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Thielaviopsis Stock Photos and Images

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Thielaviopsis Stock Photos and Images

Black root rot Thielaviopsis basicola pea plant with damaged root and stunted growth Stock Photo
RMAF6BP1–Black root rot Thielaviopsis basicola pea plant with damaged root and stunted growth
Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . ,small black eruptions which arethread-like in appearance appearover the canes. The Pineapple Disease(Thielaviopsis ethacetica, Went.).—This disease is of comparativelylittle importance, but it some-times attacks the cuttings whichhave been prepared for plantingand prevents their growth orcauses weak, unhealthy plants. Treatment.—The most satis-factory treatment for these threediseases is care in selection ofgood healthy plants for cuttingand the treatment of these cut-tings with B Stock Photo
RM2AWY8D3–Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . ,small black eruptions which arethread-like in appearance appearover the canes. The Pineapple Disease(Thielaviopsis ethacetica, Went.).—This disease is of comparativelylittle importance, but it some-times attacks the cuttings whichhave been prepared for plantingand prevents their growth orcauses weak, unhealthy plants. Treatment.—The most satis-factory treatment for these threediseases is care in selection ofgood healthy plants for cuttingand the treatment of these cut-tings with B
Foot rot complex Thielaviopsis basicola Fusarium etc on green Phaseolus bean seedlings Stock Photo
RMAF61WF–Foot rot complex Thielaviopsis basicola Fusarium etc on green Phaseolus bean seedlings
. The fungi which cause plant disease . Plant diseases; Fungi. 596 THE FUNGI WHICH CAUSE PLANT DISEASE Conidia clavate 4. Gongromeriza. Chains breaking up witii difficulty Chains curved 5. Gyroceras. Chains straight or nearly so 6. Honniscium. Hyphae hyaline 7. MonUochaetes, p. 597. Thielaviopsis Went. ^^ (p. 595) Hyphffi creeping, subhyaline; conidiophores simple, septate; conidia of two kinds; macroconidia catenulate, ovate, fuscous; Fio. 399.—T. ethaceticus. After Wakker and Went.. Fio. 400.—Torula. After Saccardo. microconidia cylindric, hyaline, catenulate within the conidiophore. In part Stock Photo
RMPG45J9–. The fungi which cause plant disease . Plant diseases; Fungi. 596 THE FUNGI WHICH CAUSE PLANT DISEASE Conidia clavate 4. Gongromeriza. Chains breaking up witii difficulty Chains curved 5. Gyroceras. Chains straight or nearly so 6. Honniscium. Hyphae hyaline 7. MonUochaetes, p. 597. Thielaviopsis Went. ^^ (p. 595) Hyphffi creeping, subhyaline; conidiophores simple, septate; conidia of two kinds; macroconidia catenulate, ovate, fuscous; Fio. 399.—T. ethaceticus. After Wakker and Went.. Fio. 400.—Torula. After Saccardo. microconidia cylindric, hyaline, catenulate within the conidiophore. In part
Blackhull (Thielaviopsis basicola) disease damage to peanut roots, South Africa Stock Photo
RMAPFCT8–Blackhull (Thielaviopsis basicola) disease damage to peanut roots, South Africa
. Tig. 123 Thielaviopsis in Sugar-cane Cutting Stock Photo
RMMCKCCD–. Tig. 123 Thielaviopsis in Sugar-cane Cutting
Blackhull (Thielaviopsis basicola) disease damage to peanut roots, South Africa Stock Photo
RMBWH0RK–Blackhull (Thielaviopsis basicola) disease damage to peanut roots, South Africa
Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 Tig. 123 Thielaviopsis in Sugar-cane Cutting Stock Photo
RMT1HXPN–Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 Tig. 123 Thielaviopsis in Sugar-cane Cutting
