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Current Category » Breeding of Field and Horticultural Crops

Source of Drought Resistance in Plant Breeding

There are three main sources of drought resistance in crop plants: 1) Cultivated varieties, 2) Germplasm collections, and 3) Wild relatives and wild species. Transfer of drought resistance is easy from cultivated variety and germplasm of cultivated species, because such material can be easily used in the breeding programmes. Moreover, there is no problem of cross incompatibility. When the source of drought resistance is a wild species, the transfer of resistance poses several problems such as cross incompatibility, hybrid inviability, hybrid sterility and linkage of several undesirable genes with desirable ones. Wild sources of drought resistance have been reported in wheat, sugarcane, tomato, and several other crops.

Wild Sources of Resistance to Drought and Salinity in Some Crop Plants:

Name of Crop

Name of Wild Species

Resistant Available for

Wheat

Aegliops kotsehyi

Drought

 

Ae.variabills

Drought

 

Ae.speltoider

Drought

 

Ae. Umbellulata

Drought

 

Ae.squarrosa

Drought

 

Agropyron seirpea

Salinity

 

A.pontica

Salinity

 

A.junceiformis

Salinity

 

A.cliac

Salinity

Sugarcane

Saccharum spontaneum

Drought and Salinity

 

Lycopersicon cheesmanii

Salinity

Current Category » Breeding of Field and Horticultural Crops