Foliar disease resistant and productive mutants from the introgression lines of peanut (Arachis hypogaea)

被引：2
作者：
Joshi, Pushpesh [1 ]
Jadhav, Mangesh P. [1 ]
Shirasawa, Kenta [2 ]
Yadawad, Arati [1 ]
Bhat, Ramesh S. [1 ]
机构：
[1] Univ Agr Sci, Dept Biotechnol, Dharwad, Karnataka, India
[2] Kazusa DNA Res Inst, Dept Frontier Res & Dev, Chiba, Japan
来源：
PLANT BREEDING | 2020年 / 139卷 / 01期
关键词：
copy number variations; foliar disease resistance and productivity; introgression lines; mutagenesis; peanut; single nucleotide polymorphisms; GAMMA-RAYS; EFFICIENCY; MUTATIONS;
D O I：
10.1111/pbr.12762
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
With an objective of developing the induced mutants for superior productivity and resistance to foliar diseases in peanut, two introgression lines (IL-3 and IL-4) derived from ABK genomes of peanut were subjected to gamma and sodium azide mutagenesis. Evaluation of M-1, M-2 and M-3 generations could identify foliar disease resistant and productive mutants. Large-scale evaluation of M-4 mutants during the rainy season of 2017 confirmed the superiority of 12 mutants over the respective parents and the best check (GPBD 4). The selected mutants were resistant to leaf spots (early and late) and rust diseases, and significantly more productive than the parents and GPBD 4. ddRAD-Sequencing of these mutants identified the single nucleotide polymorphisms (SNPs) when compared to their parents. The genes harbouring these structural mutations were also identified. However, no copy number variations (CNVs) were observed between the mutants and the parents. The selected mutants carried resistant-type alleles at the marker loci linked to foliar disease resistance. These promising mutants (M-8) are currently under initial trials of variety development for commercial release.
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收藏
页码：148 / 155
页数：8
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