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Discuss the method of breeding for disease resistance.
 
a. Pathogens such as  cause plant diseases and attack the cultivated crops.
 
b. Plant diseases does not affect crop yield.
 
c.  is the disease resistant variety of wheat, which is resistant to leaf and stripe rust, hill bunt.
 
d. Pusa Snowball \(K-1\) is the disease resistant variety of , which is resistant to black rot.
 
e.  is the disease resistant variety of cowpea, which is resistant to bacterial blight.
 
f. Pusa Sadabahar is the disease resistant variety of , which is resistant to
chilly mosaic virus, tobacco mosaic virus and leaf curl.