In:
Plant Breeding, Wiley, Vol. 137, No. 4 ( 2018-08), p. 514-526
Abstract:
Drought stress is presently a major productivity limiting factor in wheat. This study developed five wheat lines with inbuilt tolerance to drought stress using marker‐assisted backcross breeding ( MABB ) approach employing three linked quantitative trait loci ( QTL s) in an initial population of 516 BC 1 F 1 plants. The high‐yielding wheat cultivar ‘ HD 2733’ grown over last few years extensively in the eastern plains of India is largely sensitive to drought and is used as the recurrent parent. ‘ HI 1500’ released for water‐limiting conditions and carrying drought‐tolerant QTL s was used as donor parent. MABB lines were advanced using foreground and background selection, coupled with stringent phenotyping. We identified 29 lines that were homozygous for targeted QTL s in different combinations with background recovery range of 89.2%–95.4%. Further evaluation of selected lines for physiological traits and distinctness, uniformity and stability ( DUS ) characters under rainfed condition identified five potential varieties for national varietal evaluation programme in the zone. The report is first of its kind in implementing known QTL s for the development of drought‐tolerant wheat lines through MABB approach.
Type of Medium:
Online Resource
ISSN:
0179-9541
,
1439-0523
DOI:
10.1111/pbr.2018.137.issue-4
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
2020488-7
SSG:
12