Article_Beans Diseases

8/7/2019 Article_Beans Diseases

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S No Particulars Picture Remarks

1 Bean Seedling showingprimary Leaves-Vegetative phase.

2 Flower and developingpod of beanreproductive phase.

3 Young bean plantshowing trifoliolatevegetative

4 Pod filling reproductivephase


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5 Phase and stages ofdevelopment of thebean plant

6 Oogonia, antheridia andoospores ofAphanomyces euteichesf. phaseoli

7 Chlamydospores ofThielaviopsis basicola

8 Macroconidia offusarium solani f. sp.

phaseoli

9 Chlamydospores offusarium solani f. sp.Phaseoli


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10 Sporangium (left) andoogonium containingoospore (right) ofpythium paroecandrumin bean root

11 Bean flower infectedwith Botrytis cinerea

12 Life stage ofMeloidogyne sp.A. Second stagejuvenileB. Anterior portion ofsecond stage juvenile.C. Tail of second stagejuvenile.D. Mature female.E. Developing juvenilefrom plant root.F. Mature male


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13 Life stage ofpartylenchus sp.A. Mature femaleB. Anterior portion offemale illustrating theoverlapping

Esophagus.C&D. Lateral view ofmale tailE. Mature female

14 Snap bean grown in soilcontainingAphanomyces euteichesf. sp. Phaseoli(center right ) Check onleft

15 Snap Bean from a fieldinfested with Pythiumultimum andAphanomyces euteichesf. sp phaseoli showingmoderate (left) and mild(right) root rot

16 Snap beans grown 16o Cin soil that was (left toright ) uninfested,infested with pythium

ultimum alone, infestedwith Aphanomyceseuteiches f. sp. Phaseolialone, or infested withboth pathogens


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17 Snap grown at 28 0 C insoil that was (left toright) unifested withpythium alone infestedwith Aphanomyceseuteiches f. sp. Phaseoli

alone or infested withboth pathogens

18 Snap beans infectedwith Aphanomyceseuteichase f. sp.Phaseoli (right ) Checkis in center

19 Black root caused byThielaviopsis basicola (

four plant on right ).Healthy plant on left

20 Fusarium root rot,caused by Fusariumsolani f. Sp. Phaseoli.Note: Proliferation ofadventitious roots onplant on right followingsevere rotting of thelower root


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21 Improved root growthby subsoilng at a depthof 50 cm. Between rowsin soil infested withfusarium solani f. sp.Phaseoli (right)

compared to lack ofsubsoiling (left).

22 Cultures of fusariumsolani f. sp. Phaseoli(left and middle) and f.solani (right) on potato-dextrose agar.

23 Seed decay (left) androot rot (right) causedby pythium paroecan-drum


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24 Postenergencedamping-off, caused bypythium paroecandrum

25 Lesions on hypocotyl,caused by pythium sp.

26 Rotting of feeder roots,caused by pythium

paroecandrum.


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27 Blight of bean seedling,caused by pythium sp.

28 Stunting of bean plantsby pythium. Healthyplant on left

29 Sunken, Raddish browncankers on bean

hypocotyls, caused byrhizoctonia solani

30 Raddish brown rottingof pith of bean stem,caused by rhizoctoniasolani


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31 Lower stem and rootlesions of southernblight and sclerotiaproduced by sclerotiumrolfsii

32 Lesions on lower stemcaused by sclerotiumrolfsii (left ) and by asterile basidiomycete(right).

33 Alternaria leaf spot,caused by alternariaalternata

34 Seed discoloration,

caused by alternariaalternata (left). Healthyseed on right.

35 Angular leaf spot,caused byphaeoisariopsis griseola.


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36 Alternaria pod spot,caused by alternariaalternata (left). Healthypod on right

37 Pod and branches withsymptoms of angularleaf spot, caused byphaeoisariopsis griseola.

38 Anthracnose caused byglomerella

lindemuthiana(anamorphcolletotrichumlindemuthianum), onleaf.


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39 Anthracnose, caused byglomerellalindemuthiana(anamorphcolletotrichumlindemuthianum), on

pods.

40 Anthracnose, caused byglomerellalindemuthiana(anamorphcolletotrichumlindemuthianum), onseed (right). Healthyseed on left

41 Ascochyta leaf causedby phoma exigua var.exigua

42 Ascochyta leaf spot,caused by phoma

exigua var. exigua,showing zonate leafspot.


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43 Ascochyta leaf spotcaused by Phomaexigua var. exiguashowing zonate lesionon pod

44 Ascochyta leaf spot,caused by Phomaexigua var. exiguashowing discoloration ofseed


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45 Ashy stem blight onstem of seeding causedby Macrophominaphaseolina

46 Ashy stem blight onstem, caused bymacrophominaphaseolina


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47 Ashy stem blight onstem, caused bymacrophominaPhaseolina.

