Dashehari-51′ is a variety free from the incidence of (RAU BIKANER & UDAIPUR 2013)

✅Explanation: 'Dashehari-51' is a mango variety known for its resistance to mango malformation disease, a serious problem affecting mango production.

📌Other Options Explanations
-(a) Alternate bearing: This is the tendency of some fruit trees to produce a heavy crop one year and a light crop the next. 'Dashehari-51' might still exhibit alternate bearing.
-(c) Anthracnose: This is a fungal disease that can affect mangoes caused by Colletotrichum gloeosporioides.
-(d) Spongy tissue: This is another physiological disorder of mangoes. 'Dashehari-51' might still be susceptible to it.