Iran (Islamic Republic of)

adapted to mountains with rain fed foothills and foothill steps with < 950 mm rain, hot, humid summer (up to 40 °C) and moderate winters (as low as -4 °C), with little snow covering the soil. Critical period is summer.

adapted to plain steppes with < 150 mm rain, cold winters (as low as -20 °C) and hot, dry summers (up to 40 °C).

adapted to mountains with rain fed foothills and foothill steps with < 300 mm rain and hot,dry summers (up to 43 °C) and cold winters (as low as -14 °C). Critical period is summer.

adapted to mountains with rain fed foothills and foothill steps with < 1300 mm rain, hot summer (up to 37 °C) and humid and moderate winter (as low as -19 °C) and with little snow covering the soil. Critical period is summer.

adapted to mountains with rain fed foothills and foothill steps with < 490 mm rain, hot, dry summers (up to 44 °C) and cold winters (as low as -27 °C), with little snow covering the soil. Critical period is winter.

adapted to mountains, plain steppes with < 140 mm rain, cold winters (as low as -13 °C) and hot, dry summers (up to 44 °C).

adapted to mountains with rain fed foothills and foothill steps with < 325 mm rain, hot summer (up to 41 °C) and semi-dry and cold winter (as low as -26 °C) and with little snow covering the soil. Critical period is winter.