Author: Lawrence William YargerPublisher:
ISBN:
Category : Carrots
Languages : en
Pages : 106
Book Description
A Study of Tolerance in Carrots (Daucus Carota L.) to Northern Root-knot Nematode (Meloidogyne Hapla Chitwood)
Author: Lawrence William YargerPublisher:
ISBN:
Category : Carrots
Languages : en
Pages : 106
Book Description
Ontogeny of Daucus Carota in Relation to Meloidogyne Hapla with a Preliminary Endomycorrhizal Study
Author: Lucille Ann SlingerPublisher:
ISBN:
Category : Carrots
Languages : en
Pages : 332
Book Description
Screening for Resistance to Meloidogyne Hapla Chitwood in Carrot (Daucus Carota L.)
Author: Min WangMasters Abstracts
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 500
Book Description
QTL for Meloidogyne Incognita Root Knot Nematode Resistance and Other Traits of Interest in Carrot (Daucus Carota)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Root-knot nematodes (RKN, Meloidogyne spp.) are major pests attacking carrots (Daucus carota) worldwide, causing galling and forking of the storage roots, rendering them unacceptable for market. Genetic resistance could significantly reduce the need for broad-spectrum soil fumigants in carrot production. In this study genetic resistance to M. incognita was mapped. Three diverse sources of resistance, from Syria (HM), Europe (SFF) and South America (Br1091) were identified. Two F2 mapping populations were developed using these parents, (Br1091xHM1) and (SFFxHM2), as well as a segregating population derived from the self-pollination of a HM plant (HM3). Analysis revealed four QTLs conditioning resistance in Br1091xHM1, three in SFFxHM2, and three in HM3. A consensus genetic map of the three populations revealed five non-overlapping QTLs for M. incognita resistance, one each on carrot chromosomes 1, 2, 4, 8, and 9. One QTL was present in all 3 populations, in the same region of chromosome 8 as Mj-1 which imparts resistance to M. javanica. Along with M. incognita RKN resistance, the Br1091xHM1 and SFFxHM2 populations were segregating for several other traits of interest. Carrot root and shoulder color have important implications for nutritional value and marketable yield. Segregation patterns for orange versus yellow exterior root color revealed one QTL in both populations, on chromosome 3, along with two additional QTL detected in the SFFxHM2 population. Segregation for purple shoulder color revealed one QTL also on chromosome 3 in both populations with two additional QTL identified in SFFxHM2. An additional QTL for green shoulder color in Br1091xHM1 co-localized with the purple shoulder color QTL. Annual flowering and vernalization are important traits that have implications for root quality since, as flowering progresses, the root quickly lignifies. Evaluating early flowering in the field, early flowering in the greenhouse, and annual growth habit allowed mapping additional QTL in the Br1091xHM1 population that behave in a manner similar to days to flowering QTL identified in other crops. These additional studies lay the foundation for future research to validate and refine the QTL.
Bio-management of Root Knot Nematode (Meloidogyne Incognita) Infecting Carrot (Daucus Carota)
Author: G. R. Guru PrasadStudy of the Biology and Ecology of Heterodera Carotae (Jones, 1950) in Michigan
Author: Michael F. BerneyPublisher:
ISBN:
Category : Carrots
Languages : en
Pages : 348
Book Description
Carrot Production in the United States
Author: Thomas Wallace WhitakerPublisher:
ISBN:
Category : Carrots
Languages : en
Pages : 44
Book Description
Studies on the Resistance of Vegetables to Root-knot Nematode Meloidogyne Javanica (Treub) Chitwood
Author: Randhir Singh DahiyaCharacterization of the Meloidogyne Javanica Resistance Locus Employing Molecular Markers and Isolation of Candidate Disease Resistance Loci in the Carrot (Daucus Carota L.) Genome
Author: Leonardo Silva BoiteuxPublisher:
ISBN:
Category :
Languages : en
Pages : 476
Book Description