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Full-Text Articles in Forest Sciences
Effects Of Water Stress On Germination In Six Provenances Of Pinus Brutia Seeds From Different Bioclimatic Zones In Turkey, Meli̇h Boydak, Hüseyi̇n Di̇ri̇k, Fahretti̇n Ti̇lki̇, Mehmet Çalikoğlu
Effects Of Water Stress On Germination In Six Provenances Of Pinus Brutia Seeds From Different Bioclimatic Zones In Turkey, Meli̇h Boydak, Hüseyi̇n Di̇ri̇k, Fahretti̇n Ti̇lki̇, Mehmet Çalikoğlu
Turkish Journal of Agriculture and Forestry
The effects of water potential on germination were studied in six provenances of Pinus brutia from different bioclimatic zones in Turkey. Water potentials between 0 and -8 bars were obtained using polyethylene glycol 6000 (PEG-6000) solutions. Seeds were kept for 28 d in light (12 h photoperiod at 1000 lux) and at 20 ± 0.5 ^oC. A decrease in water potential produced a marked reduction in germination percentage, germination speed and germination value. Significant variations between the provenances were found. The provenances of humid regions were the most susceptible to high moisture stress, and their germination value and germination percentage …
Effects Of Different Soil Salinity Levels On Germination And Seedling Growth Of Safflower (Carthamus Tinctorius L.), Mehmet Demi̇r Kaya, Ari̇f İpek, Ahmet Öztürk
Effects Of Different Soil Salinity Levels On Germination And Seedling Growth Of Safflower (Carthamus Tinctorius L.), Mehmet Demi̇r Kaya, Ari̇f İpek, Ahmet Öztürk
Turkish Journal of Agriculture and Forestry
Safflower (Carthamus tinctorius L.) is rated as moderately salt tolerant and it can produce profitable crops on saline soils. It is slightly more tolerant of salinity than barley but is more tolerant than wheat. Because salinity reduces germination and delays emergence, safflower stands tend to be irregular and crop yield is depressed. However, some varieties are less affected by salinity than others. In this study, we aimed to determine the effects of soil salinity levels (0.8, 2.5, 5.1, 8.7, 13.0, 15.2 and 23.0 dS m^{-1}) on germination and seedling growth of three safflower varieties, one of which is spiny (5-154 …