RESUMEN
Spine gourd (Momordica dioica Roxb., 2n = 2X= 28) is a nutritionally rich, perennial and dioecious cucurbit with good assortment of adaptability. Varieties of spine gourd improved germplasm/varieties collected from farmers' field and were sown in Completely Randomized Design (CRD) with Three replications at Acharya Narendra Deva University of Agriculture and Technology Ayodhya, Uttar Pradesh, India during monsoon season 2020. Biochemical characteristics of spine gourd analysis revealed that maximum Protein content (3.09mg/100g) was found in variety Kheri-3,1. Total free amino acid content (6.90mg/100g) was found in variety NDMD-2. Minimum protein content was found in the variety Arka Bharat (2.94mg/100g) and Total Free Amino acid content was reported in the variety Ambika-K-13,6 (6.27mg/100g). Based on observation, variety Kheri-3,1 and NDMD-2 were found superior in both Protein and Total Free Amino acid parameters followed by germplasm Arka Bharat and Ambika-13,6 respectively.