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[目的]测定高产直立型川麦冬植株叶片数量、块根产量以及块根黄酮、皂苷含量,探讨性状-产量-品质的相关性及其变化规律。[方法]在川麦冬主产区采集具有代表性的直立型麦冬植株,测定叶片数和块根产量,并以橙皮苷和麦冬皂苷D为对照品,用紫外分光光度法测定麦冬块根中总黄酮和总皂苷含量,采用t检验和相关回归法,用SPSS软件分析了麦冬植株叶片数、块根重量及黄酮、皂苷含量之间的关系。[结果]直立型川麦冬的植株平均叶片数X为(69.70±15.30)张/窝,块根生物学产量Y为(29.59±11.24)g/窝,黄酮含量Z1为(2.74±0.18)mg/g,皂苷含量Z2为(93.34±1.33)mg/g,其性状-产量-品质的回归方程为:Y=0.468X+10.272Z1+0.983Z2-122.995,Z1=0.002X+0.018Y+0.016Z2-0.619,Z2=0.246Y-0.103X+2.232Z1+87.094,表明它们之间具有极显著相关性(P<0.001***)。[结论]直立型川麦冬为优质高产的麦冬资源类型,植株叶片数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 study aimed to determine the correlation between leaf number, root tuber yield, flavonoid and saponin content, trait-yield-quality and its variation in upright high-yield Ophiopogon japonicus. [Method] The representative plants of Ophiopogon japonicus were collected in the main producing area of Chuanmaidong and the number of leaves and root tuber yield were determined. Hesperidin and Radix Ophiopogonis D were used as reference materials, and Ophiopogon japonicus was determined by UV spectrophotometry The contents of total flavonoids and total saponins in root tuber were determined by t test and regression analysis. The relationship between the number of leaves and the weight of roots and the contents of flavonoids and saponins were analyzed by SPSS software. [Result] The average number of leaves in upright plants was (69.70 ± 15.30) sheets / litter, the root yield was 29.59 ± 11.24 g / litter and the Z1 content was (2.74 ± 0.18) mg / g, the saponin content Z2 was (93.34 ± 1.33) mg / g, and the regression equation of trait-yield-quality was Y = 0.468X + 10.272Z1 + 0.983Z2-122.995, Z1 = 0.002X + 0.018Y + 0.016Z2- 0.619, Z2 = 0.246Y-0.103X + 2.232Z1 + 87.094, indicating a very significant correlation between them (P <0.001 ***). [Conclusion] Upright type Radix Ophiopogon japonicus was a good and high yield type of Ophiopogon japonicus. The number of plant leaves had a significant effect on the accumulation of photosynthate and the formation of secondary metabolites in Radix Ophiopogonis. The good photosynthetic eco-configuration of Radix Ophiopogon japonicus was Ophiopogon japonicus The key to high quality and high yield.