National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
An in-vitro experiment was conducted using Polyethylene glycol-6000 (PEG-6000) at MARS, UAS, Raichur, to identify genotypes which overcome moisture stress condition at germination and seedling establishment stage of Sunflower based on stress tolerance index. A total of 160 sunflower genotypes in two replications were screened in petri-dishes at six water stress levels (0, 10, 15, 20, 25 and 30% of PEG-6000) induced by PEG-6000 in two factorial CRD fashion. The germination percentage, shoot length, root length and seedling length were recorded on seven days after of sowing, later these observations are converted into the germination stress tolerance index (GTI), root length stress tolerance index (RLTI), plant height stress tolerance index (PHTI) and seedling length stress tolerance index (SLTI). The results of analysis of variance showed that, all treatments, genotypes and G X T interactions were significant for all the studied traits. The treatment means indicated that GTI, RLTI, PHTI and SLTI are drastically reduced with the increased percentage of PEG. The genotype x treatment interactions at 20 and 25% PEG few genotypes exhibited significant differences for studied traits, hence, these concentrations are considered as critical doses to isolate the real moisture tolerant genotypes. Based on per se mean performance for GTI, RLTI, PHTI and SLTI, there are 34 promising genotypes were identified as a moisture stress tolerant genotypes.
Citations |
 |
 |
 |
 |
