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Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.15, no.4, 2006³â, pp.421-427
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( Relationships among Viviporous Germination, Dry-heat Tolerance and Seed Longevity in Milyang 23/Gihobyeo RILs )
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¹Ð¾ç 23È£/±âÈ£º­ À¯·¡ 164 RILs($F_{17}$)À» ÀÌ¿ëÇÏ¿©, Á¾ÀÚÀÇ ÈÞ¸é°ú °ü·ÃÀÌ ÀÖ´Â ¼ö¹ß¾Æ ÀúÇ×¼º, °Ç¿­ ÀúÇ×¼º ¹× Á¾ÀÚ¼ö¸íÀ» °ËÁ¤Çϰí, ÀÌµé »óÈ£°£ »ó°ü°ü°è¸¦ Á¶»çÇÏ¿´´Ù. Ãâ¼ö 40Àϰ¿¡ ¹Ð¾ç23È£¿Í ±âÈ£º­ÀÇ ¼ö¹ß¾ÆÀ²Àº 0%, 7%À̾ú°í, M/G RILsÀº 0$sim$50.9%ÀÇ ¹üÀ§¸¦ º¸¿´À¸¸ç, Æò±Õ 3.2%¿´´Ù. $90^{circ}C$, 24½Ã°£ °Ç¿­Ã³¸®ÈÄ ¹Ð¾ç23È£¿Í ±âÈ£º­´Â 99.2%, 37.6%ÀÇ ¹ß¾ÆÀ²À» º¸¿´°í, $T_{50}$Àº 2.7ÀÏ, 12.9ÀÏ·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´À¸¸ç, M/G RILsÀÇ Æò±Õ ¹ß¾ÆÀ²Àº 72.4%¿´´Ù. »ó¿ÂÀúÀå ÇÑ Á¾ÀÚ¼ö¸íÀº ¹Ð¾ç23È£´Â ¼öÈ®ÈÄ 3.5³â±îÁöµµ 80% ÀÌ»óÀÇ Á¾ÀÚ ¹ß¾ÆÀ²À» À¯ÁöÇÏ¿´À¸³ª, ±âÈ£º­´Â 18°³¿ù ÈĺÎÅÍ ±Þ°ÝÈ÷ ¹ß¾Æ·ÂÀÌ °¨¼ÒÇÏ¿©(30%ÀÌÇÏ), 42°³¿ù ÈÄ ¹ß¾Æ·ÂÀ» ¿ÏÀüÈ÷ »ó½ÇÇÏ¿´´Ù. M/G RILsÀÇ Á¾ÀÚȰ·ÂÀº ¼öÈ®ÈÄ 42°³¿ù±îÁö 71°èÅëÀÌ 90%ÀÌ»óÀÇ ¹ß¾ÆÀ²À» º¸¿´´Ù. ¼ö¹ß¾Æ ÀúÇ×¼º, °Ç¿­ ÀúÇ×¼º ¹× Á¾ÀÚ¼ö¸íÀº ¹Ð¾ç 23È£¿Í ±âÈ£º­ °£¿¡ ¶Ñ·ÇÇÑ Ç°Á¾°£ Â÷À̸¦ º¸¿´À¸¸ç, M/G RILsÀº ¾çÄ£ÀÇ Áß°£°ª¿¡ °¡±î¿î Æò±Õ°ªÀ» º¸¿´´Ù. °Ç¿­ÀúÇ×¼º°ú Á¾ÀÚ¼ö¸í °£¿¡´Â °íµµ·Î À¯ÀÇÇÑ Á¤ÀÇ »ó°ü°ü°è¸¦ º¸¿´°í, ¼ö¹ß¾Æ¿Í Á¾ÀÚ¼ö¸í, ¼ö¹ß¾Æ¿Í °Ç¿­ÀúÇ×¼º °£¿¡´Â ºÎÀÇ »ó°ü°ü°è°¡ ¼º¸³ÇÏ¿´´Ù.
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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°Ç¿­ÀúÇ×¼º;º­;»ó°ü°ü°è;¼ö¹ß¾Æ;Á¾ÀÚ¼ö¸í;correlation;dry-heat tolerance;rice;seed longevity;viviparous germination;
 
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.15, no.4, 2006³â, pp.421-427
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200608506271618)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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