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[目的]测定高产直立型川麦冬植株叶片数量、块根产量及块根多糖含量,探讨性状—产量—品质的相关性及其变化规律。[方法]在川麦冬主产区应用原位动态法采集供试品,测定块根产量,硫酸-苯酚比色法测定麦冬块根多糖含量,采用t检验和相关回归法,分析麦冬植株叶片数、块根重量及多糖含量之间的规律。[结果]川麦冬植株平均叶片数69.70±15.3片、块根生物学产量(29.59±11.24)g、麦冬多糖含量(42.72±4.42)%,其回归方程为:z=-1789.06-112.53x+166.19y-3.610x~2-6.05y~2+9.11xy-0.19xy~2+0.16x~2y-0.04x~3+0.08y~3,表明它们之间呈极显著相关性(P<0.001…)。[结论]川麦冬为优质高产的麦冬资源类型,植株叶片对麦冬光合产物积累和次生代谢产物的形成具有显著的影响,培育植株良好的叶片光合生态构型是麦冬优质高产的关键。
[Objective] The research aimed to determine the leaf number, root tuber yield and root polysaccharide content in high-yield Eupatorium odoratum plantation and to explore the relativity and its variation of trait-yield-quality. [Method] The in situ dynamic method was used to collect the tested samples in the main producing area of Chuanmai winter. The tuberous root yield was determined. The content of polysaccharides in root of Radix Ophiopogonis was determined by sulfuric acid - phenol colorimetry. The t - test and correlation regression method were used to analyze the leaf content of Ophiopogon japonicus Number, root weight and polysaccharide content between the law. [Result] The average number of leaves of Radix Chuanmai was 69.70 ± 15.3, the yield of tuberous roots was (29.59 ± 11.24) g, the content of polysaccharides was (42.72 ± 4.42)%, the regression equation was z = -1789.06-112.53x + 166.19y-3.610x ~ 2-6.05y ~ 2 + 9.11xy ~ 0.19xy ~ 2 + 0.16x ~ 2y ~ 0.04x ~ 3 + 0.08y ~ 3, indicating that they were significantly correlated (P <0.001 ... ). [Conclusion] Chuanmaidong was a good and high yield type of Ophiopogon japonicus. The leaf of plant had a significant effect on the accumulation of photosynthate and the formation of secondary metabolites, and the good photosynthetic ecotype of the plant was the high quality and high yield of Ophiopogon japonicus The essential.