Naik, S J S and Padmaja, G and Tiwari, A and Bandi, S and Parihar, A K and Bohra, A and Mishra, R K and Gangashetty, P I and Pandey, M K and Sharma, S (2024) Genomics-Aided Breeding Strategies for Biotic Stress in Pigeonpea. In: Genomics-aided Breeding Strategies for Biotic Stress in Grain Legumes. Springer, Singapore, pp. 49-84. ISBN 978-981-97-3916-5
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In agriculture, biotic stress is caused as a result of the harmful effects exerted pathogens, insects, and weeds on crop plants. Pigeonpea [Cajanus cajan (L.) Millisp.], a legume crop grown in both tropical and subtropical regions, is known for its high protein content and bioavailable nutritional value, but it is also susceptible to various biotic stresses such as diseases, insect-pests, and weeds during its different growth stages. Genomics-aided breeding (GAB) is the use of genomic tools and technologies to improve the genetic diversity and quality of crops. It can help identify the genes or markers associated with biotic stress resistance or tolerance in the pigeonpea genome. Biotic stress resistance or tolerance in pigeonpea can be achieved by conventional breeding methods using quantitative trait locus (QTL) mapping, marker-assisted selection (MAS), or transgenic approaches. However, these methods have some limitations such as low genetic gain and long generation time. Therefore, there is a need to explore the potential of GAB to enhance biotic stress resistance or tolerance in pigeonpea using advanced genomic tools and technologies such as whole-genome sequencing (WGS), genome editing (GE), genomic selection (GS), and rapid generation advancement (RGA). These tools can provide rapid and precise information on the genetic variation and molecular mechanisms of biotic stress response in pigeonpea. Moreover, these tools can facilitate the integration of multiple sources of resistance genes from different species or genera into pigeonpea using MAS or GE techniques. Furthermore, these tools enable the prediction of phenotypic performance under different biotic stress conditions using genomic selection methods. Additionally, these tools can accelerate the development of new varieties with high biotic stress resistance or tolerance using speed breeding (SB) methods. In this chapter, we have summarized the recent advances in engineering biotic stress resistance or tolerance in pigeonpea.
| Item Type: | Book Section |
|---|---|
| Divisions: | Global Research Program - Accelerated Crop Improvement |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Transcriptomic, Genomics, Proteomic, pigeonpea, Biotic stress, breeding |
| Subjects: | Others > Biotic Stress Others > Plant Breeding Mandate crops > Pigeonpea Others > Genetics and Genomics |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 13 Aug 2025 07:58 |
| Last Modified: | 13 Aug 2025 07:58 |
| URI: | http://oar.icrisat.org/id/eprint/13270 |
| Acknowledgement: | UNSPECIFIED |
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