In which pulse crop was the first commercial hybrid developed?

✅Explanation: Pigeon pea (Cajanus cajan) is the first pulse crop in which a commercial hybrid was developed. The hybridization of pigeon pea was a significant achievement in agricultural science, as it led to the development of varieties with higher yield potential, better disease resistance, and improved adaptability to diverse growing conditions.
The first commercial hybrid of pigeon pea, ICPH 2671, was developed by ICRISAT (International Crops Research Institute for the Semi-Arid Tropics). It demonstrated up to 40% higher yields than traditional varieties.