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Marker assisted improvement of low soil phosphorus tolerance in the bacterial blight resistant, fine‑grain type rice variety, Improved Samba Mahsuri

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Title Marker assisted improvement of low soil phosphorus tolerance in the bacterial blight resistant, fine‑grain type rice variety, Improved Samba Mahsuri
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Creator Mahadeva Swamy HK*, Anila M*, Kale RR*, Rekha G, Bhadana VP, Anantha MS, Brajendra Balachiranjeevi CH, Hajira SK, Laxmi Prasanna B, Pranathi K, Dilip P, Kousik MBVN, Harika G, Surekha K, Mahender Kumar R, Cheralu C, Gouri Shankar V, Laha GS, Prasad MS, Subba Rao LV, Madhav MS, Balachandran SM and Sundaram RM
 
Subject low soil phosphorus tolerance
bacterial blight resistance
Improved Samba Mahsuri
 
Description Not Available
Improved-Samba-Mahsuri (ISM), a high-yielding, popular bacterial blight resistant (possessing Xa21, xa13, and xa5), fne-grain type, low glycemic index rice variety is highly sensitive to low soil phosphorus (P). We have deployed marker-assisted backcross breeding (MABB) approach for targeted transfer of Pup1, a major QTL associated with low soil P tolerance, using Swarna as a donor. A new co-dominant marker, K20-1-1, which is specifc for Pup1 was designed and used for foreground selection along with functional markers specifc for the bacterial blight resistance genes, Xa21, xa13, and xa5. A set of 66 polymorphic SSR marker were used for the background selection along with a pair of fanking markers for the recombination selection in backcross derived progenies and in BC2F2 generation, 12 plants, which are homozygous for Pup1, all the three bacterial blight resistance genes and possessing agro-morphological traits equivalent to or better than ISM were selected and selfed to produce BC2F3s. They were evaluated in plots with low soil P and normal soil P at ICARIIRR, Hyderabad for their low soil P tolerance, and bacterial blight resistance and superior lines were advanced to BC2F6. One of the lines, when tested at multiple locations in India was found promising under both normal as well as low soil P conditions.
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Date 2021-08-04T05:55:24Z
2021-08-04T05:55:24Z
2020-12-03
 
Type Research Paper
 
Identifier Swamy, H.K.M., Anila, M., Kale, R.R. et al. Marker assisted improvement of low soil phosphorus tolerance in the bacterial blight resistant, fine-grain type rice variety, Improved Samba Mahsuri. Sci Rep 10, 21143 (2020). https://doi.org/10.1038/s41598-020-78186-5
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http://krishi.icar.gov.in/jspui/handle/123456789/52818
 
Language English
 
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