| Yazarlar |
Prof. Dr. Mehmet Cengiz BALOĞLU
Kastamonu Üniversitesi, Türkiye |
Musa Kavas
Ondokuz Mayıs Üniversitesi, Türkiye |
|
Gülsüm Aydın
Selçuk Üniversitesi, Türkiye |
|
Hüseyin Avni Öktem
Konya Gıda ve Tarım Üniversitesi, Türkiye |
|
Ayşe Meral Yücel
Orta Doğu Teknik Üniversitesi, Türkiye |
| Özet |
| Drought stress is one of the most important yield-reducing factors in crop production. Sunflower, an oilseed crop, is severely affected by abiotic stress. In this study, 2 sunflower cultivars (Musala and Aydi{dotless}n) were evaluated in terms of various biochemical and physiological responses under 2 different polyethylene glycol-mediated drought stress conditions. Stress-determining parameters such as malondialdehyde (MDA), hydrogen peroxide (H2O2), and proline contents were determined. Both cultivars showed similar responses at osmotic potentials of both -0.4 and -0.8 MPa. Aydi{dotless}n was less affected than Musala under these stress conditions. MDA, H2O2, and proline levels were similar at both -0.4 and -0.8 MPa osmotic potentials in the 2 different cultivars. The 2 cultivars differed significantly in ascorbate peroxidase and catalase enzyme activities, which were more prominent in Aydi{dotless}n for both stress levels. However, glutathione reductase activity did not appear to be an essential part of the antioxidative system in either of the cultivars. Engineering antioxidative enzyme levels might provide a potential mechanism to cope with drought stress in sunflower. © TÜBİTAK. |
| Anahtar Kelimeler |
| Helianthus annuus,drought stress,antioxidant enzymes,proline |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | TURKISH JOURNAL OF BOTANY |
| Dergi ISSN | 1300-008X |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 11-2012 |
| Cilt No | 36 |
| Sayfalar | 707 / 714 |
| Doi Numarası | doi:10.3906/bot-1111-20 |
| Makale Linki | http://mistug.tubitak.gov.tr/bdyim/toc.php?dergi=bot&yilsayi=2012/6 |
| Atıf Sayıları | |
| WoS | 40 |
| SCOPUS | 45 |
| TRDizin | 11 |
