5个工业大麻品种（系）纤维产量及产量构成因素的相关性分析

以自主选育的5个工业大麻品种（系）为研究对象,采用随机区组试验,对纤维产量与产量构成因素进行相关和通径分析,分析参试品种（系）纤维产量、产量构成因素的变化及关系。结果表明,参试工业大麻品种（系）的单株纤维产量及产量构成因素差异显著;单株原茎重与单株纤维产量呈极显著相关,茎粗、单株干茎重、全麻率与单株纤维产量呈显著相关,相关系数的大小依次为单株原茎重（0.962）>全麻率（0.943）>茎粗（0.917）>单株干茎重（0.912）>株高（0.808）>干茎制成率（0.725）;单株纤维产量与单株原茎重、单株干茎重、全麻率、株高、干茎制成率的回归方程达显著水平,通径分析结果表明,对单株纤维产量直接贡献最大的是单株原茎重,其次是全麻率,而株高、单株干茎重、干茎制成率其对单株纤维产量的影响主要是通过影响单株原茎重和全麻率的间接作用而产生的。

Correlation Analysis of Fiber Yield and Yield Components in Five Industrial Hemp Varieties (Lines)

Five industrial hemp varieties (lines) were used as research objectives. The correlation and path analysis were carried out between fiber yield and yield components, and the changes occurred in relation to fiber yield and yield components were also analyzed. The results showed that there were significant differences in the fiber yield per plant and the yield components among industrial hemp varieties (lines). Stem weight per plant was extremely significantly correlated with fiber yield per plant. The stem diameter, dry stem weight per plant and total fiber rate were significantly correlated with fiber yield per plant. The order of correlation coefficients was stem weight per plant (0.962) > total fiber rate (0.943) > stem diameter (0.917) > dry stem weight per plant (0.912) > plant height (0.808) > pull rate of dry stem (0.725). The regression equation of fiber yield per plant with stem weight per plant, dry stem weight per plant, total fiber rate, plant height and pull rate of dry stem reached significant level, and path analysis showed that the most direct contribution to the fiber yield was the stem weight per plant followed by the total fiber rate, but the effects of plant height, dry stem weight per plant and pull rate of dry stem on fiber yield per plant were mainly caused by the indirect effects of stem weight per plant and total fiber rate.