اثرات دمای بالا و مدت زمان در معرض بودن بر زنده‌مانی غده توده‌های مختلف اویارسلام ارغوانی (Cyperus rotundus L.)

In order to evaluate the effects of high temperature and time of exposure to high temperatures on various populations of purple nutsedge tubers of the trait in 2012 at Birjand University Research Lab and Greenhouse was conducted. A factorial experiment carried out with three replications. Treatments included different temperatures from 40 to 60°C with 5°C increments, exposure time including 1, 2, 4, 8, 16, 32 and 64 hours as well as two nutsedge populations including Birjand and Jiroft. After exposing tubers to high temperatures at corresponding times, they were planted in a greenhouse for 50 days. The trial results indicated that at all exposure times, the 40 °C temperature did not affect the growth characteristics of purple nutsedge While at 45 °C, lengthening the exposure time decreased the growth characteristics of purple nutsedge populations, at high temperatures (60 and 65°C) the tubers of purple nutsedge were killed at all exposure times.