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Projects / Programmes source: ARIS

Biochemical markers of resistance to hop powdery mildew

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Research activity

Code Science Field Subfield
4.03.01  Biotechnical sciences  Plant production  Agricultural plants 

Code Science Field
B390  Biomedical sciences  Phytotechny, horticulture, crop protection, phytopathology 
B434  Biomedical sciences  Agrochemistry 
Keywords
hop, biochemical markers, essential oils, powdery mildew
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (5)
no. Code Name and surname Research area Role Period No. of publications
1.  05994  PhD Branka Javornik  Plant production  Researcher  1998 - 2001  1,292 
2.  15324  Vlasta Knapič  Plant production  Researcher  1999 - 2001  270 
3.  07494  PhD Dušica Majer  Plant production  Researcher  1998 - 2001  248 
4.  10922  PhD Andrej Simončič  Plant production  Researcher  1998 - 2001  932 
5.  08500  PhD Jelka Šuštar Vozlič  Plant production  Head  1998 - 2001  504 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0416  Slovenian Institute of Hop Research and Brewing  Žalec  5051762000  4,260 
Abstract
In Europe powdery mildew (Sphaerotheca humuli Schr.) was not dangerous until European-American hybrids were introduced. In 1970 and 1971 the disease caused great loss of yield in Great Britain, in 1997 in USA. Up to now there have not been significant problems with the disease in Slovenia, however, in the last few years the yield of cultivars from the world assortment as well as Slovene cultivars have been affected. Hop essential oils have been under research for some time now at the Institute of Hop Research and Brewing in Žalec and among their components markers for hop downy mildew and hop damson aphids have already been identified. Regarding existing knowledge and present results, markers of resistance to powdery mildew are expected to be found as well. More than 100 accessions from Slovene and world assortment will be included in the study. The cones of the accessions, with no fungicide against powdery mildew being applied, will be collected during three years and the analysis of essential oils will be done. The infection by powdery mildew will be observed by the strategy of grading. The results will be estimated by correlation method and by factor analysis. With RAPD method resistant and non resistant accessions will be tested and eventuel specific fragments will be searched for. By including markers we wish to modernize the breeding program in creating cultivars resistant to powdery mildew as well as to avoid the painstaking and longlasting strategy of resistance identification by means of grading.
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