‘바로미2’의 수발아 발생이 종자의 발아 및 어린모 생육에 미치는 영향

• Published in: Korean journal of crop science Vol. 69; no. 4; pp. 225 - 232
• Main Authors: 백재경, Jaekyeong Baek, 양서영, Seoyoung Yang, 문지현, Ji-hyeon Mun, 이현석, Hyeon-seok Lee, 송영서, Yeong-seo Song, 김주희, Ju-hee Kim, 조소혜, So-hye Cho, 손지영, Jiyoung Shon
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 31.12.2024
• Subjects: germination percent; pre-harvest sprouting(PHS); rice; seed viability; seedling rate; 농학; germination percent; rice; pre-harvest sprouting(PHS); seed viability; seedling rate
• ISSN: 0252-9777; 2287-8432
• DOI: 10.7740/kjcs.2024.69.4.225

Owing to its rapid water absorption rate, rice variety ‘Baromi2’ is sensitive to pre-harvest sprouting(PHS), especially when the grain is exposed to prolonged rainfall or high humidity. Aside from causing a reduction in both grain yield and quality, PHS also affects the germination rate, making utilization of the seed difficult. Therefore, in this study, we analyzed the effects of the PHS damage rate and seed disinfection method on seed germination and seedling growth. Seed viability decreased with increase in PHS, being lower than 70% when PHS was above 7%. Moreover, the germination rate decreased under hot water and hot water + pesticide disinfection, decreasing to 85% or less when the PHS or immature grain rate was 7% or higher. These results suggest that when the percentage of PHS or immature grains is more than 7%, hot water disinfection may adversely affect seed germination and seedling growth, indicating the need for careful seedling management.