雨久花种群开花期生殖株构件表型可塑性及生长分析  

Phenotype Plasticity of Modules and Growth Analysis of Reproductive Ramets in Monochoria korsakowii Population at the Flowering Stage

作　　者：刘彩云 王春强 张丽辉 张婉婷 时东方 Liu Caiyun;Wang Chunqiang;Zhang Lihui;Zhang Wanting;Shi Dongfang(College of Life Science,Changchun Normal University,Changchun,130032)

机构地区：[1]长春师范大学生命科学学院,长春130032

出　　处：《分子植物育种》2020年第7期2366-2370,共5页Molecular Plant Breeding

基　　金：国家自然科学基金项目(31570412);2018年国家级大学生创新创业训练计划项目(201810205011);吉林省省级产业自主创新能力专项项目;吉林省应用生态工程实验室自主创新能力建设(2018c002);吉林省教育厅“十三五”科学技术研究项目(吉教科合字(2016)第394号)共同资助。

摘　　要：采用大样本取样野外实地测定方法,对丹东地区雨久花种群生殖株的数量性状和生殖分配规律进行了分析。结果表明,在开花期,雨久花种群单个生殖株植株高度和花序长分别为(91.59±7.96)cm和(11.10±2.46)cm,花数为(68.47±18.52)个;生殖株生物量、根生物量、茎生物量、叶生物量和花序生物量分别为(9.97±4.13)g、(1.21±0.66)g、(6.36±2.91)g、(1.35±0.76)g和(1.05±0.51)g。花期雨久花种群生殖株变异系数以叶生物量最大,为56.41%;其次为根生物量54.14%;株高最小,为4.87%,各数量性状具有较大的表型可塑性。雨久花种群生殖株表型可塑性遵循着规律性,即随着株高的增加,花序长和花数量呈幂函数增加,根生物量和花序生物量呈直线增加;花序生物量与总生物量之间不存在相关的函数关系。By an alysis of large samples obtained in the fields,quantitative characters and regulations of reproductive allocation of reproductive ramets in Monochoria korsakowii population in the Dandong were studied.The results showed that the plant height and the inflorescence lengh of each reproductive of Monochoria korsakowii are(91.59±7.96)cm and(11.10±2.46)cm,the number of flowers are(68.47±18.52).The weight of each reproductive of M.korsakowii populationis,the root biomass,the stem biomass,the leaf biomass and the inflorescence biomass are(9.97±4.13)g,(1.21±0.66)g,(6.36±2.91)g,(1.35±0.76)g and(1.05±0.51)g,respectively.The quantitative characters of reproductive ramets in Monochoria korsakowii population had large phenotype plasticity.The coefficient of variation(CV)of leaf biomass was the largest(56.41%),while the CVs of root biomass and ramet height were the second higher with 54.14%and the smallest with 4.87%,respectively.The phenotype plasticity of reproductive ramets in Monochoria korsakowii population had a significant regularity.With the increase in ramet height,inflorescence lengh and the number of flowers showed a power function in crease;a power function in inflorescence lengh and the number of flowers;and a linear increase in root biomass and inflorescence biomass.There were two different regulations of phenotype plasticity of reproductive ramets in Monochoria korsakowii population at the flowering stage.The regularity of growth and reproductive allocation showed that the reproductive ramets of differen growth conditions had different allocation strategies for limited resources.

关 键 词：雨久花(Monochoria korsakowii) 表型可塑性 构件 生物量 

分 类 号：Q945[生物学—植物学]