Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai:
Gespeichert in:
1. Verfasser: | |
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Format: | Buch |
Sprache: | English |
Veröffentlicht: |
Laubach
APIA-Verl.
2001
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Schriftenreihe: | Agroecology
3 |
Schlagworte: | |
Online-Zugang: | Inhaltsverzeichnis |
Beschreibung: | Zugl.: Hohenheim, Univ., Diss., 2001 |
Beschreibung: | XII, 174 S. Ill., graph. Darst., Kt. : 21 cm |
ISBN: | 3934179029 |
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adam_text | Titel: Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium
Autor: Müller-Stöver, Dorette
Jahr: 2001
VII
Table of content
1 INTRODUCTION 1
1.1 Orobanche spp. as biotic constraints to crop
production 1
1.2 Biological control of weeds 2
1.3 Objectives of the study 6
2 MATERIALS AND METHODS 8
2.1 Investigations on the Orobanche problem in two
govemorates of Egypt 8
2.1.1 Field survey 8
2.1.2 Questionnaire 10
2.2 General aspects of laboratory and greenhouse
experiments 10
2.2.1 Media for culturing fungi 10
2.2.2 Maintenance of fungal cultures 12
2.2.3 Taxonomic identification 12
2.2.4 Seeds 13
2.2.5 General conditions for root chamber and pot experiments 14
2.3 Potential fungal antagonists of Orobanche crenata
from Egypt 15
2.3.1 Collection of diseased Orobanche crenata plants in Egypt 15
2.3.2 Isolation of fungi from infected Orobanche plants 16
2.3.3 Production of solid inoculum 16
2.3.4 Pathogenicity bioassay 16
2.4 The potential of Ulocladium botrytis to control
Orobanche spp. 17
2.4.1 Growth characteristics of Ulocladium botrytis 17
2.4.1.1 Growth and sporulation in solid and liquid media 17
2.4.1.2 Conidial germination of Ulocladium botrytis at different
temperatures and after air-drying 18
2.4.2 In vitro experiments 19
2.4.2A Effect of Ulocladium botrytis on the germination of 19
Orobanche crenata
VIII___________________________________________________________________
2.4.3 Root chamber experiments 19
2.4.3.1 Effect of Ulocladium botrytis on underground stages of
Orobanche crenata 19
2.4.4 Pot experiments 20
2.4.4.1 Effect of a conidia suspension of Ulocladium botrytis on
Orobanche crenata 21
2.4.4.2 Effect of type, amount and application mode of solid
inoculum of Ulocladium botrytis on Orobanche crenata 21
2.4.4.3 Synergistic effects of Ulocladium botrytis and sublethal
doses of glyphosate on Orobanche crenata 22
2.4.4.4 Effect of a post-emergence inoculation of Ulocladium
botrytis on Orobanche crenata 23
2.4.5 Preliminary host-range studies with Ulocladium botrytis 23
2.4.5.1 Pathogenicity of Ulocladium botrytis to Orobanche
cumana parasitizing sunflower and Orobanche aegyptiaca
parasitizing tomato 23
2.4.5.2 Pathogenicity of Ulocladium botrytis to various crop plants 24
2.5 The potential of Fusarium oxysporum f.sp. orthoceras
to control Orobanche spp. 25
2.5.1 The potential of Fusarium oxysporum f.sp. orthoceras to
control Orobanche crenata 25
2.5.1.1 Effect of Fusarium oxysporum f.sp. orthoceras on the
germination of Orobanche crenata 25
2.5.1.2 Effect of Fusarium oxysporum f.sp. orthoceras on
underground stages of Orobanche crenata in root
chambers 25
2.5.1.3 Effect of a pre-emergence application of solid wheat grain
inoculum of Fusarium oxysporum f.sp. orthoceras on
Orobanche crenata in pots 26
2.5.1.4 Synergistic effects of Fusarium oxysporum f.sp.
orthoceras and sub-lethal doses of glyphosate on
Orobanche crenata 26
2.5.2 Formation of chlamydospores by Fusarium oxysporum
f.sp. orthoceras 26
2.5.2.1 Effect of different substrates on chlamydospore formation 26
2.5.2.2 Kinetics of chlamydospore formation 27
2.5.2.3 Optimization of the growth medium for chlamydospore 27
formation
2.5.2.4 Effect of plant fibers on chlamydospore formation 28
IX
2.5.2.5 Virulence of air-dried chlamydospore-rich biomass in pot
experiments 28
2.5.3 Encapsulation of Fusarium oxysporum f. sp. orthoceras 29
2.5.3.1 Inoculum production 29
2.5.3.2 Preparation of alginate granules 30
2.5.3.3 Preparation of wheat flour-kaolin granules 31
2.5.3.4 Determination of the shelf-life of formulations 32
2.5.3.5 Conidial production on alginate granules over time 32
2.5.3.6 Influence of the inoculum concentration on the loss of
CFUs in wheat flour-kaolin granules during storage 33
2.5.3.7 Influence of the inoculum type on the loss of CFUs during
