Assessing drought tolerance genotypes of Indian mustard [Brassica juncea (l.) Czern and Coss] using the drought susceptibility index
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Authors
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Omesh Kumar
Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Author
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Kartikeya Srivastava
Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Author
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Sheo Pratap Singh
Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221 005, Uttar Pradesh, India
Author
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Girish Tantuway
Department of Genetics and Plant Breeding, Rajiv Gandhi South Campus, Banaras Hindu University, Barkachha, Mirzapur-231 001, Uttar Pradesh, India
Author
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Aditi Eliza Tirkey
Department of Genetics and Plant Breeding, Rabindra Nath Tagore Agriculture College, Birsa Agricultural University, Mohanpur 814 157, Deoghar, Jharkhand, India
Author
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Ashish Sheera
Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, India
Author
Keywords:
Brassica juncea, drought, drought susceptibility index, genotypes, tolerance, yieldAbstract
Fluctuations in climate, such as drought, significantly impact the yield of rainfed crops like mustard. This research aimed
to examine the influence and selection of drought-tolerant parent plants and hybrids concerning the yield and its
components in Indian mustard. Based on both average performance and Drought Susceptibility Index (DSI) values,
parental genotypes Giriraj, RH-749, and RGN-73 demonstrated high yield under irrigated conditions but showed lower
tolerance to drought. Conversely, the remaining parental genotypes exhibited moderate to high levels of drought
tolerance. DRMR150-35 was identified as having high drought tolerance for seed yield, while RGN-229, RGN-298, Pusa
Bold, NRCHB-101, Vardan, PM-27, and PM-28 displayed moderate tolerance. Crosses involving high-yielding, susceptible
genotypes as female parents and drought-tolerant genotypes as male parents, such as Giriraj × DRMR 150-35, RH-749 ×
RH-406, RH-749 × DRMR150-35, and RGN-73 × DRMR150-35, demonstrated varying degrees of drought tolerance for
almost all the traits examined. The donors identified in this study, possessing multiple characteristics for drought
tolerance, should be prioritized in future breeding programs.
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