantitative Trait Loci (QTL) for phenotypic data were evaluated. The linkage map produced from this study contained 1,689 SNPs across 1,196cM. The map was populated with 1 SNP for every 1.4cM, spanning across 11 linkage groups. Three QTL associated with A. euteiches root rot resistance were consistently expressed in 2011 and 2012 trials. A. euteiches QTL were found on Pv02, Pv04, and Pv06 and accounted for 7-17% of total genetic variation. Two QTL associated with F. solani were found in 2011 trial on Pv03 and Pv07, account for 9 and 22% of total genetic variation, respectively. We also found several QTL for morphological traits and root structural traits including QTL for pod fiber and pod height on Pv04, pod length on Pv01, strings on Pv01, taproot diameter on Pv05, and shallow basal root angle on Pv05, accounting for 21, 26, 12, 20, 11, and 19% of total genetic variation, respectively. QTL discovered from Oregon data for F. solani resistance did not cluster with QTL for A. euteiches root rot resistance. "SNP0928_7", was highly associated with F. solani resistance on Pv07 and "SNP0508_2", was highly associated with A. euteiches on Pv02. QTL and markers associated with QTL from this study will be of value to snap bean breeders developing root rot resistant lines with processing traits, and provide more information about targeting the mechanism of resistance.

Download or read book Etiology and Control of Dry Bean Root Rot in Minnesota written by Elva Consuelo Estévez de Jensen and published by INIAP Archivo Historico. This book was released on 2000 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Field based Resistance to Specific Root Rot and Wilt Pathogens in Common Bean Phaseolus Vulgaris L written by María Gabriela Ronquillo-López and published by . This book was released on 2009 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inheritance of Resistance to Fusarium Solani F Phaseoli and Thielaviopsis Basicola in Phaseolus Vulgaris L written by Ahmed Abdel-Moneim Hassan and published by . This book was released on 1970 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Improving Resistance to Fusarium Root Rot Fusarium Solani Mart Sacc F Sp Phaseoli Burkholder W C Snyder H N Hans in Common Bean Phaseolus Vulgaris L written by Clare Mukankusi Mugisha and published by . This book was released on 2008 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: