Working group session:
Germplasm and Genetic Stocks
Presentation type:
5 minute Oral and Poster
Author Affliation:
Department of Plant breeding and genetics, University of Agriculture, Faisalabad
Department of Plant breeding and genetics, University of Agriculture, Faisalabad
Department of Plant breeding and genetics, University of Agriculture, Faisalabad
Department of Agronomy, University of Agriculture, Faisalabad
Abstract:
Fifty cotton cultivars were evaluated for NaCl tolerance in the Department of Plant Breeding and Genetics in the University of Agriculture, Faisalabad. Plants were irrigated with a nutrient solution with an electrical conductivity (EC) of 10dSm-1 and 15dSm-1 with the addition of NaCl from 10-day seedlings to 40-day seedlings. The data for chlorophyll content, root length, shoot length, fresh root weight, fresh shoot weight, shoot dry weight, root dry weight, Na+, K+ and K+/Na+ were taken from the seedlings at the time of harvesting. Analysis of variance indicated that there were significant differences among the genotypes at control and both salt stress levels. Salinity negatively impacted the growth of all cotton cultivars, however, the magnitude of reduction varied among all cultivars. High heritability and the high genetic advance was noticed for the root length, fresh root weight, dry root weight, dry shoot weight and potassium to sodium ratio which indicated the presence of additive gene actions in the expression of these characters. NIAB-824, Mubarak, CIM-612, FH-114, and Kehkshan were conceived as salt tolerant genotypes. The existence of genetic variability in the cotton germplasm exhibited that it can be exploited for the genetic improvement in future breeding programs.