We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
QUANTITATIVE TRAIT LOCI (QTLS) MAPPING FOR SALT STRESS TOLERANCE IN WHEAT AT GERMINATION STAGE.
- Authors
Batool, Nazima; Ilyas, Noshin; Shahzad, Armghan; Hauser, Bernard A.; Arshad, Muhammad
- Abstract
Identification of genetic factors responsible for controlling germination traits under salinity will allow developing tolerant cultivars. Here we have studied quantitative trait loci (QTL) linked to seed germination and early seedling growth traits using recombinant inbred lines generated from crossing of wheat cultivars, Pasban 90 (salt tolerant) and Frontana (salt susceptible). QTL analysis were done using composite interval mapping (CIM) for germination percentage (G%), germination index (GI), seedling vigor index (SVI), shoot length (SL), root length (RL), fresh wight (FW) & dry weight (DW). In this QTLs analysis total 44 QTLs were identified, 26 QTLs out of 44 were identified in 150 mM salt stressed and eighteen QTLs under control environment. Eleven main quantitative trait loci (QTLs) were localized on 1B, 2B, 3B, 5B, 6B and 7B chromosome of mapping population in stressed environment. QTLs mapped on 6A, 3B, 6B and 6D chromosome for root and shoot length, fresh and dry weight were recognized as a major QTLs under control treatment. QTLs for root and shoot length were mapped on 2D same position in xgdm36-xwmc111. Root length and dry weight QTLs was flanked in interval of xgwm70-xgwm325 markers on 5B chromosomes. The result of this study revealed that QTLs play main role in salt tolerance at seed germination and early seedling growth stage.
- Subjects
LOCUS in plant genetics; WHEAT genetics; GERMINATION; SALINITY; PLANT shoots
- Publication
Pakistan Journal of Agricultural Sciences, 2018, Vol 55, Issue 1, p47
- ISSN
0552-9034
- Publication type
Article
- DOI
10.21162/PAKJAS/18.5426