Study On The Methods Of Identification For Multiple Disease Resistance In Tomato Seedling And The Screening Of Resistant Source Of Tomato

The screening for multiple disease resistant resources in tomato play important role in breeding for multiple disease resistant tomato and is of great value to practical utilization. The results of the experiment showed that:I.The best method of identification of TN4V. Leaf Mould and Fusarium Wilt is: TMV is inoculated at 2 true leaf. Leaf Mould is inoculated at 3 true leaf, and Fusarium Wilt is inoculated at 4 true leaf; Or TMV is inoculated at 2 true leaf. Fusarium Wilt is inoculated at 3 true leaf, and Leaf Mould is inoculated at a excised leaf at the same time.2. The best method of identification ofTMV. Leaf Mould and Rot-knot Nematode is: Rot-knot Nematode is inoculated at 2 true leaf. TMV is inoculated at 3 true leaf, Leaf Mould is inoculated at 4 true leaf; Or Rot-knot Nematode is inoculated at 2 true leaf, TMV is inoculated at 3 true leaf, and Leaf Mould is inoculated at a excised leaf at the same time.3. The best method of identification of Fusarium Wilt.. Leaf Mould and Rot-knot Nematode is:Rot-knot Nematode is inoculated at 2 true leaf. Leaf Mould is inoculated at 3 true leaf, and Fusarium Wilt is inoculated at 4 true leaf; Or Rot-knot Nematode is inoculated at 2 true teaf, Fusarium Wilt is inoculated at 3 true leaf and Leaf Mould is inoculated at a excised leaf at the same time.4.The best method of identification of TMV-. Fusarium Wilt and Rot-knot Nematode is:Rot-knot Nematode is inoculated at 2 true leaf, TMV is inoculated at 3 true leaf, and Fusarium Wilt is inoculated at 4 true leaf.5.The best method of identification of TMV.. Leaf MouldFusarium Wilt and Rot-knotNematode is: Rot-knot Nematode is inoculated at 2 true leaf, TMV is inoculated at 4 true leaf,Fusarium Wilt is inoculated at 5 true leaf, Or Rot-knot Nematode is inoculated at 2 true leaf,TMV is inoculated at 3 true leaf, and Leaf Mould is inoculated at a excised leaf at the same time,Fusarium Wilt is inoculated at 4 true leaf.6.Through this identifying method, experiment identified the seedling resistance to three diseases of 100 tomato materials provided by our study group and screened 4 materials which resistant to three diseases, 19 materials which resistant to two diseases, and 37 materials which resistant to one disease.