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Çѱ¹»ýÅÂÇÐȸ / v.17, no.3, 1994³â, pp.367-378
¿Âµµ¿¡ ´ëÇÑ µ¹ÇÇ(Echinochloa crus-galli) Á¾ÀÚÀÇ ¹ß¾Æ¹ÝÀÀ
( Germination Responses of Echinochloa crus - galli Seeds to Temperature )
ÀÌÈ£ÁØ;¼º¹Ì¼±;·ùº´Çõ; °Ç±¹´ëÇб³ À̰ú´ëÇÐ »ý¹°Çаú;°Ç±¹´ëÇб³ À̰ú´ëÇÐ »ý¹°Çаú;°Ç±¹´ëÇб³ À̰ú´ëÇÐ »ý¹°Çаú;
 
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µ¹ÇÇ(Echinochloa crus-galli (L.) Beauv.) Á¾ÀÚ´Â »êÆ÷ Á÷ÈÄ »ó¿Â¿¡¼­ ÈÞ¸é»óÅ·Π¹ß¾Æ°¡ ¾ïÁ¦µÇ°í ÀÖÀ¸³ª ÀúÀå±â°£ÀÌ Áö³ª¸é¼­ ÈÞ¸éÀÌ Å¸ÆÄµÇ¾î 7~17°³¿ùÈÄ¿¡ 16~40$^{circ}C$ÀÇ ¿Âµµ¿¡¼­ 85~95%ÀÇ ÃÖ´ë¹ß¾ÆÀ²À» ³ªÅ¸³»¾ú´Ù. µ¹ÇÇÁ¾ÀÚ°¡ 10~70% ¹ß¾ÆÇϴµ¥ ¿ä±¸µÇ´Â Àû»ê¿Âµµ´Â 539~1,279Kh (degree kelvinXhours)À̸ç Àû»ê¿Âµµ ºÐÆ÷ÇÔ¼öÀÎ F($ heta$)=1-[3D-3($ heta$-m+D)3+1]-1/2¿Í ÀÏÄ¡ÇÏ¿´°í m°ú DÀÇ °ªÀº °¢°¢ 935Kh¿Í 555kh·Î ³ªÅ¸³µ´Ù. 2$^{circ}C$¿¡¼­ ³Ã½Àó¸®ÇÑ ÈÄ, 16~40$^{circ}C$ÀÇ Ç׿ Á¶°ÇÇÏ¿¡ 4$^{circ}C$ °£°ÝÀ¸·Î ó¸®ÇÑ µ¹ÇÇÁ¾ÀÚ´Â ÃÖÁ¾¹ß¾ÆÀ²°ú ¹ß¾Æ¼Óµµ°¡ ´ëÁ¶±¸¿¡ ºñÇØ Áõ°¡ÇÏ¿´´Ù. IT regime¿¡ À־´Â 12$^{circ}C$ºÎÅÍ ¹ß¾Æ¼Óµµ°¡ Áõ°¡ÇÏ¿© 24$^{circ}C$¿¡¼­ ÃÖÁ¾¹ß¾ÆÀ²ÀÌ 80%°¡ µÇ¾úÀ¸¸ç, DT regimeÀº 24$^{circ}C$¿¡¼­ 0$^{circ}C$·Î Çϰ­ÇÏ´Â µ¿¾È 12$^{circ}C$¿¡¼­ºÎÅÍ ¹ß¾Æ°¡ ½ÃÀ۵ǾúÀ¸¸ç(¹ß¾ÆÀ² 10%), 8$^{circ}C$¿¡¼­ 20%ÀÇ ÃÖÁ¾¹ß¾ÆÀ²À» ³ªÅ¸³»¾ú°í 4$^{circ}C$ºÎÅÍ´Â 2Â÷ ÈÞ¸éÀÌ À¯µµµÇ¾ú´Ù. µ¹ÇÇÁ¾ÀÚ´Â ºñ±³Àû ³ÐÀº ¹ß¾Æ±â´É ¿Âµµ¹üÀ§¸¦ °¡Áö°í ÀÖÀ¸¸ç °³Ã¼±º³»ÀÇ ¹ß¾Æ½Ã±âÁ¶Àý¿¡ ÀÇÇØ ´Ù¾çÇÑ È¯°æº¯È­¿¡¼­µµ Àß ÀûÀÀÇÒ ¼ö ÀÖÀ¸¸ç º¯¿Â°ú °Ü¿ïÀÇ Àú¿Â¿¡ ÀÇÇØ ÈÞ¸éÀÌ Å¸ÆÄµÇ°í º½ÀÇ ±â¿Â»ó½Â°ú ÇÔ²² ¹ß¾ÆÇÏ´Â º½¹ß¾ÆÇü Á¾ÀÚÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
The germination responses of Echinochloa crus-galli (L.) Beauv. seeds to temperature were examined under the various thermal conditions. While almost all the seeds tested did not germinate immediately after collection, almost of the seeds which were stored for 7, 10, and 17 months showed very high germination percentages (85-95%) at their own constant temperatures between $16^{circ}C;and;40^{circ}C$. The total thermal time which was required for germination(10-70%) of Echinochloa crus-galli seeds ranged from 539Kh(degree Kelvin X hour) to 1,279Kh in accordance with the distribution function of thermal time, $F({Theta})=1-[3D^{-3}({Theta}-m+D)+1]^{-1/2}$, where m is 935Kh and D is 555Kh. Moist chilling treatment at $2^{circ}C$ for 20 days increased the final germination percentage as well as the germination rate. In the increasing temperature(IT1 regime, E. crus-galli seeds started to germinate at $12^{circ}C$. and showed greater germination rate with increasing temperatures, with the final germination percentage of 80%. On the other hand, in the decreasing temperature(DT1 regime, the seeds began to germinate at $12^{circ}C$(10% germination) with the final germination percentage of 20%. An induced dormancy occurred at $4^{circ}C$ in the DT regime.
 
Ű¿öµå
Base temperature;Echinochloa crus-galli;Germination percentage;Germination responses;Required thermal time;
 
The Korean Journal of Ecology / v.17, no.3, 1994³â, pp.367-378
Çѱ¹»ýÅÂÇÐȸ
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411919966365)
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