Investigation of Seed Germination and Seedling Characteristics of Safflower Variety Under Salt Stress Conditions
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2014, Vol 8, Issue 11
Abstract
In order to study the effect of salinity stress on germination and early seedling growth of six safflower genotypes namely FERAMAN, SINA, KM12, KM19, SIRIN and Kose by using five concentrations of NaCl (0, -0.3, -0.5, -1 and -1.5 MPa) a factorial experiment was designed using Completely Randomized Design (CRD) with three replications in. Results of ANOVA showed that salt stress adversely affected the germination percentage, germination rate; shoot length, root length, seedling length, root/shoot length ratio, seed vigour, and germination index and mean germination time of all 6 genotypes of safflower, which demonstrates high diversity among genotypes that enabled us to screen salinity tolerant cultivar. At the highest salt level (-1.5 MPa), Kose produced maximum germination percentage and germination rate of all genotypes and they were considered as relatively tolerant. Best level of NaCl concentration in root length, shoot length, seedling length and seed vigour was -0.3 MPa. Seed vigour increased with increase in osmotic potential until -0.3 MPa but decreased in -0.5 MPa. Results of cluster analysis (Ward’s minimum variance method) at the highest salt level (-1.5 MPa) classified all genotypes into three group. According to the obtained results, we found that Kose is the most resistant and FERAMAN, SINA and SIRIN are the most sensitive genotypes.
Authors and Affiliations
Hossein Sadeghi Give| Department of Agriculture, Birjand branch, Islamic Azad University, Birjand, Iran. email: hsadeghi@iaubir.ir, Morteza Firoozi| Department of Agriculture, Birjand branch, Islamic Azad University, Birjand, Iran., Negin Ahmadzadeh| Department of Agronomy and Plant Breeding, College of Agriculture, Karaj branch, Islamic Azad University, Alborz, Iran.
Keywords
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