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Effect of Humidification and Hardening Treatment on Seed Germination of Rice
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  • Effect of Humidification and Hardening Treatment on Seed Germination of Rice
  • Effect of Humidification and Hardening Treatment on Seed Germination of Rice
저자명
Lee. Suk-Soon,Kim. Jae-Hyeun,Hong. Seung-Beom,Yun. Sang-Hee
간행물명
Korean journal of crop science
권/호정보
1998년|43권 3호|pp.157-160 (4 pages)
발행정보
한국작물학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

To find out the effects of humidification and hardening of rice (Oryza sativa L. cv. Ilpumbyeo) seeds on the germination, both normal and artificially aged seeds with 60% germination rate were humidified at 40, 60, and 80% RHs and $25^{circ}C$ for five weeks or hydrated for 6, 12, 18, and 24 hours at $25^{circ}C$ from one to five cycles for hardening. Relative humidity and duration of humidification did not affect the germination rate of normal seeds, while reduced the time to get 50% germination rate ($T_{50}$) by 1.0~1.6 days compared to that of normal seeds at $25^{circ}C$. Aged seeds humidified at 40 and 60% RHs did not affect the germination rate and $T_{50}$ regardless of relative humidity and duration of treatment, while at 80% RH, the germination rate decreased and $T_{50}$ increased significantly with the duration of humidification. Hardening of normal seeds reduced $T_{50}$ by 0.7~1.1 days without changes in the germination rate. However, the germination rate and $T_{50}$ of aged seeds soaked in water for 6, 12, and 18 hours were similar regardless of soaking/drying cycles, while hardening of artificially aged seeds with 1~4 cycles in 24 hours soaking increased the germination rate by 11-16% and reduced $T_{50}$ by 1.4~2.0 days.