CAJ | 학술논문

以青藏高原高寒草甸中三种同域分布的喉毛花为研究对象，通过比较三个种的植株性状和繁殖分配，探讨繁殖分配的种间差异及其与植株个体大小的关系。结果表明：(1)三个种的植株高度、顶花大小和单株花数目、繁殖分配均存在种间差异，这可能与其各自的交配系统和具体的生境以及相应的生活史对策有关；(2)在三种喉毛花中，投入到营养器官和繁殖器官的绝对资源量均呈显著正相关，未检测到植株生长和繁殖间的权衡关系；(3)三个种的个体大小与繁殖器官生物量均呈显著正相关，而与繁殖分配均呈显著负相关，这表明个体越大，繁殖投入越高，而繁殖分配越低，与以往研究结果一致，这可能是由于繁殖分配与个体大小之间存在异速关系。
이청장고원고한초전중삼충동역분포적후모화위연구대상，통과비교삼개충적식주성상화번식분배，탐토번식분배적충간차이급기여식주개체대소적관계。결과표명：(1)삼개충적식주고도、정화대소화단주화수목、번식분배균존재충간차이，저가능여기각자적교배계통화구체적생경이급상응적생활사대책유관；(2)재삼충후모화중，투입도영양기관화번식기관적절대자원량균정현저정상관，미검측도식주생장화번식간적권형관계；(3)삼개충적개체대소여번식기관생물량균정현저정상관，이여번식분배균정현저부상관，저표명개체월대，번식투입월고，이번식분배월저，여이왕연구결과일치，저가능시유우번식분배여개체대소지간존재이속관계。
Resource allocation strategy is central to plant life-history theory and thus receive extensive attention of ecologists and evolutionists.However,there are few research about the resource allocation strategies of sympatric spe-cies of the same genus.We studied the plant traits and reproductive allocation of three sympatric Comastoma species which are all alpine annual herbs of the Qinghai-Tibet Plateau.Our results were as follows:(1)there were significant differences in plant height,flower number every plant,top flower size and reproductive allocation among three species due to their different mating systems,habitats and life-history strategies;(2 )in all three species,there was positive relationship between resource allocation of vegetative organs and reproductive organs,and no trade-off between vege-tative growth and reproduction was found;(3)the reproductive investment increased but the proportion of reproduc-tion(reproductive allocation)decreased with increased individual size,which was consistent with the previous conclu-sions,indicating size-dependency of reproductive allocation and this might be resultant from the allometric relationship between reproductive allocation and individual size.