Kiranmayee, B and Sudini, H K and Bera, S K and Shivani, D and Chary, S and Veerendrakumar, H V and Vemula, A K and Janila, P (2024) Resistance to stem rot disease in groundnut (Arachis hypogaea L.) in inter-specific derivatives of wild Arachis species. Genetic Resources and Crop Evolution (TSI). pp. 1-18. ISSN 0925-9864
![[img]](http://oar.icrisat.org/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Restricted to Repository staff only Available under License ["licenses_description_cc_attribution" not defined]. Download (920kB) | Request a copy |
Abstract
Stem rot of groundnut, caused by a necrotrophic pathogen Sclerotium rolfsii Sacc., is an important soil-borne disease that can cause a pod yield loss of 20–80% depending on severity. Stem rot disease reaction of 160 groundnut genotypes was assessed by employing sick field screening at the International Crop Research Institute for the Semi-Arid Tropics (ICRISAT, Patancheru, India) and Indian Council of Agricultural Research - Directorate of Groundnut Research (ICAR-DGR) (under natural and high humidity conditions), pot screening under controlled conditions at ICRISAT and through oxalic acid assay. In the sick field at ICRISAT, percent mortality (PM) of the genotypes ranged from 13 to 80%, clearly discriminating the genotypes, while it was 8–58% at ICAR-DGR under natural conditions. The disease pressure was high in pot screening and under high humidity conditions at ICAR-DGR. Owing to a discrimination ability among the genotypes, ICRISAT sick field results were considered in selecting the resistant genotypes. Out of 160 genotypes, ten were found to be resistant (13–19% PM) and fourty were moderately resistant (20–29.43% PM) at ICRISAT sick field. Fourty four of these lines, (9 resistant and 35 moderately resistant) were developed from the wild Arachis species A. villosa, A. correntina, A. helodes, A diogoi, A. cardenasii, A. stenosperma, A. paraguariensis, A. kempff-mercadoi, A. hoehnei. The other 6 lines are not interspecific-derivatives to our best knowledge; one resistant and four moderately resistant lines are breeding lines derived from cultivated species at ICRISAT (4) and USA (1), and one moderately resistant is a land race from Nigeria. Interestingly, the stem rot resistant interspecific derivatives identified in the study, except A. paraguariensis (EE), originate from the AA genome of the wild Arachis species. The potential genotypes for stem rot disease resistance are three interspecific derivative lines, ICGR 161939, ICGR 162044, ICGR 162032, and two advanced breeding lines, ICGV 10342 and ICGV 181045. Oxalic acid assay further confirmed the resistance of the three inter-specific derivatives, ICGR 161939, ICGR 162044 and ICGR 162032 with a low wilting score (1–2) and less lesion length (1–3 cm).The study suggests the use of comprehensive screening protocols employing both lab and sick field screening for assessing the components of host resistance to stem rot disease and find their use in breeding programs to develop stem rot resistant cultivars.
| Item Type: | Article |
|---|---|
| Divisions: | Research Program : Asia |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Soil-borne, Disease, Stem rot, Resistance, Inter-specific derivatives |
| Subjects: | Others > Soil Mandate crops > Groundnut Others > Plant Disease |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 20 Jan 2025 08:39 |
| Last Modified: | 20 Jan 2025 10:20 |
| URI: | http://oar.icrisat.org/id/eprint/12917 |
| Official URL: | https://link.springer.com/article/10.1007/s10722-0... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | The authors are thankful to Dr Mangala Uppala (ICRISAT), Dr Dnyaneshwar Deshmukh (Bayer Crop Sciences), Mr Surendra S Manohar (ICRISAT) and Dr Sai Rekha Kadirimangalam (Dr. YSR Horticultural University), for their assistance in conducting the experiment. |
| Links: |
Actions (login required)
 |
View Item |
Altmetric
Altmetric