Complex sentence: The Agriculture Research Station of Gonbad is one of the well known agricultural research station in Iran because of its considerable contribution to releasing high yielding varieties as well as finding lines and producing hybrids with greater stability and higher tolerance to harsh abiotic conditions prevailing in the region.
Split into simpler sentences: The Agriculture Research Station of Gonbad is one of the well known agricultural research stations in Iran because of its considerable contribution to releasing high yielding varieties. The researcers at the station try to find lines and to produce hybrids with greater stability and higher tolerance to harsh abiotic conditions prevailing in the region.