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Name the Tropical Sugar Cane Variety Grown in South India. How Has It Helped in Improving the Sugar Cane Quality Grown in North India? - Biology

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(a) Name the tropical sugar cane variety grown in South India. How has it helped in improving the sugar cane quality grown in North India?
(b) Identify 'a', 'b' and 'c' in the following table:

No. Crop Variety Insect Pests
1. Brassica Pusa Gaurav    (a)   
2. Flat bean Pusa Sem 2
Pusa sem 3
   (b)  
 
3.    (c)   Pusa Sawani
Pusa A-4
Shoot and fruit borer
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Solution

(i) The tropical sugarcane variety grown in Southern India is Saccharum officinarum which has  a thicker stem and high sugar content; however, it cannot grow in Northern India. Saccharum barberi is a natively grown in Northern India.
These two varieties were crossed to get the desirable qualities of both (higher sugar content, thicker stem and the ability to grow in Northern India).

(ii)  

No. Crop Variety Insect Pests
1. Brassica Pusa Gaurav   Aphids   
2. Flat bean Pusa Sem 2
Pusa sem 3
Jassids and fruit borer
 
3. Okra (Bhindi) Pusa Sawani
Pusa A-4
Shoot and fruit borer
Concept: Plant Breeding
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