• Title/Summary/Keyword: 건열

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Post-conditioning Periods and Seed Orientation Affects the Vigor of Cucurbit Seeds with Dry-heat Treatment (건열처리에 따른 박과채소종자의 활력 회복)

  • Choi, Byung-Soon;Lee, Jung-Myung;Choi, Geun-Won
    • Horticultural Science & Technology
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    • v.32 no.1
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    • pp.26-32
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    • 2014

  • We investigate the effect of post-conditioning periods and seed orientation on the vigor of cucurbit seeds with dry heat treatment (DHT). All the dry-heat treated seeds exhibited varying degree of seed vigor decreases. In general, pumpkin seeds showed less vigor decreases than the bottle gourd seeds. When the dry heat treated seeds were germinated after post-conditioning for 0, 30, and 120 days, the percentage of germination was enhanced by increasing the period of post-conditioning and the efficiency of post-conditioning differed by crop and cultivar. In both bottle gourd and pumpkin, the vigor of seeds placed in vertically upward and horizontal orientations was higher than that of the seeds placed in the vertically downward orientation. The results suggested that the vigor of dry-heat treated seeds could be improved by applying the proper post-conditioning and seed orientation.

  • https://doi.org/10.7235/hort.2014.13063 인용 PDF KSCI

Relationships among Viviporous Germination, Dry-heat Tolerance and Seed Longevity in Milyang 23/Gihobyeo RILs (벼 밀양 23호$\times$기호벼의 재조합 자식계통에서 수발아성,건열 저항성 및 종자수명간 상관관계)

  • Lee, Seung-Yeob;Ahn, Jeong-Ho;Kim, Hyo-Jin;Bae, Jong-Hyang;Eun, Moo-Young
    • Journal of Bio-Environment Control
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    • v.15 no.4
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    • pp.421-427
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    • 2006

  • To investigate the relationships among the traits related seed dormancy in rice, viviparous germination, dry-heat tolerance and seed longevity were tested using 164 M/G RILs ($F_{17}$) derived from the cross between Milyang 23 (Indica/Japonica) and Gihobyeo (Japonica). At 40 days after heading, the viviparous germination rates of Milyang 23 and Gihobyeo were 0.0 and 7.0%, respectively. The averaged viviparous germination rate of 164 MIG RILs was 3.2%, and their range was from 0.0 to 50.9%. In dry-heat treatment at $90^{\circ}C$ for 24 h followed by the pre-drying at $40^{\circ}C$ for 2 days, Milyang 23 showed higher germinability (98.6%,2.7 days to $T_{50}$) than Gihobyeo (37.6%, 12.9 days to $T_{50}$), and the mean germination rate of 164 M/G RILs was 72.4%. In 54 months after harvest, the germinability in Milyang 23 and Gihobyeo were 90% and 0%, and 71 lines among 164 M/G RILs showed the germinability over 90%. The relationship between seed longevity and dry-heat tolerance was linearly correlated with high positive correlation coefficient. The relationships between seed longevity and viviparous germination, and viviparous germination and dry-heat tolerance were linearly correlated with high negative correlation coefficient. Milyang 23 had higher tolerance against high dry-heat, viviparous germination and long-term storage than Gihobyeo, and 164 M/G RILs showed the medium values of parents.

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Effects of Heat Temperature in Sizing and Pretreatment Processes on the Appearance Colour of the Polyester Fabrics (사이징 및 전처리 공정에서의 열처리 온도 변화에 따른 폴리에스테르 직물의 염색성 변화)

  • Cho, D.H.;Kim, S.J.;Chang, D.H.
    • Textile Coloration and Finishing
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    • v.11 no.2
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    • pp.1-8
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    • 1999

  • 이 연구에서는 사이징 공정을 포함해서 수세, 전처리 그리고 최종 열처리 둥의 염색.가공 공정에서의 습열 및 건열 처리 온도가 폴리에스테르 직물의 열응력과 염색성에 미치는 영향을 조사하였다. 사용된 폴리에스테르 필라멘트사는 경사가 50d/24f 스파크사이며 위사는 75d/72f semi-dull사이다. 평직물은 션틀직기, 주자직물은 water jet 직기로 제직하였으며, sizing dryer 온도는 $90^\circ{C}$, $125^\circ{C}$, $150^\circ{C}$, 수세공정의 습열처리 온도는 $90^\circ{C}$, $110^\circ{C}$, $120^\circ{C}$, 전처리 공정의 건열처리 온도는 $180^\circ{C}$, $200^\circ{C}$, $220^\circ{C}$, 마지막 세팅 공정의 건열처리 온도는 $170^\circ{C}$, $180^\circ{C}$, $200^\circ{C}$로 변화시켰다. 이들 습열과 건열처리 온도 변화에 따른 직물내의 필라멘트사의 열 수축률과 직물의 겉보기 염색성의 변화를 조사 분석하였다.

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