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Introgression of “ QTL‐hotspot ” region enhances drought tolerance and grain yield in three elite chickpea cultivars

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Relation http://oar.icrisat.org/11794/
https://doi.org/10.1002/tpg2.20076
doi:10.1002/tpg2.20076
 
Title Introgression of “ QTL‐hotspot ” region enhances drought tolerance and grain yield in three elite chickpea cultivars
 
Creator Bharadwaj, C
Tripathi, S
Soren, K R
Thudi, M
Singh, R K
Sheoran, S
Roorkiwal, M
Patil, B S
Chitikineni, A
Palakurthi, R
Vemula, A K
Rathore, A
Kumar, Y
Chaturvedi, S K
Mondal, B
Shanmugavadivel, P S
Srivastava, A K
Dixit, G P
Singh, N P
Varshney, R K
 
Subject Crop Yield
Chickpea
 
Description With an aim of enhancing drought tolerance using a marker-assisted backcrossing
(MABC) approach, we introgressed the “QTL-hotspot” region from ICC 4958 accession
that harbors quantitative trait loci (QTLs) for several drought-tolerance related
traits into three elite Indian chickpea (Cicer arietinum L.) cultivars: Pusa 372, Pusa
362, and DCP 92-3. Of eight simple sequence repeat (SSR) markers in the QTLhotspot
region, two to three polymorphic markers were used for foreground selection
with respective cross-combinations. A total of 47, 53, and 46 SSRs were used for
background selection in case of introgression lines (ILs) developed in genetic backgrounds
of Pusa 372, Pusa 362, and DCP 92-3, respectively. In total, 61 ILs (20
BC3F3 in Pusa 372; 20 BC2F3 in Pusa 362, and 21 BC3F3 in DCP 92-3), with >90%
recurrent parent genome recovery were developed. Six improved lines in different
genetic backgrounds (e.g. BGM 10216 in Pusa 372; BG 3097 and BG 4005 in Pusa
362; IPC(L4-14), IPC(L4-16), and IPC(L19-1) in DCP 92-3) showed better performance
than their respective recurrent parents. BGM 10216, with 16% yield gain over
Pusa 372, has been released as Pusa Chickpea 10216 by the Central Sub-Committees
on Crop Standards, Notification and Release of Varieties of Agricultural Crops,Ministry
of Agriculture and Farmers Welfare, Government of India, for commercial cultivation
in India. In summary, this study reports introgression of the QTL-hotspot for enhancing yield under rainfed conditions, development of several introgression lines,
and release of Pusa Chickpea 10216 developed through molecular breeding in India.
 
Publisher Wiley
 
Date 2021-01
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11794/1/tpg2.20076.pdf
Bharadwaj, C and Tripathi, S and Soren, K R and Thudi, M and Singh, R K and Sheoran, S and Roorkiwal, M and Patil, B S and Chitikineni, A and Palakurthi, R and Vemula, A K and Rathore, A and Kumar, Y and Chaturvedi, S K and Mondal, B and Shanmugavadivel, P S and Srivastava, A K and Dixit, G P and Singh, N P and Varshney, R K (2021) Introgression of “ QTL‐hotspot ” region enhances drought tolerance and grain yield in three elite chickpea cultivars. The Plant Genome (TSI), 14 (1). pp. 1-14. ISSN 1940-3372