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Çѱ¹ÀܵðÇÐȸ / v.15, no.3, 2001³â, pp.127-136
Àܵð¹ç ÀâÃÊ ¹Ù·©ÀÌ(Digitaria sp.)ÀÇ Á¾³» ¹× Á¾°£ º¯À̼º
( Inter-and Interspecific Variation in Smooth(D. ischaemum) and Large Crabgrass (D. sanguinalis) )
±èÅÂÁØ;; Çѱ¹È­Çבּ¸¼Ò »ý¹°È­Çבּ¸ºÎ;³ë½ºÄ³·Ñ¶óÀ̳ª ÁÖ¸³´ëÇÐ ¿ø¿¹Çаú;
 
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Àܵð¹ç¿¡ ¹®Á¦½ÃµÇ´Â 1³â»ý È­º»°ú ÀâÃÊÀÎ ¹Ù·©ÀÌ(Digitaria sp.)ÀÇ Á¾³» ¹× Á¾°£ º¯À̼ºÀ» D. ischaemum°ú D. SanguinalisÀÇ 5°³ Áö¿ªÁ¾À» ´ë»óÀ¸·Î »ýÀ°»ó°ú Æ÷ÀåÁ¶°Ç¿¡¼­ ¾Ë¾Æº¸¾Ò´Ù. Æ÷Àå½ÇÇè°á°ú D. sanguinalis¿Í D. ischaemumÀÇ Á¾³» ¶Ç´Â Á¾°£ÀÇ ÀÙÀÇ ±æÀÌ¿Í Æø µîÀ» Æ÷ÇÔÇÑ ÇüÅÂÀû ÇüÁú¿¡ °ü·ÃµÈ À¯ÀÇÇÑ º¯À̼ºÀÌ °üÂûµÇ¾ú´Ù. ÇÏÁö¸¸, Ç¥ÇöÇüÀû º¯À̼º¿¡´Â ½ÇÁúÀû Â÷ÀÌ´Â ÀÎÁ¤µÇÁö ¾Ê¾Æ Æ÷ÀåÁ¶°Ç¿¡¼­ ÃÖÃʹ߾ƽñâ´Â Á¾°£ ¶Ç´Â Áö¿ªÁ¾¿¡ °ü°è¾øÀÌ µ¿ÀÏÇÏ¿´´Ù. 4°¡ÁöÀÇ Á־߰£ ¿Âµµ Â÷ÀÌ(25/$25^{circ}C$, 27.5S/22.5$^{circ}C$, 30/2$0^{circ}C$, 15/35$^{circ}C$)·Î Á¶ÀýµÈ »ýÀ°»ó Á¶°ÇÀÇ ½ÇÇè¿¡¼­ °¢ ¹Ù·©ÀÌ Á¾ÀÇ ¹ß¾Æ¼Ò¿äÀϼö¿¡ °üÇÑ Á¾°£ ¶Ç´Â Á¾³»ÀÇ º¯À̼ºÀº ¾ø¾ú´Ù. µû¶ó¼­, Àܵð¹ç¿¡¼­ È¿À²ÀûÀÎ ¹Ù·©ÀÌ ¹æÁ¦¸¦ À§ÇØ Æ¯Á¤Áö¿ª¿¡¼­ ÃÖÃÊ ¹ß¾Æ½Ã±â¿¡ °ü·ÃµÈ ¿¹Ãø¸ðµ¨Àº Ÿ Áö¿ª¿¡µµ µ¿ÀÏÇÏ°Ô Àû¿ë °¡´ÉÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.
A field trial was initiated to examine the range of inter- and intraspecific variations in morphological and phenological traits with five different accessions of smooth and large crabgrass. In addition, a controlled environment study was conducted to determine the phenotypic plasticity among the accessions of both species in response to 4 daily tempera-ture differentials. In the field experiment, significant inter- and intraspecific variations of smooth and large crabgrass were observed in morphological traits such as leaf length and width. However, most phenological traits were not substantially different between the species and among the accessions of each species. The first seedling emerged at the same time, requiring 9~ 10 days, regardless of the accessions and species. In a controlled environment study, all accessions of each species responded similarly to the 4 temperature differentials in seedling emergence, indicating seedling emergence was not a plastic trait. These results suggest that predicting crabgrass seedling emergence could be independent of geographical regions in the US.
 
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Carbgrass;phenotypic plasticity;prediction model;seedling emergence;tiller development;temperature differentials;
 
Çѱ¹ÀܵðÇÐȸÁö / v.15, no.3, 2001³â, pp.127-136
Çѱ¹ÀܵðÇÐȸ
ISSN : 1229-3253
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111921145937)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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