종자발아율, 수량, 그리고 화분발아율 비교를 통한 내서성 고추 자원 선발

This study was conducted to select heat tolerant pepper accessions in tropical regions. Fruit yield and pollen germination rate between heat stress and normal condition as well as germination rate between seeds harvested in summer and fall were compared using 46 pepper accessions including 34 from Rural Development Administration and 12 from World Vegetable Center. For seed germination rate, the relative injury rate of summer seed ranged between 4.3 to 100%. Among accessions, H42 (1.6%), H16 (5.0%), H14 (6.3%), H02 (12.4%), H44 (13.7%), H12 (15.9%), H03 (17.6%) and H17 (23.4%) showed lower injury rate in seed germination than H37 (26.2%) which is known for its heat tolerance. Fruit yield and number per plant were in the range of between 34.4 to 446.5g and 2.0 to 134.3 fruits, respectively. The marketable fruit ratio ranged between 41.0 to 95.0% and accessions producing marketable fruits more than 75% were H22 (95.0%), H16 (89.1%), H37 (88.4%), H40 (86.4%), H6 (86.0), H27 (83.7%), H04 (83.6%), H03 (82.6%), H08 (81.1%), H44 (81.4%), H02 (80.0%), H45 (79.1%), H17 (78.7%), H19 (77.7%), H34 (77.0%), H15 (76.9%), and H42 (76.3%). The relative injury rate of pollen germination in heat stress condition was low in H06 (59.5%), H14 (74.4%), H44 (85.3%) and H03 (90.2%) compared to a control, H37 (94.9%). Based on the results of seed germination, marketable fruit yield and pollen germination, H03, H04, H06, H14, H17, H22, H44, H45 were selected for heat tolerance in tropical climate.