JOURNAL OF BEIJ ING FORESTRY UNIVERSITY

30 4 2008 7 JOURNAL OF BEIJ ING FORESTRY UNIVERSITY Vol. 30, No. 4 Jul., 2008 1,2 1 1 (1 2 ) : 3,,7129,; 20124, ;75100, (10 ) (1 ),Logistic ( LT 50 ), - 7193-5103 - 2119, - 19110-6160 - 2194,,,, : ; ; ; :S71813 :A :1000221522 (2008) 042200772205 RUAN Zhi2ping 1,2 ; XIANG Ping 1 ; LI Zhen2ji 1. Cold tolerance of Butia capitata, Acoelorrhaphe wrightii and Elaeis guineensis. Journal of Beijing Forestry University (2008) 30 (4) 772281 [ Ch, 22 ref. ] 1 College of Life Sciences,Xiamen University,Fujian Province,361005,P. R. China ; 2 Xiamen Botanical Garden,Fujian Province,361005,P. R. China. Cold tolerances of Butia capitata, Acoelorrhaphe wrightii and Elaeis guineensis were studied during the winter (October of 2005 to January of 2006) in Xiamen City by cold injury index,electrolyte leakage and semi2 lethal low temperature. The results show that the cold injury indices ( CI) of B. capitata, A. wrightii and E. guineensis were 7129,20124 and 75100,respectively. The electrolyte leakage of leaves was measured in October and January under different temperatures,and the semi2lethal low temperature (L T 50 ) of leaves was assayed in different sampling periods by Logistic equation. The L T 50 of B. capitata, A. wrightii and E. guineensis were - 7193, - 5103 and - 2119 in October, and were - 19110, - 6160 and - 2194 in January,respectively. The results indicate that the sequence of the cold tolerance is as follows : B. capitata > A. wrightii > E. guineensis. Key words palm ; electrolyte leakage ; semi2lethal low temperature ; cold resistance (Palmae),,,, [1 ],,, l6 85, 818 % [2 ],,, [3225 ],, [6 ], 1991 1992,1992 1993 1999 2000,,,, [7 ],,, :2007210210 http :ΠΠwww. bjfujournal. cn,http :ΠΠjournal. bjfu. edu. cn : :,, : :0592228630072 Email : rzp20012001 @yahoo. com. cn : 361005 :, : : 0592222181431 Email :zhenjil @163. com :

78 30 [82217 ], 3,,,,, 1 111,24 24 N,118 04 E,,1916, 1 53313 mm 2005 10 2006 1, 1 1 2005 10 2006 1 TABLE 1 Average and lowest temperatures of Xiamen City from October 2005 to January 2006 2005210 1811 1016 2005211 1512 510 2005212 1214 212 2006201 1013-215 112 5 ( Butia capitata Becc. ) ( Acoelorrhaphe wrightii ( Griseb. & H. Wendl. ) H. Wendl. ex Becc. ) ( Elaeis guineensis Jacq. ),,,, 10 g,, 113 11311 2006 1 5,,, 30,, 5 (2), CI CI = n iw i Π( NW max ) (1), n i, W i, N, W max 11312 : [18 ], 1),, 2 TABLE 2 Evaluation standard of cold injury to palm in Xiamen City 0 015 1 1 2 2 3 4,, 1Π3,,,,, 2Π3,,,, ( ), 4 8,,( 3 cm ) 6, A1 A2 A3 A4 A5 A6, 3 g, 3, 2) Polyscience 9610,- 2-4 - 6-8 - 10-12 - 14 115 h 3) 4 30 min, 8 ml, 4 h,, DS222 1 ( C 1 ) ; 10 min, 24 h, 2 ( C 2 ),,3 Y = ( C 1 - C w )Π( C 2 - C w ) (2), Y ( %), C 1 C 2 C w 1 2 (cmπs) 4) Logistic, Y = KΠ(1 + ae - bt ) (3), t ( ), K a b 114 SPSS1115, Logistic, 2 211 3,,3,,,1

4 : 79 ( 617 %) 2 ( 313 %),,,7129,, 2, 4617 %,20124,,, 3 4, 5010 %, 75100,, 3 3 TABLE 3 Comparison of cold injury grades to three palm species leaves in Xiamen City 0 1 2 3 4 Π % Π % Π % Π % Π % 27 9010 2 617 1 313 0 0 0 0 7129 3 1010 11 3617 14 4617 2 617 0 0 20124 0 0 0 010 0 010 15 5010 15 5010 75100 212 (2005 10 ) 4,, S (1), - 8, - 8-10, - 10, 56175 % ; - 2-4,- 4, 53143 % ; - 2,45110 % Logistic, (LT 50 ), - 7193 ; - 5103 ; - 2119 (6), > > 4 2005 10 3 % TABLE 4 Changes of electrolyte leakages of three palm species leaves under different temperatures in October 2005 Π - 2-4 - 6-8 - 10-12 - 14-16 12110 14125 19112 25190 56175 61175 66154 72188 18116 53143 60155 68160 74145 78150 82114 86141 45110 56142 64120 83152 79166 81147 86191 88123 :3 5 1 10 3 FIGURE 1 Changes of electrolyte leakages of B. capitata,a. wrightii and E. guineensis in October 2005 213 (2006 1 ) 3 5,2, - 2-14, - 14-16, - 14, 46126 %, - 16 60117 % ; - 6-8,- 8,50160 % ; - 2-4, - 4,50 % Logistic, S ( L T 50 ), L T 50-19110 ; L T 50-6160 ; L T 50-2194 (6) > > 5 2006 1 3 % TABLE 5 Changes of electrolyte leakages of three palm species leaves under different temperatures in January 2006 Π - 2-4 - 6-8 - 10-12 - 14-16 10125 13112 17145 21176 30135 38128 46126 60117 16172 20133 24155 50160 62145 68150 72114 76141 32166 54180 65175 70178 76181 79190 82145 85168

80 30 2 1 FIGURE 2 Changes of electrolyte leakages of B. capitata, A. wrightii and E. guineensis in January 214 S, 3 6 6 3 LT 50 TABLE 6 Relationships between electrolyte leakage and temperature and semi2lethal low temperature (LT 50 ) of three palm species Logistic LT 50 R 2 Y = 01752 6Π(1 + 181925e - 01372 x ) - 7193 01945 Y = 11536 6Π(1 + 191884e - 01157 x ) - 19110 01998 Y = 11278 2Π(1 + 11540 6e - 01086 x ) - 5103 01987 Y = 01780 9Π(1 + 111662e - 01372 x ) - 6160 01972 Y = 01912 7Π(1 + 11698e - 01241 x ) - 2119 01990 Y = 01863 5Π(1 + 21846e - 01356 x ) - 2194 01981,3 L T 50 L T 50,,, L T 50, 11117 ; L T 50-5103 - 6160, 1157, ; L T 50-2119,- 2194,,0175,,,,;, 3 L T 50 5174,L T 50 16116,,, 3 Lyons [19 ],,,,,,,,, 3 1893 1-1211,1977 1 31-1013, - 10,, - 10, 1 3,,,,,,,, 1 2 1016, - 117,- 4,, 215,,,, [20 ],3, [212222],,,, [14,16],,,,,,

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