Black root rot (Thielaviopsis basicola) pea plant with damaged roots and stunted growth Stock Photo
RMBDNN20–Black root rot (Thielaviopsis basicola) pea plant with damaged roots and stunted growth
The Hawaiian forester and agriculturist . macrospore of Tliiclaziopsis is somewhat below these dimen-sions. At any rate, tlie spores are mgested by various com-mon species of flies belonging to the Muscidae, Sarcophagidaeand Syrphidae. All the species 1 have tried are such as nor-mally search out and prefer saccharine food. These take inthe Thielaviopsis spores with sugar solutions artificiallv pre-pared as described, and the spores pass through the insectswith little if any apparent alteration. From one to a dozenor more spores are to be found in each portion of excrement 134. Fig 6 Diseased Stock Photo
RM2AN598W–The Hawaiian forester and agriculturist . macrospore of Tliiclaziopsis is somewhat below these dimen-sions. At any rate, tlie spores are mgested by various com-mon species of flies belonging to the Muscidae, Sarcophagidaeand Syrphidae. All the species 1 have tried are such as nor-mally search out and prefer saccharine food. These take inthe Thielaviopsis spores with sugar solutions artificiallv pre-pared as described, and the spores pass through the insectswith little if any apparent alteration. From one to a dozenor more spores are to be found in each portion of excrement 134. Fig 6 Diseased
. Fig. 124 Thielaviopsis in Cells of Sugar-cane Stock Photo
RMMCKCCA–. Fig. 124 Thielaviopsis in Cells of Sugar-cane
Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 Tig. 123 Thielaviopsis in Sugar-cane Cutting Fig. 124 Thielaviopsis in Cells of Sugar-cane Stock Photo
RMT1HXPK–Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 Tig. 123 Thielaviopsis in Sugar-cane Cutting Fig. 124 Thielaviopsis in Cells of Sugar-cane
The Hawaiian forester and agriculturist . revent its accumulation. I refer to the fungusscientifically known as Thielaviopsis efJiaccficus, Went. Atpresent this is the commonest rot of the pineapple in Hawaii.Nearly every pineapple grower will at once recognise it whenI sav that it is the soft rot accompanied by a sooty blackcolor of the watery tissues in the last stages. The earlierstages are not accompanied by the black color: on the con-trarv, the fungus merely softens the tissues, discoloring them butlittle. 125 I have described this disease as it relates to cane in a bulle-tin published b Stock Photo
RM2AN5AT5–The Hawaiian forester and agriculturist . revent its accumulation. I refer to the fungusscientifically known as Thielaviopsis efJiaccficus, Went. Atpresent this is the commonest rot of the pineapple in Hawaii.Nearly every pineapple grower will at once recognise it whenI sav that it is the soft rot accompanied by a sooty blackcolor of the watery tissues in the last stages. The earlierstages are not accompanied by the black color: on the con-trarv, the fungus merely softens the tissues, discoloring them butlittle. 125 I have described this disease as it relates to cane in a bulle-tin published b
. Fig. U6 Thielaviopsis Soft Rot of Pineapple Bull. lo, Dept. Pathology, H.S.P.A. Stock Photo
RMMCKC8N–. Fig. U6 Thielaviopsis Soft Rot of Pineapple Bull. lo, Dept. Pathology, H.S.P.A.
Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 Fig. U6 Thielaviopsis Soft Rot of Pineapple Bull. lo, Dept. Pathology, H.S.P.A. Stock Photo
RMT1JJ64–Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 Fig. U6 Thielaviopsis Soft Rot of Pineapple Bull. lo, Dept. Pathology, H.S.P.A.