48 Ashy stem blight onpods caused byMacrophominaphaseolina

49 Infection on seeds byMacrophomina

phaseolina

50 Ashy stem blight inbean crop, caused byMacrophominaphaseolina


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51 Cercospora leaf spotand blotch, caused byCercospora canescens

52 Cercospora leaf spotand blotch, caused byCercospora canescens

53 Chaetoseptoria leafspot, caused byChaetoseptoria wellmanii


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58 Fusarium yellows,caused by fusariumoxysporum f. sp.Phaseoli

59 Reddish browndiscoloration of vasculartissue of plant affectedby fusarium yellows,caused by fusariumoxysporum f. sp.phaseoli

60 Gray leaf spot, causedby Cercospora spp


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61 Gray leaf spot, causedby Cercospora spp.

62 Gray mold on leaf,caused by Botryotiniafuckeliana (anamorphBotryotinia cinerea).

63 Gray mold on pod,caused by Botryotiniafuckeliana (anamorphBortrytish cinerea).

64 Conidia and hypha ofBtrytis cinerea.


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65 Sclerotia, apothecium,and conidia ofBotryotinia fuckeliana(anamorph Botrytiscinerea).

66 Pink pod rot, caused byTrichothecium roseum.

67 Pink pod rot, caused byTrichothecium roseum.

68 Leaf affected bypowdery mildew, caused

by Erysiphe polygoni.


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69 Plant affected powderymildew, caused byErysiphe polygoni

70 Pods affected bypowdery mildew, causedby Erysiphe polygoni

71 Pythium blight causedby Pythium ultimum


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72 Pythium blight causedby pythium ultimum

73 Rust caused byUromycesappendiculatus on upperleaf surface.

74 Rust caused byUromycesappendiculatus on pod.

75 Rust urediniumproduced by Uromycesappendiculatussurrounded bysecondary uredinia


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76 Pycnia (left) aecia(center) and uredinia(right) of rust, causedby Uromycesappendiculatus onleaflets collected from a

naturally infectedvolunteer bean seedlingbeneath the canopy of awinter wheat field

77 Red Kidney beanresistant (left) and navybean susceptible (right)to prevalent race of rustcaused by Uromycesappendiculatus

78 Large Hypersensitivenecrotic spots on beancultivar Oregon StateUniversity 1604, causedby infection with race39 of Uromycesappendiculatus

79 Highly susceptiblereaction of bean cultivarGolden Gate Wax torace 39 of Uromycesappendiculatus. Thelargest dots on the beanrust grading scale cardappromiximate 800 um


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80 Soybean rust on leaf,caused by Phakopsorapachyrhizi

81 Uredinia of the soybeanrust fungus Phakopsorapachyrhizi

82 Sporulation of soybeanrust fungus, Phakopsorapachyrhiz, on lowersurface of leaf

83 Sterile whitebasidomycete, cause ofstem rot


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84 Web blight on leavescaused byThanatephoruscucumeris (anamorphRhizoctonia solani).

85 Coalesced lesions ofweb blight on leafcaused byThanatephoruscucumberis (anamorphRhizoctonia solani).

86 Mycelium and sclerotiaof Thanatephoruscucumeris (anamorphRhizoctonia solani)causeof web blight, on stem

87 Web blight on pods,caused byThanatephoruscucumeris (anamorphRhizoctonia solani).


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88 White leaf spot causedby pseudocercosporellaalbida.

89 White leaf spot, causedby Pseudocercosporellaalbida

90 White mold on pods andbranches, caused bysclerotinia sclerotiorum

91 White mold on pods,caused by Sclerotiniasclerotioum


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92 Sclerotia of SclerotiniaSclerotiorum on pods

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93 Sclerotinia sclerotiorumon potato-dextrose agar

94 Sclerotium andapothecia of Sclerotiniasclerotiorum

95 Seed infected withSclerotinia sclerotiorum


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96 Water-soaked lesion ofcommon bacterialblight, caused byXanthomonascampestris pv. Phaseoli.

