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Breeding and molecular approaches for evolving drought-tolerant soybeans

Satpute, G.K., Ratnaparkhe, M.B., Chandra, S., Kamble, V.G., Kavishwar, R., Singh, A.K., Gupta, S., Devdas, R., Arya, M., Singh, M., Sharma, M.P., Kumawat, G., Shivakumar, M., Nataraj, V., Kuchlan, M.K., Rajesh, V., Srivastava, M.K., Chitikineni, A., Varshney, R.K.ORCID: 0000-0002-4562-9131 and Nguyen, H.T. (2021) Breeding and molecular approaches for evolving drought-tolerant soybeans. In: Giri, B. and Sharma, M.P., (eds.) Plant Stress Biology. Springer, Singapore, pp. 83-130.

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Soybean [Glycine max (L.) Merr] is an agronomically important oilseed crop in the world and an important source of protein and oil for both humans and animals. In addition, soybean is also becoming a major crop for bio-diesel production. Therefore, demand for soybean is increasing continuously worldwide. Soybean enriches the soil by fixing atmospheric nitrogen through symbiotic interaction with Rhizobia. With increasing challenges posed by climate change, it is predicted that incidents of drought will be more frequent and severe and it will further reduce crop yields. Abiotic stresses such as drought cause severe losses to soybean productivity worldwide by adversely affecting the plant growth, development, and yield. Introgression of genes controlling drought adaptive traits, yields related traits and root system architecture traits by breeding and molecular approaches will be very useful for enhancing drought stress tolerance in soybean, leading to cultivar development. Elucidation of function of genes and their integration in soybean genotypes by molecular breeding and genomic approaches and utilizing robust phenotyping tools to evaluate drought adaptive traits will be crucial for understanding response of soybean plants to drought stress. Recent advances in genomics lead identification, functional characterization, and introgression of genes associated with adaptation of soybean plants to drought stress. In order to perform genetic and genomic analysis, molecular markers have been employed on RIL or F2 populations. In addition, the genome typified with single nucleotide polymorphisms (SNPs) and its utilization in molecular breeding applications like QTL mapping, positional cloning, association mapping studies, genomic selection and genome editing is gaining impetus. Thus, the rapid development of soybean genomics and transcriptomics has provided tremendous opportunity for the genetic improvement of soybean for drought tolerance with yield stability.

Item Type: Book Chapter
Publisher: Springer, Singapore
Copyright: © 2020 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
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