the wheat flour-kaolin formulation process and storage 33
2.5.3.8 Efficacy of the formulations in controlling Orobanche
cumana under controlled conditions 34
2.6 Statistical analysis 36
3 RESULTS 38
3.1 The Orobanche problem in two governorates of Egypt 38
3.1.1 Severity of the infestation of crops with Orobanche spp. in
Beni Suef and Ismailia 38
3.1.2 General aspects of crop production in both governorates 39
3.1.3 Faba bean and winter tomato cropping 42
3.1.4 Analysis of the Orobanche problem in Beni Suef and
Ismailia 45
3.2 Fungi associated with Orobanche crenata plants from
Egypt 53
3.3 The potential of Ulocladium botrytis to control
Orobanche spp. 54
3.3.1 Growth characteristics of Ulocladium botrytis 54
3.3.1.1 Sporulation of Ulocladium botrytis in solid and liquid
media 54
3.3.1.2 Conidial germination of Ulocladium botrytis at different
temperature and after air-drying 55
3.3.2 In wfro-experiments 56
3.3.2.1 Effect of Ulocladium botrytis on the germination of
Orobanche crenata 56
3.3.3 Root chamber experiments 57
3.3.3.1 Effect of Ulocladium botrytis on underground stages of
Orobanche crenata 57
3.3.4 Pot experiments 58
3.3.4.1 Effect of a conidia suspension of Ulocladium botrytis on
Orobanche crenata 59
3.3.4.2 Effect of type, amount, and application mode of solid
inoculum of Ulocladium botrytis on Orobanche crenata 60
3.3.4.3 Synergistic effects of Ulocladium botrytis and sublethal
doses of glyphosate on Orobanche crenata 66
3.3.4.4 Effect of a post-emergence application of Ulocladium
botrytis on Orobanche crenata 67
3.4 Preliminary host-range studies with Ulocladium
botrytis 68
3.4.1 Pathogenicity of Ulocladium botrytis to Orobanche
cumana parasitizing sunflower and Orobanche aegyptiaca
parasitizing tomato 68
3.4.2 Pathogenicity of Ulocladium botrytis to various crop plants 75
3.5 The potential of Fusarium oxysporum f.sp. orthoceras
to control Orobanche spp. 76
3.5.1 The potential of Fusarium oxysporum f.sp. orthoceras to
control Orobanche crenata 76
3.5.1.1 Effect of Fusarium oxysporum f.sp. orthoceras on the
germination of Orobanche crenata 76
3.5.1.2 Effect of Fusarium oxysporum f.sp. orthoceras on
underground stages of Orobanche crenata in root
chambers 77
3.5.1.3 Effect of a pre-emergence application of solid wheat grain
inoculum of Fusarium oxysporum f.sp. orthoceras on
Orobanche crenata in pots 77
3.5.1.4 Synergistic effects of Fusarium oxysporum f.sp.
orthoceras and sub-lethal doses of glyphosate on
Orobanche crenata 78
3.5.2 Formation of chlamydospores by Fusarium oxysporum
f.sp. orthoceras 78
3.5.2.1 Effect of different substrates on chlamydospore formation 78
3.5.2.2 Kinetics of chlamydospore formation 79
3.5.2.3 Optimization of the growth medium for chlamydospore
formation 80
3.5.2.4 Effect of plant fibers on chlamydospore formation 83
XI
3.5.2.5 Virulence of air-dried chlamydospore-rich biomass in pot
experiments 84
3.5.3 Encapsulation of Fusarium oxysporum f.sp. orthoceras 84
3.5.3.1 Influence of different nutritional additives and inocula on
the characteristics of alginate granules 85
3.5.3.2 Shelf-life of wheat flour-kaolin granules 87
3.5.3.3 Influence of the inoculum amount on the loss of CFUs in
wheat flour-kaolin granules during storage 88
3.5.3.4 Influence of the inoculum type on the loss of CFUs during
the wheat flour-kaolin formulation process and storage 89
3.5.3.5 Efficacy of different dosages of P1 and P2 granules in
controlling Orobanche cumana 91
3.5.3.6 Efficacy of wheat flour-kaolin and alginate granules in
comparison to wheat grain inoculum in controlling
Orobanche cumana 94
3.5.3.7 Effect of six months of storage on the efficacy of wheat
flour-kaolin granules 97
3.5.3.8 Effect of six months of storage on the efficacy of alginate
granules 99
3.5.3.9 Influence of the particle size of wheat flour-kaolin granules
on their efficacy 101
3.5.3.10 Influence of different types of inoculum and different
dosages on the efficacy of wheat flour-kaolin granules 103
4 DISCUSSION 107
4.1 The Orobanche problem in two governorates of Egypt 107
4.1.1 Severity of the infestation of crops with Orobanche spp. in
Beni Suef and Ismailia 107
4.1.2 Farmers control strategies against Orobanche 108
4.1.3 Conclusions and prospects for Orobanche control in Beni
Suef and Ismailia 114
4.2 Fungi associated with Orobanche crenata m Egypt 115
