Breeding Vitis rupestris X Muscadinia rotundifolia rootstocks to control Xiphinema index and fanleaf degeneration

First two sentences: Fanleaf degeneration, caused by grapevine fanleaf virus (GFLV) and vectored by the dagger nematode, Xiphinema index, remains one of the world's most serious grape diseases. Muscadinia rotundifolia has a very strong reisitance to X. index feeding and has been reported to resist GFLV.