. Hawaiian Fungi. Fungi. Stevens—Hazvaiian Fungi 157 The fungus described above seems worthy of special mention on account of the fact that the conidia are produced internally. This character is rather rare among the Dematiaceae, and, to my knowledge, exists in only six genera listed in Saccardo's Sylloge Fungorum. The genera previously listed as bearing conidia internally are Conioscypha, Chalara, Thielaviopsis, Thielavia, Cirromyces, and Sporoschisma. These genera are scattered throughout the different divisions of the Dematiaceae. Lindau has brought several of them together under one sub-fa Stock Photo
RMRPY12E–. Hawaiian Fungi. Fungi. Stevens—Hazvaiian Fungi 157 The fungus described above seems worthy of special mention on account of the fact that the conidia are produced internally. This character is rather rare among the Dematiaceae, and, to my knowledge, exists in only six genera listed in Saccardo's Sylloge Fungorum. The genera previously listed as bearing conidia internally are Conioscypha, Chalara, Thielaviopsis, Thielavia, Cirromyces, and Sporoschisma. These genera are scattered throughout the different divisions of the Dematiaceae. Lindau has brought several of them together under one sub-fa
. Fig. 122 Thielaviopsis paradoxa, Sporophores of Micro- and Macro-conidia From Wakker & Went browning of the surface, which is accompanied by souring and reddening of the interior tissues. Numerous small pustules appear just beneath the rind. The pustules open and from each is extruded a black thread which under some conditions becomes long and curly, in others settles into an irregular heap ; it is made Stock Photo
RMMCKCCT–. Fig. 122 Thielaviopsis paradoxa, Sporophores of Micro- and Macro-conidia From Wakker & Went browning of the surface, which is accompanied by souring and reddening of the interior tissues. Numerous small pustules appear just beneath the rind. The pustules open and from each is extruded a black thread which under some conditions becomes long and curly, in others settles into an irregular heap ; it is made
Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 304 DISEASES OF CROP-PLANTS death. Johnston and Stevenson attribute some importance to the infestation of cuttings. Description. The first external sign of the occurrence of the fungus is a Fig. 122 Thielaviopsis paradoxa, Sporophores of Micro- and Macro-conidia From Wakker & Went browning of the surface, which is accompanied by souring and reddening of the interior tissues. Numerous small pustules appear just beneath the rind. The pustules open and from each is extruded a black Stock Photo
RMT1HXKR–Diseases of crop-plants in the Diseases of crop-plants in the Lesser Antilles diseasesofcroppl00nowe Year: 1923 304 DISEASES OF CROP-PLANTS death. Johnston and Stevenson attribute some importance to the infestation of cuttings. Description. The first external sign of the occurrence of the fungus is a Fig. 122 Thielaviopsis paradoxa, Sporophores of Micro- and Macro-conidia From Wakker & Went browning of the surface, which is accompanied by souring and reddening of the interior tissues. Numerous small pustules appear just beneath the rind. The pustules open and from each is extruded a black
. The fungi which cause plant disease . Plant diseases; Fungi. 596 THE FUNGI WHICH CAUSE PLANT DISEASE Conidia clavate 4. Gongromeriza. Chains breaking up witii difficulty Chains curved 5. Gyroceras. Chains straight or nearly so 6. Honniscium. Hyphae hyaline 7. MonUochaetes, p. 597. Thielaviopsis Went. ^^ (p. 595) Hyphffi creeping, subhyaline; conidiophores simple, septate; conidia of two kinds; macroconidia catenulate, ovate, fuscous; Fio. 399.—T. ethaceticus. After Wakker and Went.. Fio. 400.—Torula. After Saccardo. microconidia cylindric, hyaline, catenulate within the conidiophore. In part Stock Photo
