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四种短命植物若干生物学生态学特性的研究 被引量:42

THE ECOLOGY OF FOUR EPHEMERAL PLANTS
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摘要 卷果涩芥(MalcplmiascorpioideS)、四齿芥(Tetracmequadricornis)、长齿四齿芥(T.recurvata)和狭果鹤虱(Lappulasemiglobra)为新疆北部常见的四种短命植物。本文从种子生物学、发育节律、株形和植株寿命等方面研究它们与生存环境的协调与适应。 Malcolmia scorpioides,Tetracme quadricornis,T. recurvata and Lappula semiglabra are common ephemeral plants in the desert of the northern part of the Xinjiang Uilgur Autonomous Region,China. Their biological characteris-tics such as seed biology,morphalogy and developmental rhythm make themadapt to the temperate arid environment.(1)Low daily maximum temperature is necessary fot germination Cons-equently,the seeds avoid germinating in the hot and dry summmer,but ge rm-inate in the spring and autumn when there are suitable conditions for plants.(2)There are multiple ge rmination periods during spring and autumn,with only a portion of the seeds from the seed bank germinating each time.Therefore,these plants can survive and propagate after certain catastrophicevents,which can occur easily in the desert.(3)The shift from vegetative stage to reproductive stage is apparentlyaffected by temperature. The termination of the individual’s life span depen-ds on the soil .moistute contents.This might suggest that the growth of theseephemeral plants.Would resemble the annuals or winter annuals if the soilmoisture condition were appropriate for the growth of these plants in the sunmmer.(4)There are two groups of individuals in one population,namely spr-ing-germinated plants and autumn germinated plants.They differ from each othet in many aspects,such as morphology,biorhythm and reproduction rate. (5)with the active growth of plants,the spatial distributions of roots,assimilative organs and reproductive organs change with the changing envir-onment .
作者 潘伟斌 黄培
出处 《植物生态学报》 CAS CSCD 北大核心 1995年第1期85-91,共7页 Chinese Journal of Plant Ecology
基金 国家自然科学基金
关键词 植物 短命植物 种子生物学 适应 生态学特性 Ephemerals Seed morphology Adaptation Desert plants
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参考文献14

  • 1黄培--,生态学杂志,1991年,10卷,1期,6页
  • 2庄重,新疆八一农学院学报,1990年,13卷,1期,47页
  • 3关桂兰,干旱区研究,1988年,5卷,4期,1页
  • 4于喜凤,生物学杂志,1987年,3期
  • 5团体著者,中国植物志.33,1987年
  • 6张立运,植物生态学与地植物学丛刊,1985年,9卷,3期,213页
  • 7陈昌笃,植物生态学与地植物学丛刊,1983年,9卷,3期,213页
  • 8张立运,中国草原,1983年,2期
  • 9团体著者,中国高等植物图鉴.3,1983年
  • 10侯学煜,中国植被地理及优势植物化学成分,1982年

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