Step 1: Understanding the Concept:
Tomatoes are highly sensitive to temperature fluctuations.
Extreme temperatures (either too high or too low) can impair pollen viability, flower fertilization, and fruit set, leading to poor crop yields.
To overcome this, plant breeders have developed specialized varieties that can tolerate temperature extremes and maintain stable yields throughout the year.
Step 2: Detailed Explanation:
The variety Pusa Sadabahar was developed by the Indian Agricultural Research Institute (IARI) in New Delhi.
The name "Sadabahar" translates to "evergreen" or "perennial," reflecting its adaptability to multiple seasons.
This variety is genetically designed to set fruit under both low-temperature conditions (common in winter) and high-temperature conditions (common in summer).
This temperature tolerance makes it highly suitable for year-round cultivation in regions that experience significant seasonal temperature fluctuations.
Other varieties like Pusa Uphar and Pusa Gaurav are developed for specific processing traits or standard season cultivation, but do not possess the same wide temperature tolerance as Pusa Sadabahar.
Therefore, Pusa Sadabahar is the correct choice.
Step 3: Final Answer
The tomato variety suitable for cultivation at both high and low temperatures is Pusa Sadabahar.