Marker-assisted backcrossing to develop foliar disease-resistant genotypes in TMV 2 variety of peanut (Arachis hypogaea L.)

被引：23
|
作者：
Kolekar, Rohini M. [1 ]
Sukruth, Mallenahally [1 ]
Shirasawa, Kenta [2 ]
Nadaf, Hajisaheb L. [3 ]
Motagi, Babu N. [3 ]
Lingaraju, Sattigarahalli [4 ]
Patil, Prakashgouda V. [4 ]
Bhat, Ramesh S. [1 ]
机构：
[1] Univ Agr Sci, Dept Biotechnol, Dharwad, Karnataka, India
[2] Kazusa DNA Res Inst, Dept Frontier Res, Chiba, Japan
[3] Univ Agr Sci, Dept Genet & Plant Breeding, Dharwad, Karnataka, India
[4] Univ Agr Sci, Dept Plant Pathol, Dharwad, Karnataka, India
来源：
PLANT BREEDING | 2017年 / 136卷 / 06期
关键词：
foreground selection; marker-assisted backcrossing; peanut; productivity; rust and late leaf spot disease resistance; RUST RESISTANCE; QTL;
D O I：
10.1111/pbr.12549
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
TMV 2 is a very popular peanut variety among the Indian farmers, but it is highly susceptible to fungal foliar diseases like late leaf spot (LLS) and rust. Marker-assisted backcrossing (MABC) in TMV 2 using foliar disease-resistant donor, GPBD 4 and the disease resistance-linked markers (GM2009, GM2079, GM2301, GM1839 and IPAHM103) resulted in a large number of backcross populations and also straight cross populations. Foreground selection followed by field evaluation under disease epiphytotic conditions could identify a few superior genotypes. Two homozygous backcross lines TMG-29 and TMG-46 showed enhanced resistance to LLS and rust diseases (score of 3.00 for both) along with 71.0% and 62.7% increase in the pod yield per plot, respectively, over the check, TMV 2. These foliar disease-resistant and productive lines can be released as commercial varieties or can be used as genetic resources in the peanut improvement.
引用
收藏
页码：948 / 953
页数：6
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