Class 12 Biology Enhancement In Food Production Plant breeding for disease resistance

Plant breeding for disease resistance

  • To prevent the plants from bacterial, fungal, viral infections, cultivars resistant to diseases is developed which reduce the dependence on fungicide or insecticide.
  • Fungi can cause brown rust of wheat, red rot of sugarcane, late blight of potato.
  • Bacteria can cause black rot of crucifer.
  • Virus can cause tobacco mosaic, turnip mosaic etc.

Method of breeding for disease resistant-

  • Screening of germplasm for resistance sources.
  • Hybridization of selected parent.
  • Selection and evaluation of hybrids.
  • Testing and release of new varieties.

Sl no.

               Crop

              Variety

          Resistance to diseases

1

Wheat

Himgiri

Leaf and stripe rust, hill bunt

2

Brassica

Pusaswarnim

White rust

3

Cauliflower

Pusashubhra

Black rot and curl blight rot

4

Cow pea

Pusakomal

Bacterial blight

5

Chili

Pusasadabahar

Chily mosaic virus, tobacco mosaic virus and leaf curl.

 

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