Some Examples of Initial RELP Linked Mapping of Major Genes of Economic Value in Some Crops, Tomato, Potato, Maize, Barley

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Home >> Plant Biotechnology and Genomics >>Construction of Molecular Maps and Synteny (Collinearity) >>Some Examples of Initial RELP Linked Mapping of Major Genes of Economic Value in Some Crops

Some examples of initial RFLP linked mapping of major genes of economic value in some crops.

Crop	Gene located on RFLP map	Lines used	Reference
1. Tomato	(a) Tm-2a locus for resistance of TMV (b) Gene 12 and 11 for resistance against Fusarium axysporium (c) Gene Mi for resistance against root knot nematode (Meloidogyne spp.) (d) Gene Sm for Stemphylium resistance	Near isogenic lines (NILs) Near isogenic lines (NILs) and BC population Near isogenic lines (NILs) Near isogenic lines (NILs)	Young et al., 1988 Sarfatti et al., 1989, 1991 Klein-Lankhorst et al., 1991 Bchare et al., 1991
2. Potato	(a) Gene for resistance against cyst nematode (Globodora rostochiensis) (b) Two genes (Rx1, Rx2) for resistance against potato virus X (PVX)	Two diploid clones Two F₁ population	Barone et al., 1990 Ritter et al., 1991

Crop	Gene located on RFLP map	Lines used	Reference
3. Maize	Gene for resistance against maize dwarf mosaic virus (MDMV)	Near isogenic lines (NILs)	McMullen and Louie, 1989
4. Barley	ml-o locus for resistance against Erysiphe graminis f sp. hordei	Near isogenie lines (NILs) and two subspecies of Hordeum vulgare	Hinze at al., 1991
5. Sugarbeet	Gene for resistance against a nematode (Heterodera schachtii)	Addition of a Beta procumbens chromosome	Jung et al., 1990
6. Rice	Two genes for blast resistance, Pi-2 (t) and Pi-4(t)	Near isogenic lines (NILs)	Yu et al., 1991

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