RMRDE524–. The fungi which cause plant disease . Plant diseases; Fungi. 596 THE FUNGI WHICH CAUSE PLANT DISEASE Conidia clavate 4. Gongromeriza. Chains breaking up witii difficulty Chains curved 5. Gyroceras. Chains straight or nearly so 6. Honniscium. Hyphae hyaline 7. MonUochaetes, p. 597. Thielaviopsis Went. ^^ (p. 595) Hyphffi creeping, subhyaline; conidiophores simple, septate; conidia of two kinds; macroconidia catenulate, ovate, fuscous; Fio. 399.—T. ethaceticus. After Wakker and Went.. Fio. 400.—Torula. After Saccardo. microconidia cylindric, hyaline, catenulate within the conidiophore. In part
. Bulletin. Natural history; Natural history. was generally darker gray and com- posed of thick-walled, dark hyphae and chlamydospores as well as hyaline hyphae and endoconidia. Both of the Thielaviopsis isolates pro- duced more growth in the dark than in the light (Fig. 7). The TBB isolate averaged 5.9 mm of diameter growth per day in the dark and 5.2 mm per day in the light. As Fig. 5C shows, growth in the dark was consistently greater than growth in the light. Pro- duction of chlamydospores and dark- walled hyphae seemed to be favored by light. Fourteen-day-old colonies grown in the light c Stock Photo
RMRGWCY4–. Bulletin. Natural history; Natural history. was generally darker gray and com- posed of thick-walled, dark hyphae and chlamydospores as well as hyaline hyphae and endoconidia. Both of the Thielaviopsis isolates pro- duced more growth in the dark than in the light (Fig. 7). The TBB isolate averaged 5.9 mm of diameter growth per day in the dark and 5.2 mm per day in the light. As Fig. 5C shows, growth in the dark was consistently greater than growth in the light. Pro- duction of chlamydospores and dark- walled hyphae seemed to be favored by light. Fourteen-day-old colonies grown in the light c
. Bulletin. Natural history; Natural history. 440 Illinois Natural History Survey Bulletin Vol. 30, Art. 7 5CrC 2SK XK Fig. 5. — TKi /Effect of light upon the growth of; A, Cholarop- iis thielavioides; B, the TBT iso- late of Thielaviopsis bos/co/o; C, the TBB isolote of T. baskola, oil on V-8 iuice ogor.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Illinois. Natural History Survey Division. Urbana, State of Illinois, D Stock Photo
RMRGWCYJ–. Bulletin. Natural history; Natural history. 440 Illinois Natural History Survey Bulletin Vol. 30, Art. 7 5CrC 2SK XK Fig. 5. — TKi /Effect of light upon the growth of; A, Cholarop- iis thielavioides; B, the TBT iso- late of Thielaviopsis bos/co/o; C, the TBB isolote of T. baskola, oil on V-8 iuice ogor.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Illinois. Natural History Survey Division. Urbana, State of Illinois, D
. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz. Cryptogams -- Germany; Cryptogams -- Austria; Cryptogams -- Switzerland. 480 Zu vergleichen mit Thielaviopsis. In Deutsclilaiul bisher nicht gefunden, aber bei näherem Suchen sicherlich zu tindeu. Ableitung des Namens von eudon (innen) und Ivonis (Konidie). 2."; 12. E. temillentlim Prill. et Delacr. in Bull. Soc. Myc. Franco, VII, 116 (1891) Fig. I; VIII, 23 (1892). — Sacc. Syll. X, 708. Mycel hyalin, ausge- breitet. Fruchtlager zuerst weiß, dann sehr zart rosa, 0,5—1 mm lang, 0,5 mm breit. Konidienträge Stock Photo
RMREDKT5–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz. Cryptogams -- Germany; Cryptogams -- Austria; Cryptogams -- Switzerland. 480 Zu vergleichen mit Thielaviopsis. In Deutsclilaiul bisher nicht gefunden, aber bei näherem Suchen sicherlich zu tindeu. Ableitung des Namens von eudon (innen) und Ivonis (Konidie). 2."; 12. E. temillentlim Prill. et Delacr. in Bull. Soc. Myc. Franco, VII, 116 (1891) Fig. I; VIII, 23 (1892). — Sacc. Syll. X, 708. Mycel hyalin, ausge- breitet. Fruchtlager zuerst weiß, dann sehr zart rosa, 0,5—1 mm lang, 0,5 mm breit. Konidienträge