4.3 The potential of Ulocladium botrytis to control
Orobanche crenata 116
4.3.1 Growth characteristics of the fungus 116
4.3.2 Attack of different developmental stages of Orobanche
crenata by Ulocladium botrytis 118
4.3.3 Influence of inoculum type and application mode on
Orobanche crenata 120
4.3.4 Host-range of Ulocladium botrytis 124
4.3.5 Prospective for the use of Ulocladium botrytis to control
Orobanche crenata with special regard to the investigated
areas in Egypt 127
4.4 The potential of Fusarium oxysporum f.sp. orthoceras
to control Orobanche spp. 129
4.4.1 The potential of Fusarium oxysporum f.sp. orthoceras to
control Orobanche crenata 129
4.4.2 Formation of chlamydospores by Fusarium oxysporum
f.sp. orthoceras 129
4.4.3 Encapsulation of Fusarium oxysporum f.sp. orthoceras 132
4.4.3.1 Efficacy of alginate vs. wheat flour-kaolin granules in
greenhouse experiments 132
4.4.3.2 Influence of the dosage as well as the inoculum type and
concentration on the efficacy of wheat flour-kaolin
granules 134
4.4.3.3 Influence of the inoculum type on the loss of CFUs during
the wheat flour-kaolin formulation process 135
4.4.3.4 Stability of the formulations at room temperature 136
4.4.4 Prospective for Fusarium oxysporum f.sp. orthoceras as a
mycoherbicide against Orobanche cumana 138
5 REFERENCES 142
6 SUMMARY 160
7 ZUSAMMENFASSUNG 164
Annexes
Annex I: Scientific names of plants 168
Annex II: Questionnaire 171
|
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spelling | Müller-Stöver, Dorette Verfasser aut Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai Dorette Müller-Stöver Laubach APIA-Verl. 2001 XII, 174 S. Ill., graph. Darst., Kt. : 21 cm txt rdacontent n rdamedia nc rdacarrier Agroecology 3 Zugl.: Hohenheim, Univ., Diss., 2001 Sommerwurz (DE-588)4287334-4 gnd rswk-swf Ulocladium botrytis (DE-588)4658072-4 gnd rswk-swf Biologische Schädlingsbekämpfung (DE-588)4006862-6 gnd rswk-swf Fusarium oxysporum orthoceras (DE-588)4527367-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Sommerwurz (DE-588)4287334-4 s Biologische Schädlingsbekämpfung (DE-588)4006862-6 s Ulocladium botrytis (DE-588)4658072-4 s Fusarium oxysporum orthoceras (DE-588)4527367-4 s DE-604 Agroecology 3 (DE-604)BV012671100 3 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009613069&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
spellingShingle | Müller-Stöver, Dorette Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai Agroecology Sommerwurz (DE-588)4287334-4 gnd Ulocladium botrytis (DE-588)4658072-4 gnd Biologische Schädlingsbekämpfung (DE-588)4006862-6 gnd Fusarium oxysporum orthoceras (DE-588)4527367-4 gnd |
subject_GND | (DE-588)4287334-4 (DE-588)4658072-4 (DE-588)4006862-6 (DE-588)4527367-4 (DE-588)4113937-9 |
title | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai |
title_auth | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai |
title_exact_search | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai |
title_full | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai Dorette Müller-Stöver |
title_fullStr | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai Dorette Müller-Stöver |
title_full_unstemmed | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai Dorette Müller-Stöver |
title_short | Possibilities of biological control of Orobanche crenata Forsk. and O. cumana Wallr. with Ulocladium botrytis Preuss and Fusarium oxysporum Schlecht. f. sp. orthoceras (Appel & Wollenw.) Bilai |
title_sort | possibilities of biological control of orobanche crenata forsk and o cumana wallr with ulocladium botrytis preuss and fusarium oxysporum schlecht f sp orthoceras appel wollenw bilai |
topic | Sommerwurz (DE-588)4287334-4 gnd Ulocladium botrytis (DE-588)4658072-4 gnd Biologische Schädlingsbekämpfung (DE-588)4006862-6 gnd Fusarium oxysporum orthoceras (DE-588)4527367-4 gnd |
topic_facet | Sommerwurz Ulocladium botrytis Biologische Schädlingsbekämpfung Fusarium oxysporum orthoceras Hochschulschrift |
url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009613069&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
volume_link | (DE-604)BV012671100 |
work_keys_str_mv | AT mullerstoverdorette possibilitiesofbiologicalcontroloforobanchecrenataforskandocumanawallrwithulocladiumbotrytispreussandfusariumoxysporumschlechtfsporthocerasappelwollenwbilai |