Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives
In rapeseed and mustard, the major diseases (downy mildew, white rust, <i>Alternaria</i> blight and <i>Sclerotinia</i> stem rot) cause 37–47%loss in pod formation and 17–54% reduction in grain yield. The identification of new sources of resistance is a high priority in breedi...
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MDPI AG
2020-04-01
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| Online Access: | https://www.mdpi.com/2504-3900/36/1/195 |
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| author | Rashmi Yadav J. Nanjundan Ashish K. Gupta Mahesh Rao Jameel Akhtar J. C. Rana Ashok Kumar Kuldeep Singh |
| author_facet | Rashmi Yadav J. Nanjundan Ashish K. Gupta Mahesh Rao Jameel Akhtar J. C. Rana Ashok Kumar Kuldeep Singh |
| author_sort | Rashmi Yadav |
| collection | DOAJ |
| description | In rapeseed and mustard, the major diseases (downy mildew, white rust, <i>Alternaria</i> blight and <i>Sclerotinia</i> stem rot) cause 37–47%loss in pod formation and 17–54% reduction in grain yield. The identification of new sources of resistance is a high priority in breeding programs. About 3000 germplasm accessions of Indian mustard were evaluated under multiple environments (3 seasons) at hot spots (4 locations) and under artificial epiphytophic conditions against insect pests and diseases (aphids, white rust, powdery mildew and <i>Alternaria </i>blight). Accessions IC265495, IC313380, EC766091, EC766133, EC766134, EC766192, EC766230, EC766272 were identified as highly resistant to white rust (<i>A. candida) </i>with disease severity reaction (Percent disease severity Index,<b> </b>PDI = 0) under artificial inoculation. Accession RDV 29 showed the inheritance of resistant source for powdery mildew in Indian mustard. Screening of brassica wild relatives (about 25 species) for white rust found that <i>Brassica fruticulosa</i>,<i> Brassica tournefortii</i>,<i> Camelina sativa</i>,<i> Diplotaxis assurgens</i>,<i> D. catholica</i>, <i>D. cretacia, D. Erucoides</i>,<i> D. Muralis</i>,<i> Lepidium sativum </i>had highly resistance (PDI = 0) to Delhi isolates of white rust. Several traits identified from cultivated and related species will be useful for genetic improvement of rapeseed and mustard. |
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| spelling | doaj.art-299ced70c7a64b798c0d16d0f2d70bdf2024-11-02T20:19:22ZengMDPI AGProceedings2504-39002020-04-0136119510.3390/proceedings2019036195Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild RelativesRashmi Yadav0J. Nanjundan1Ashish K. Gupta2Mahesh Rao3Jameel Akhtar4J. C. Rana5Ashok Kumar6Kuldeep Singh7ICAR-National Bureau of Plant Genetic Resources, Pusa Campus-110 012, New Delhi, IndiaICAR-Indian Agricultural Research Institute, Regional Station, Wellington, The Nilgiris, Tamil Nadu-643231, IndiaICAR-National Research Center on Plant Biotechnology, Pusa Campus-110012, New Delhi, IndiaICAR-National Research Center on Plant Biotechnology, Pusa Campus-110012, New Delhi, IndiaICAR-National Bureau of Plant Genetic Resources, Pusa Campus-110 012, New Delhi, IndiaBioversity International-India, NASC Complex, Pusa Campus, New Delhi 110012, IndiaICAR-National Bureau of Plant Genetic Resources, Pusa Campus-110 012, New Delhi, IndiaICAR-National Bureau of Plant Genetic Resources, Pusa Campus-110 012, New Delhi, IndiaIn rapeseed and mustard, the major diseases (downy mildew, white rust, <i>Alternaria</i> blight and <i>Sclerotinia</i> stem rot) cause 37–47%loss in pod formation and 17–54% reduction in grain yield. The identification of new sources of resistance is a high priority in breeding programs. About 3000 germplasm accessions of Indian mustard were evaluated under multiple environments (3 seasons) at hot spots (4 locations) and under artificial epiphytophic conditions against insect pests and diseases (aphids, white rust, powdery mildew and <i>Alternaria </i>blight). Accessions IC265495, IC313380, EC766091, EC766133, EC766134, EC766192, EC766230, EC766272 were identified as highly resistant to white rust (<i>A. candida) </i>with disease severity reaction (Percent disease severity Index,<b> </b>PDI = 0) under artificial inoculation. Accession RDV 29 showed the inheritance of resistant source for powdery mildew in Indian mustard. Screening of brassica wild relatives (about 25 species) for white rust found that <i>Brassica fruticulosa</i>,<i> Brassica tournefortii</i>,<i> Camelina sativa</i>,<i> Diplotaxis assurgens</i>,<i> D. catholica</i>, <i>D. cretacia, D. Erucoides</i>,<i> D. Muralis</i>,<i> Lepidium sativum </i>had highly resistance (PDI = 0) to Delhi isolates of white rust. Several traits identified from cultivated and related species will be useful for genetic improvement of rapeseed and mustard.https://www.mdpi.com/2504-3900/36/1/195Indian mustard germplasmdisease resistancewhite rustpowdery mildew |
| spellingShingle | Rashmi Yadav J. Nanjundan Ashish K. Gupta Mahesh Rao Jameel Akhtar J. C. Rana Ashok Kumar Kuldeep Singh Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives Proceedings Indian mustard germplasm disease resistance white rust powdery mildew |
| title | Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives |
| title_full | Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives |
| title_fullStr | Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives |
| title_full_unstemmed | Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives |
| title_short | Novel Source of Biotic Stress Resistance Identified from Brassica Species and its Wild Relatives |
| title_sort | novel source of biotic stress resistance identified from brassica species and its wild relatives |
| topic | Indian mustard germplasm disease resistance white rust powdery mildew |
| url | https://www.mdpi.com/2504-3900/36/1/195 |
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