. Bulletin. Natural history; Natural history. Aug., 1971 Perby: Two Components of Poinsettia Root Rot 439 GROWTH ON PDA GROWTH ON V-e JUICE AGAR. jlW jg/^A<JZ<«^-<*Ai*-T!<'Ta't<^ Fig. 4 .U— The effE Tne effect of temper- pon the growth of: A, Chal- Ihielovioides; B, the TBI of Thielaviopsis bos/co/o; TBB isolate of T. faosico/o, V-8 juice agar. Effect of Light on Growth Rates As shown in Fig. 5A, Chalaropsis grew slightly more rapidly in the light than in the dark. Wliile the growth of the colony in the light averaged 8.6 mm in diameter per day for a 10-day period, the growth o Stock Photo
RMRGWD04–. Bulletin. Natural history; Natural history. Aug., 1971 Perby: Two Components of Poinsettia Root Rot 439 GROWTH ON PDA GROWTH ON V-e JUICE AGAR. jlW jg/^A<JZ<«^-<*Ai*-T!<'Ta't<^ Fig. 4 .U— The effE Tne effect of temper- pon the growth of: A, Chal- Ihielovioides; B, the TBI of Thielaviopsis bos/co/o; TBB isolate of T. faosico/o, V-8 juice agar. Effect of Light on Growth Rates As shown in Fig. 5A, Chalaropsis grew slightly more rapidly in the light than in the dark. Wliile the growth of the colony in the light averaged 8.6 mm in diameter per day for a 10-day period, the growth o
. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. Tig. 123 Thielaviopsis in Sugar-cane Cutting. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nowell, William, 1880-; West Indies (British). Imperial Dept. of Agriculture. London, West India Committee Stock Photo
RMRCD922–. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. Tig. 123 Thielaviopsis in Sugar-cane Cutting. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nowell, William, 1880-; West Indies (British). Imperial Dept. of Agriculture. London, West India Committee
. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. Tig. 123 Thielaviopsis in Sugar-cane Cutting. Fig. 124 Thielaviopsis in Cells of Sugar-cane. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nowell, William, 1880-; West Indies (British). Imperial Dept. of Agriculture. London, West India Committee Stock Photo
RMRCD920–. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. Tig. 123 Thielaviopsis in Sugar-cane Cutting. Fig. 124 Thielaviopsis in Cells of Sugar-cane. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nowell, William, 1880-; West Indies (British). Imperial Dept. of Agriculture. London, West India Committee
. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. Fig. U6 Thielaviopsis Soft Rot of Pineapple Bull. lo, Dept. Pathology, H.S.P.A.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nowell, William, 1880-; West Indies (British). Imperial Dept. of Agriculture. London, West India Committee Stock Photo
RMRCD8TY–. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. Fig. U6 Thielaviopsis Soft Rot of Pineapple Bull. lo, Dept. Pathology, H.S.P.A.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Nowell, William, 1880-; West Indies (British). Imperial Dept. of Agriculture. London, West India Committee
. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. 304 DISEASES OF CROP-PLANTS death. Johnston and Stevenson attribute some importance to the infestation of cuttings. Description. The first external sign of the occurrence of the fungus is a. Fig. 122 Thielaviopsis paradoxa, Sporophores of Micro- and Macro-conidia From Wakker & Went browning of the surface, which is accompanied by souring and reddening of the interior tissues. Numerous small pustules appear just beneath the rind. The pustules open and from each is extruded a black thread which under some cond Stock Photo
RMRCD92D–. Diseases of crop-plants in the Lesser Antilles. Tropical plants; Plant diseases. 304 DISEASES OF CROP-PLANTS death. Johnston and Stevenson attribute some importance to the infestation of cuttings. Description. The first external sign of the occurrence of the fungus is a. Fig. 122 Thielaviopsis paradoxa, Sporophores of Micro- and Macro-conidia From Wakker & Went browning of the surface, which is accompanied by souring and reddening of the interior tissues. Numerous small pustules appear just beneath the rind. The pustules open and from each is extruded a black thread which under some cond
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