Abstrakt

Investigations on resistance tall fescue (Festuca arundinacea Scherb.) accesstions to drought stress

Hasan Salehi, Mohamadreza Salehi

Turf breeders are searching worldwide to develop plant species and turfgrass cultivars that can grow and perform satisfactory growth in a wide range of climates, soils, and environmental conditions. This study was conducted in a greenhouse, to compare growth responses of 45 Iranian tall fescue accession and foreign cultivar in terms of physiological changes under drought stresses to find tolerate accession. After two months growing, plant were irrigated to 25% FC condition for three time then fresh leaves were collected again for measuring SOD, CAT andAPX activities, proline and total chlorophyll content. Differences among treatment means were assessed by the least significance difference (LSD) at P = 0.05 probability level. The results showed that there are very different between accession as drought stress tolerant and foreign cultivar, Khoramabad, Salmas accessions were tolerate and Sari, Neka, Lahijan and Chalos accessions were sensitive.