[滇龙胆草农艺性状的相关性及通径分析]
[Correlation and path analysis on agronomic traits of Gentiana rigescens].
作者信息
Shen Tao, Zhang Jinyu, Yang Weize, Yang Meiquan, Zhao Zhenling, Zhang Zhihui, Chen Xiuhua, Jin Hang, Wang Yuehua
机构信息
Institute of Medicinal Plant, Yunnan Academy of Agricultural Sciences, Kunming 650223, China.
出版信息
Zhongguo Zhong Yao Za Zhi. 2011 Jun;36(12):1568-71.
OBJECTIVE
The interrelation of yield and agronomic traits of Gentiana rigescens was studied for the germplasm and breeding variety of this species.
METHOD
Twelve agronomic traits, root diameter, root length, root number, root biomass, stem diameter, plant height, the first branch number, leaf length, leaf width, leaf length/leaf width ratio, calyx length, and calyx number of G. rigescens from 26 wild populations in Yunnan were determined for correlation analysis, multiple stepwise regression analysis and path analysis.
RESULT
Correlation analysis showed that there were significantly positive correlation between the traits of aboveground part and the length, diameter, number, and biomass of the root. Multiple stepwise regression analysis showed that length, width, and number of root, plant height, the first branch number, and the calyx number were the main factors that affected the root biomass. Path analysis showed that the diameter, length, and number of the root, the stem height, and the first branch number had a direct positive effect on the root biomass.
CONCLUSION
The traits, such as high and strong stem, high number of first branch number and shrubby shape could be selected for the breeding and high yielding of G. rigescens.
目的
研究滇龙胆产量与农艺性状的相互关系，为该物种的种质资源及育种品种提供依据。
方法
测定了云南26个野生居群滇龙胆的12个农艺性状，包括根直径、根长度、根数、根生物量、茎直径、株高、一级分枝数、叶长、叶宽、叶长宽比、花萼长度和花萼数，并进行相关性分析、多元逐步回归分析和通径分析。
结果
相关性分析表明，地上部分性状与根的长度、直径、数量和生物量之间存在显著正相关。多元逐步回归分析表明，根的长度、宽度和数量、株高、一级分枝数和花萼数是影响根生物量的主要因素。通径分析表明，根的直径、长度和数量、茎高和一级分枝数对根生物量有直接正向影响。
结论
在滇龙胆的育种和高产栽培中，可选择茎高且粗壮、一级分枝数多、呈灌木状等性状。
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