EFFECTS OF LIGHT AND SALINITY ON THE GERMINATION OF CLOSELY RELATED THREE SALSOLA TAXA

Authors : İnci Bahar ÇINAR, Gül Nilhan TUĞ

Pages : 157-169

Doi:10.53447/communc.1034430

View : 52 | Download : 12

Publication Date : 2021-12-31

Article Type : Research Paper

Abstract :Three closely related Salsola taxa insert ignore into journalissuearticles values(Salsola boissieri Botsch. subsp. serpentinicola insert ignore into journalissuearticles values(Freitag & Özhatay); Freitag & Uotila, Salsola boissieri Botsch. subsp. boissieri, Salsola turcica Yıldırımlı insert ignore into journalissuearticles values(halophytic ecotype);, Salsola turcica Yıldırımlı insert ignore into journalissuearticles values(gypsicole ecotype);); from different edaphic conditions were studied according to changing light and salinity conditions. Seeds of target taxa were collected in 2017 and their weights were determined. The perianth segments were removed before the experimental trials and all the trials were conducted at 9°C/22°C which is the mean night and day temperatures of germination season. For the determination of the influence of light, one set of seeds for distilled water trial were kept at complete darkness. Different NaCl concentrations insert ignore into journalissuearticles values(distilled water, 100, 200, 300 mM NaCl); were used to evaluate the effects of salinity on germination. Viability of the seeds were determined by Triphenyl Tetrazolium Chloride insert ignore into journalissuearticles values(TTC); test which was applied to the seeds that did not germinate during the trials. As a result, it was found out that light stimulates germination of the taxa and Salsola seeds showed better germination ratio at light. The most tolerant taxa against salinity are the halophytic and gypsicole ecotypes of S. turcica, and the most susceptible one is S. boissieri subsp. serpentinicola. Both of the species show reduced germination ratios with increasing salinity. Salinity tolerance of S. boissieri subsp. serpentinicola and S. boissieri subsp. boissieri are very low, according to the Decreasing Germination Percentage insert ignore into journalissuearticles values(DGP); values. Although they show different germination response against increasing salinity, there is not any statistically meaningful difference between these three taxa according to germination percentages at different salinities, germination rates, last germination ratios and seed viabilities insert ignore into journalissuearticles values(F=1.818 p>0.05); insert ignore into journalissuearticles values(One Way ANOVA, SPSS 25);.
Keywords : Amaranthaceae Chenopodiaceae, Halophyte, Germination, Gypsicole, Salinity, Salsola, Serpentine

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