不同年限川贝母生物量及异速生长

Study on the biomass and allometry of Fritillaria cirrhosa of different ages

对不同年限的川贝母(Fritillaria cirrhosa)各器官称重,比较不同栽培年限川贝母的各器官性状及生物量占比,并进行正态性检验和方差分析,利用标准化主轴回归分析探明川贝母的生物量积累及其异速生长规律。结果表明,不同年限川贝母各器官生物量大小表现为鳞茎>叶>地下茎>根;川贝母鳞茎及叶片生物量在第4年增长最多,根系及地下茎生物量在第5年增长最多;川贝母地上部分与地下部分生物量均随生长年限的增长而不断增大,且地上部分各器官生物量间均差异显著(P<0.05)。整个生长过程中,川贝母各器官生物量占总生物量的比例随年限增长而有所变化,且各器官生物量与总生物量之间均正相关。除生长第5年川贝母花和果的生物量与总生物量为等速生长模式外,其余年限川贝母各器官生物量与总生物量皆为异速生长模式,为人工生产川贝母提供理论依据。

In this study,the organs of Fritillaria cirrhosa cultivated for different growth years were weighed,their characteristics and biomass proportions were compared,and normality tests and variance analysis were conducted.The regularity of biomass accumulation and allometric growth of F.cirrhosa was studied using Standardized Major Axis(SMA)regression analysis.We found that the biomass values of the organs of F.cirrhosa at different ages followed the order:bulb>leaf>underground stem>root.The biomass of bulbs and leaves increased the most during the fourth year,and the biomass of roots and underground stems increased the most during the fifth year.The biomass of the above-and belowground parts of F.cirrhosa increased with an increase in growing years,and the biomass of the aboveground parts was significantly different(P<0.05).During plant growth,the ratio of the biomass of each organ to the total plant biomass changed,and there was a positive correlation between the biomass of each organ and the total biomass.Except for the five-year-old flower and fruit biomass and total biomass,the biomass and total biomass of all organs of F.cirrhosa in the other years showed allometric growth patterns,which provides a theoretical basis for their artificial production.