Functional morphology and evolution of stem succulence in cacti

被引：17
作者：
Altesor, A
Ezcurra, E
机构：
[1] Univ Republica, Fac Ciencias, Dept Ecol, Montevideo 11400, Uruguay
[2] San Diego Nat Hist Museum, San Diego, CA 92101 USA
[3] INE, Mexico City, DF, Mexico
来源：
JOURNAL OF ARID ENVIRONMENTS | 2003年 / 53卷 / 04期
关键词：
biomechanical constraints; cactaceae; phyllotaxis;
D O I：
10.1006/jare.2002.1059
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
We explored, using a mathematical model, the changes in areole arrangement that have occurred during the evolution of stem succulence in different cactus life-forms. The study was based on field data. The model used two parameters: (a) areole density in the stem and (b) the divergence angle between successive areoles. The stem morphology in different cactus subfamilies is correlated to changes in one or both parameters. Gradual changes in stem compaction and in the divergence angle can explain the apparently complex evolutionary transition from primitive woody and leafy plants to the more evolved, stem-succulent morphologies of cacti. (C) 2002 Elsevier Science Ltd.
引用
收藏
页码：557 / 567
页数：11
相关论文
共 27 条
[1]  
ALTESOR A, 1994, BOT J LINN SOC, V114, P283, DOI 10.1111/j.1095-8339.1994.tb01937.x
[2]  
ALTESOR A, 1992, ACTA OECOL, V13, P777
[3]  
[Anonymous], 1977, NATL PARK SERVICE SC
[4]  
[Anonymous], 1962, ANATOMY SEED PLANTS
[5]  
Bravo-Hollis H, 1978, CACTACEAS MEXICO, V1
[6]  
CARLQUIST S, 1962, PHYTOMORPHOLOGY, V12, P29
[7]  
CHURCH MA, 1920, INTERPRETATION PHENO
[8]   THE WAR OF THE WHORLS - GENETIC INTERACTIONS CONTROLLING FLOWER DEVELOPMENT [J].
COEN, ES ;
MEYEROWITZ, EM .
NATURE, 1991, 353 (6339) :31-37
[9]  
DIAZMAEDA PG, 1991, THESIS U NACL AUTONO
[10]   PHYLLOTAXIS AS A PHYSICAL SELF-ORGANIZED GROWTH-PROCESS [J].
DOUADY, S ;
COUDER, Y .
PHYSICAL REVIEW LETTERS, 1992, 68 (13) :2098-2101
123