97 Common bacterial blighton lower leaf surface,caused byXanphomonascampestris pv. Phaseoli

98 Common bacterial blighton upper leaf surface,caused by Xanthomonascampestris pv. Phaseoli

99 Common bacterial blighton pods, caused byXanthomonascampestris pv. Phaseoli

100 Halo blight on leaf,caused by Pseudomonassyringae pv.Phaseolicola.


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101 Extensive yellowing ofplant affected with haloblight, caused byPseudomonas syringaepv. Phaseolicola

102 Halo blight on pods,caused by pseudomonassyrimgae pv.Phaseolicola

103 Lesions and bacterialcrust of halo blight onpod, caused bypseudomonas syringaepv. Phaseolicola


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104 Halo blight on seed,caused by pseudomonassyringare pv.Phaseolicola

105 Bean debris affectedwith halo blight, causedby pseudomonassyringae pv.Phaseolicola

106 Bacterial brown spot onleaf, caused bypseudomonas syringaepv. Syringae


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107 Bacterial brown spot onleaves, caused bypseudomonas syringaepv. Syringae

108 Bactrial brown spot onpods, caused bypseudomonas syringaepv. Syringae

109 White pustules on leaffollowing water-soakinoculation withCurtobacteriumflaccumfacitns, cause ofbacterial wilt

110 Vitinal chlorosis andnecrosis on leavesfollowing steminoculation with

Curtobacteriumflaccumfaciens, cause ofbacterial wilt

111 Seeds infected withorange (upper right),violet (upper left), andyellow (lower left)variants ofcurtobacteriumflaccumfaciens, cause ofbacterial wilt


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112 Purple Discoloration ofstem from seed infectedwith Curtobacteriumflaccumfaciens

113 Yellow (left) and orange(right) Variants ofCurtobacteriumflaccumfaciens

114 Galls on bean roots

caused by the root-knotnematode Meloidogynesp


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115 Galls on bean roots andhypocotyl, caused bythe root-knotnematode, Meloidogynesp

116 Galls on hypocotyl andadventitious roots,caused by the root-knotnematode, Meloidgynesp


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117 Mature Meloidogynefemale attached to rootwith a full egg sac

118 Discoloration andreduction of root andhypocotyl tissues (right)by the lesion nematodePratylenchus penetrans

119 Systemic yellowspotting of leaf caused

by alfalfa mosaic virus.


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120 Typical green on greenvein banding symptomsof bean common mosaicon trifoliolate leaf

121 Mosaic and leafdistortion caused bybean common mosiacvirus

122 Leaf roll caused by beancommon mosaic virus


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123 Stunting of plantmalformation mosaicmottle, veinclearing,and blistering of leaves,caused by beancommon mosaic virus

124 Atypical yellow dots andmosaic caused by beancommon mosaic vrius

125 Local and systemicvascular necrosiscaused by bean

common mosaic virus


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126 Pinpoint necrotic locallesions caused by beancommon mosaic virus

127 Pinpoint necrotic locallesions extended toveinal necrosis andinterveinal chlorosis,caused by beancommon mosaic virus


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128 Necrotic Blackrootsymptoms, causedby bean commonmosaic virus

129 Necrosis of pod wall andpod suture caused by

bean common mosaicvirus

130 Mild green-on-greenmosaic mottle causedby bean commonmosaic virus


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131 Foliar symptoms ofbean dwart mosaic

132 Foliar sysptoms of beangolden mosaic

133 Bright golden mosaiccaused by bean golden

mosaic virus


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134 Leaf distortion andblighted flower, causedby bean golden mosaicvirus

135 Ovipositing commonwhitefly (Bemisiatabaci) on lower leafsurface

136 Leaves on pods infectedwith bean pod mottlevirus

137 Plant infected with beanrugose mosaic virus

138 Mosaic and rugosity onleaf, caused by beanyellow mosaic virus


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139 Mosaic on leaf causedby bean yellow mosaicvirus

140 Chlorosis, caused bychlorotic strain of beanyellow mosaic virus

141 Yellow mosaic, causedby clover yellowveinvirus

142 Prominent epinasty(left) followinginculation withcucumber mosaic virus.Healthy plants on right


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143 Mosaic symptoms,caused by cucumbermosaic virus

144 Veinbanding, leafletelongation, andzipperlike rugosity alongthe main vein, causedby cucumber mosaicvirus

145 Epinastic leaf curl andgeneral chlorosis onplant in foreground,caused by beet curly topvirus

146 Bean cultivarssusceptible (foreground)and resistant (background ) to beet curlytop virus

147 Tight epinastic curl oftrifoliolate leaves,distorted stem tip, anddeath of secondarybuds, caused by beetcurly top virus


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148 Epinastic curl of leaflets,petioles andinflorescence of tumblemustard (Sisymbriumaltissimum), caused bybeet curly top virus

149 Necrotic lesions andvein necrosis on primaryleaf caused by peanutmottle virus

150 Chlorosis and necrosis

of veins and petioles oftrifoliolate leaf, causedby peanut mottle virus

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