Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew
Samples of powdery mildew of summer squash (Cucurbita pepo L.) collected from Solan, Shimla, Hamirpur and Kinnaur districts of Himachal Pradesh during 2017-18 revealed the presence of anamorphs, whereas the cool and dry temperate region of district Kinnaur showed the occurrence of both teleomorphic...
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Indian Council of Agricultural Research
2021-09-01
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| Series: | The Indian Journal of Agricultural Sciences |
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| Online Access: | https://epubs.icar.org.in/index.php/IJAgS/article/view/115119 |
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| author | POOJA BHARMERA S K GUPTA DURGA PARSAD MONICA SHARMA |
| author_facet | POOJA BHARMERA S K GUPTA DURGA PARSAD MONICA SHARMA |
| author_sort | POOJA BHARMERA |
| collection | DOAJ |
| description |
Samples of powdery mildew of summer squash (Cucurbita pepo L.) collected from Solan, Shimla, Hamirpur and Kinnaur districts of Himachal Pradesh during 2017-18 revealed the presence of anamorphs, whereas the cool and dry temperate region of district Kinnaur showed the occurrence of both teleomorphic and anamorphic stages of powdery mildew on summer squash. Present studies constitute the first report of cleistothecial occurrence on summer squash under Indian conditions. Based on anamorphic characters like ellipsoidal conidia, presence of fibrosin bodies and germinating conidia produced both simple and forked germ tubes without appressorium and teleomorphic characters like cleistothecia with myceloid appendages, single ascus with eight ascospores the associated pathogen was identified as Sphaerotheca fuliginea (Schlecht.) Pollaci. Maximum conidial germination was observed at 25° temperature and 100% relative humidity. The development of powdery mildew disease was significantly favored at moderate temperature coupled with high relative humidity and cumulative rainfall.
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| first_indexed | 2024-04-10T15:28:17Z |
| format | Article |
| id | doaj.art-9fc8644010224c958c75853c22a12e43 |
| institution | Directory Open Access Journal |
| issn | 0019-5022 2394-3319 |
| language | English |
| last_indexed | 2024-04-10T15:28:17Z |
| publishDate | 2021-09-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | The Indian Journal of Agricultural Sciences |
| spelling | doaj.art-9fc8644010224c958c75853c22a12e432023-02-14T08:08:54ZengIndian Council of Agricultural ResearchThe Indian Journal of Agricultural Sciences0019-50222394-33192021-09-0191710.56093/ijas.v91i7.115119Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildewPOOJA BHARMERA0S K GUPTA1DURGA PARSAD2MONICA SHARMA3Dr Y S Parmar University of Horticulture and Forestry, Neri, Hamirpur, Himachal Pradesh 177 001, IndiaM S Swaminathan School of Agriculture, Shoolini University of Biotechnology and Management Sciences, SolanRHR&TS Sharbo, Dr YSP University of Horticulture and Forestry, Kinnaur, HPCollege of Horticulture & Forestry, Dr YS Parmar University of Horticulture and Forestry, Hamirpur, HP Samples of powdery mildew of summer squash (Cucurbita pepo L.) collected from Solan, Shimla, Hamirpur and Kinnaur districts of Himachal Pradesh during 2017-18 revealed the presence of anamorphs, whereas the cool and dry temperate region of district Kinnaur showed the occurrence of both teleomorphic and anamorphic stages of powdery mildew on summer squash. Present studies constitute the first report of cleistothecial occurrence on summer squash under Indian conditions. Based on anamorphic characters like ellipsoidal conidia, presence of fibrosin bodies and germinating conidia produced both simple and forked germ tubes without appressorium and teleomorphic characters like cleistothecia with myceloid appendages, single ascus with eight ascospores the associated pathogen was identified as Sphaerotheca fuliginea (Schlecht.) Pollaci. Maximum conidial germination was observed at 25° temperature and 100% relative humidity. The development of powdery mildew disease was significantly favored at moderate temperature coupled with high relative humidity and cumulative rainfall. https://epubs.icar.org.in/index.php/IJAgS/article/view/115119AnamorphsEpidemiologyCucurbita pepoSphaerotheca fuligineaTeleomorphs |
| spellingShingle | POOJA BHARMERA S K GUPTA DURGA PARSAD MONICA SHARMA Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew The Indian Journal of Agricultural Sciences Anamorphs Epidemiology Cucurbita pepo Sphaerotheca fuliginea Teleomorphs |
| title | Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew |
| title_full | Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew |
| title_fullStr | Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew |
| title_full_unstemmed | Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew |
| title_short | Morphological characterization and epidemiological studies of summer squash (Cucurbita pepo) powdery mildew |
| title_sort | morphological characterization and epidemiological studies of summer squash cucurbita pepo powdery mildew |
| topic | Anamorphs Epidemiology Cucurbita pepo Sphaerotheca fuliginea Teleomorphs |
| url | https://epubs.icar.org.in/index.php/IJAgS/article/view/115119 |
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