Fatty acid desaturase-2 ( ahFAD2 ) mutant alleles in peanut ( Arachis hypogaea L.) pre-breeding lines: an insight into t
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RESEARCH ARTICLE
Fatty acid desaturase-2 (ahFAD2) mutant alleles in peanut (Arachis hypogaea L.) pre-breeding lines: an insight into the source, features, discourse, and selection of novel pre-breeding lines J. H. Kamdar . M. D. Jasani . B. C. Ajay . Kirti Rani . N. Manivannan . R. P. Vasanthi . K. L. Dobariya . M. K. Pandey . P. Janila . T. Radhakrishnan . R. K. Varshney . S. K. Bera Received: 4 December 2019 / Accepted: 13 August 2020 Ó Springer Nature B.V. 2020
Abstract High oleic peanuts and derived food products offer longer shelf life benefits to the food processing industry in addition to multiple health benefits to the consumers. The two mutant alleles, ahFAD2A and ahFAD2B control composition of oleic, linoleic and palmitic acid content in peanut. A total of 563 peanut pre-breeding lines were tested for the presence ahFAD2A and ahFAD2B mutant alleles using allele specific markers. The ahFAD2A mutant allele was present in 82 lines, while none of these lines had ahFAD2B mutant allele. Among botanical types, ahFAD2A mutant allele was more frequent in lines with Virginia growth habit than Spanish bunch although no correlation of ahFAD2A mutant allele with high oleic acid content and growth habit could be established. Oleic and linoleic acid content in 82 prebreeding lines ranged from 39.70 to 62.70% and 17.76 J. H. Kamdar M. D. Jasani B. C. Ajay K. Rani T. Radhakrishnan S. K. Bera (&) ICAR-Directorate of Groundnut Research, Post Box No. 05, Ivnagar Road, Junagadh, Gujarat 362001, India e-mail: [email protected]
to 31.95%, respectively, with maximum oleic to linoleic acid ratio of 4. Oleic acid was found to be negatively correlated with linoleic and palmitic acid. Further, pre-breeding lines with ahFAD2A mutant allele, high oleic content and high oleic to linoleic ratio were investigated and novel lines were identified for resistance to late leaf spot, short duration, higher pod yield and other yield related traits. These novel pre-breeding lines can be used as a potential donor in peanut improvement programme and to diversify the primary gene pool including initiating further research on induction of fresh ahFAD2B mutant allele. Keywords Peanut Oleic acid Linoleic acid Palmitic acid Oil quality Shelf life Pre-breeding lines K. L. Dobariya Main Oilseeds Research Station, Junagadh Agricultural University, Junagadh, Gujarat, India M. K. Pandey P. Janila R. K. Varshney International Crops Research Institute for the Semi-Arid Tropics, Hyderabad, India
N. Manivannan Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India R. P. Vasanthi Regional Agricultural Research Station, Achariya NG Ranga Agricultural University, Tirupati, Andhra Pradesh, India
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Genet Resour Crop Evol
Introduction Peanut (Arachis hypogaea L.) plays a pivotal role as both an oilseed and food crop worldwide. It offers livelihood to millions, especially in the semi-arid tropic (SAT) regions of the world. About 47.09 million tonnes of peanut are produced
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