| 1. |
- Ek, M., et al.
(författare)
-
Microsatellite markers for powdery mildew resistance in pea (Pisum sativum L.)
- 2005
-
Ingår i: Hereditas. - : Springer Science and Business Media LLC. - 1601-5223 .- 0018-0661. ; 142, s. 86-91
-
Tidskriftsartikel (refereegranskat)abstract
- Powdery mildew is a common disease of field pea, Pisum sativum L., and is caused by the ascomycete fungus Erysiphe pisi. It can cause severe damage in areas where pea is cultivated. Today breeders want to develop new pea lines that are resistant to the disease. To make the breeding process more efficient, it is desirable to find genetic markers for use in a marker-assisted selection (MAS) strategy. In this study, microsatellites (SSR) were used to find markers linked to powdery mildew resistance. The resistant pea cultivar '955180' and the susceptible pea cultivar 'Majoret' were crossed and F-2 plants were screened with SSR markers, using bulked segregant analysis. A total of 315 SSR markers were screened out of which five showed linkage to the powdery mildew resistance gene. No single marker was considered optimal for inclusion in a MAS program. Instead, two of the markers can be used in combination, which would result in only 1.6% incorrectly identified plants. Thus SSR markers can be successfully used in marker-assisted selection for powdery mildew resistance breeding in pea.
|
|
| 2. |
|
|
| 3. |
- Eklund, Jenny M., 1974-
(författare)
-
Adolescents at risk of persistent antisocial behaviour and alcohol problems : The role of behaviour, personality and biological factors
- 2005
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Antisocial behaviour and alcohol problems are areas of great concern to society, not only associated with personal and emotional costs for the affected individuals and their victims, but also with major societal financial costs. What makes some individuals more likely than others to develop these kinds of problems? The general aim of this thesis was to explore the role of individual characteristics in the development of antisocial behaviour and alcohol problems. More specifically, the research focused on aspects of hyperactive behaviour, personality traits and biological vulnerability indicators in relation to self-reported norm breaking and violent behaviour, registered general criminality and violent offending in particular, and further, on risky alcohol use and drinking offences. The studies were based on both a prospective longitudinal project in which a group of adolescent male lawbreakers and controls were followed from the 1960s into the 1990s, and on more recently collected data on a representative group of Swedish male and female adolescents.The results of the thesis supported that neuropsychological deficits, manifested in attention difficulties, and personality traits reflecting disinhibition and negative emotionality, influence the development of antisocial behaviour and risky alcohol use, which in turn increases the risk of subsequent alcohol problems. The findings indicated, furthermore, that these neuropsychological deficits may be associated with an underlying biological vulnerability to various forms of disinhibitory psychopathology. Although the thesis focuses on individual characteristics, the results also support the view that environmental risk factors such as the influence of family and peers and possible stress experiences, play an important role. It was emphasized that individual characteristics continuously interact with environmental conditions in shaping each individual’s developmental course. Results also revealed that adolescent females displaying violent behaviour and engaging in potentially harmful use of alcohol deviated more in personality traits than did the corresponding group of males. Further knowledge of the development of these problems in females is crucial, since most theories in this area have been developed primarily on male samples.
|
|
| 4. |
|
|
| 5. |
- Eklund, J. M., et al.
(författare)
-
Monoamine oxidase activity and tri-iodothyronine level in violent offenders with early behavioural problems
- 2005
-
Ingår i: Neuropsychobiology. - : S. Karger AG. - 0302-282X .- 1423-0224. ; 52:3, s. 122-29
-
Tidskriftsartikel (refereegranskat)abstract
- The focus is on evaluating the relationships between early behavioural problems and biochemical variables at adult age and their significance for early criminality and violent behaviour in a life perspective. In the present study, using prospective longitudinal data, a sample of males with a history of early criminal behaviour and male controls (n = 103) were investigated concerning (1) teacher-rated behaviours at age 11–14 years; (2) platelet monoamine oxidase (MAO) activity and tri-iodothyronine (T3) level at adult age; (3) registered early criminality (11–14 years); (4) records of violent offending up to age 35 years, and (5) interview data on smoking. The main finding was that a combined risk level pattern of low MAO activity and high T3level was found significantly more frequently than expected in violent offenders with an early behavioural risk pattern. Furthermore, there was a significant interaction effect between early attention difficulties and smoking on MAO activity, as well as an effect by smoking on MAO activity. The findings are discussed in terms of the possible influence of biological vulnerability to certain behaviours, which in combination with possible childhood stress, enhance the risk for antisocial behaviours and subsequent violence.
|
|
| 6. |
- Eklund, Jenny M., et al.
(författare)
-
Personality Characteristics as Risk Indications of Alcohol Use and Violent Behavior in Male and Female Adolescents
- 2005
-
Ingår i: Journal of Individual Differences. - : Hogrefe Publishing Group. - 1614-0001 .- 2151-2299. ; 26:2, s. 63-73
-
Tidskriftsartikel (refereegranskat)abstract
- The present study focused on personality characteristics in adolescent boys (n = 414) and girls (n = 552) in 8th grade with self-reported violent behavior and risky alcohol use. Adolescents with indications of violent behavior and/or risky alcohol use, compared to others, were generally more impulsive, had a stronger need for change and action, were less adjusted and socially conforming, as well as more aggressive. The findings pointed toward a clustering of problem behaviors. Furthermore, adolescents with a combination of violent behavior and alcohol use had more pronounced personality scores than subjects who reported only one of these behaviors. The main finding was that among girls these behaviors appeared to be associated with more deviant levels of the personality characteristics in focus.
|
|
| 7. |
|
|
| 8. |
|
|
| 9. |
- Eklund, Patrik, 1958-, et al.
(författare)
-
Computational coronary artery bypass grafting
- 2005
-
Ingår i: Sixth International Conference on Computational Intelligence and Multimedia Applications, 2005.. - : IEEE Computer Society. - 0769523587 ; , s. 138-144
-
Konferensbidrag (refereegranskat)abstract
- Multimedia in health care is a topic of growing interest. Guideline presentation, utility and adherence require intelligence and multimedia to interact in decision support environments. In this paper we aim at identifying guideline logic during statistical analysis. The case study is drawn from a regional perspective on analysis and production of data, information and knowledge.
|
|
| 10. |
|
|
