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Hwang, Hyeon-Jeong;Lee, Jung-Myung;An, Jong-Moon;Kim, Se-Young;Choi, Geun-Won
- Korean Journal of Environmental Agriculture
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- v.26 no.4
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- pp.325-331
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- 2007
A series of experiments were performed to evaluate effects of lettuce seed treatment with low temperature and dry heat treatment (DHT) on bolting response in the case of spring cultivation. During spring production in greenhouse, bolting response of the plants produced from the treated seeds was faster in the order of low temperature treatment, control and DHT. Plant height was increased 5-10 cm higher by low temperature treatment, but plant growth of some cultivars was inhibited by DHT. Difference on lettuce plant growth between low temperature treatment and DHT was gradually diminished with the lapse of time after transplanting. Fresh weight of plant was not significantly different among all treatments. 'Red Gyeolku' showed very early bolting response and plant height was significantly promoted by low temperature treatment. However, 'Cheongchima' showed low bolting percentage after various seed treatments, so it is considered late-bolting cultivar.
https://doi.org/10.5338/KJEA.2007.26.4.325 인용 PDF KSCI

Na, Young-Wang;Baek, Hyung-Jin;Choi, Yu-Mi;Lee, Sok-Young;Lee, Jung-Ro;Chung, Jong-Wook;Park, Yong-Jin;Kim, Seok-Hyeon
- KOREAN JOURNAL OF CROP SCIENCE
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- v.59 no.3
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- pp.230-238
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- 2014
The purpose of this study was to develop the cost-effective and efficiency seed longevity prediction method of rice (Oryza sativa L.) germplasm for viability monitoring. To find an optimum predicting method for rice seed longevity at genebank, an accelerated ageing (AA) test, a controlled deterioration (CD) test and a dry-heat treatment (DHT) were conducted to the four groups of rice germplasm based on ecotype, such as Indica, Japonica, Javanica and Tongil type. Among the three artificial aging treatments, the dry-heat treatment of 36 hours at $90^{\circ}C$ is suggested as a routine predictive test method of rice germplasm longevity at a genebank. The distribution of germination rate on 3,066 accessions which conserved 26.5 years at $4^{\circ}C$ showed similar trend with the result of distribution by dry-heat treatment at $90^{\circ}C$ on 36 hours using 106 accessions of rice selected samples which composed four ecotype groups. The results show that the dry-heat treatment affect not only predicting the rice seed longevity but also determining effective interval for monitoring germination of rice germplasm in genebanks.
https://doi.org/10.7740/kjcs.2014.59.3.230 인용 PDF KSCI