Question

Which of the following tuberose cultivars were developed through induced mutation?
(A). Pusa Manmohak
(B). Rajat Rekha
(C). Pusa Anmol
(D). Swarna Rekha

• A. A and B only
• B. B and C only
• C. A and D only
• D. B and D only

Hint:

In tuberose, the varieties ending in “Rekha” (meaning line/streak)—“Rajat Rekha” (silvery margins) and “Swarna Rekha” (golden margins)—are famous gamma-ray induced foliage mutants developed at NBRI, Lucknow.

Answer 1

The Correct Option is D

To determine which tuberose cultivars were developed through induced mutation, we need to identify the correct options based on horticultural knowledge and advancements regarding the development of tuberose cultivars.

Among the listed options, the cultivars ‘Rajat Rekha’ and ‘Swarna Rekha’ were developed through induced mutation. Here’s the reasoning for why these are the correct choices:

1. Rajat Rekha: This is a known mutant variety developed through induced mutation breeding. It is characterized by its variegated appearance, making it unique in terms of coloration and pattern.
2. Swarna Rekha: Similar to Rajat Rekha, Swarna Rekha is another cultivar developed by inducing mutations. It is recognized for its distinct and attractive features that were achieved through mutation techniques.

The other options, 'Pusa Manmohak' and 'Pusa Anmol,' are not developed through induced mutation but through other horticultural breeding techniques, or they belong to a different categorization of development.

Hence, the correct option is "B and D only" – signifying Rajat Rekha and Swarna Rekha.