CAJ | 학술논문

在野外用样方法,选取60株钻形紫菀(Aster subulatus Michx.)开花植株,进行根、茎、叶及花等构件的生物量及其物质分配关系的研究.结果表明:钻形紫菀开花期构件生物量为茎>花>根>叶,其变异系数分别为57.15%、64.66%、57.65%和55.2%,具有较大表型可塑性;在各构件物质分配变异系数中,花生物量分配的变异系数相对较大,说明其调节生殖分配的能力较强;植株高度与各构件生物量呈显著的正相关性,随着各构件生物量的增加均呈幂函数形式增加;花生物量分配与总生物量呈显著的正相关性,其余构件生物量分配均与总生物量及花生物量分配呈负相关性,物质分配由营养构件、支持构件、光合构件向生殖构件转移.反映出钻形紫菀具有自我调节生长力的分配策略,对异质环境具有较强适应能力.
재야외용양방법,선취60주찬형자완(Aster subulatus Michx.)개화식주,진행근、경、협급화등구건적생물량급기물질분배관계적연구.결과표명:찬형자완개화기구건생물량위경>화>근>협,기변이계수분별위57.15%、64.66%、57.65%화55.2%,구유교대표형가소성;재각구건물질분배변이계수중,화생물량분배적변이계수상대교대,설명기조절생식분배적능력교강;식주고도여각구건생물량정현저적정상관성,수착각구건생물량적증가균정멱함수형식증가;화생물량분배여총생물량정현저적정상관성,기여구건생물량분배균여총생물량급화생물량분배정부상관성,물질분배유영양구건、지지구건、광합구건향생식구건전이.반영출찬형자완구유자아조절생장력적분배책략,대이질배경구유교강괄응능력.
The biomass of root, stem, leaf and flower, as well as the relationship of biomass allocation were studied from 60 flowering plants of Aster subulatus Michx. in the field. The results showed that the module biomass of A. subulatus was decreased in the order of stem > flower > root > leaf at flowering stage. Their variation coefficient was 57.15%, 64.66%, 57.65%, and 55.2%, respectively, which exhibited high phenotypic plasticity. The variation coefficient of biomass ratio was higher in flower than in other organs, which showed that this weed had high ability to adjusting reproduction allocation. Plant height had significant positive correlation with each module biomass and increased in the power function with the latter increment. Biomass allocation of flower had significant positive correlation with total biomass, but did not that of other organs. The biomass allocation was transferred from nutrition module, supporting module and photosynthesis module to reproduction module. In summary, A. subulatus had better assignment strategy for resource and stronger adaptive ability to heterogeneous environment.