长春花中长春质碱含量与农艺性状的分析

目的:对国内外长春花主栽品种的长春质碱含量和农艺性状进行了分析.方法:记录长春花盛花期的农艺性状,反相高效认相色谱仪测定长春质碱含量.结果:发现不同品种的长春质碱含量和农艺性状均存在很大差异,太平洋系列(Pacifica)品种Polka Dot(PPD)中长春质碱质量分数最高,达到叶片干重的3.79 mg·g~(-1);清凉系列(cooler)品种Pink(CP)中长春质碱质量分数最低,仅为叶片干重的0.9 mg·g~(-1).长春花中长春质碱含量与农艺性状之间存在一定程度的相关性.通径分析表明,长春花主要农艺性状中,节间距对长春质碱含量的正影响达到了显著水平(P<0.05),通径系数为1.473.结论:本研究对高含量长春质碱长春花引种和育种具有参考价值.

Analysis of catharanthine content and agronomic traits in Catharanthus roseus

Catharanthine content and agronomic traits in major Catharanthus roseus varieties were analyzed. It was found that there existed great difference in catharanthine content and agronomic traits among the varieties. Catharanthine content was the highest in variety Pacifica Polka Dot (PPD), reaching 3.79 mg&#8226;g-1 dry leaf weight, and the lowest in variety Cooler Pink (CP) with only 0.9 mg&#8226;g-1 dry leaf weight. Correlation existed in certain extent between catharanthine content and agronomic traits in C. roseus. Path analysis showed that among all the agronomic traits analyzed, internodal distance positively affected catharanthine content at significant level (P<0.05), with the path coefficient being 1.473. This study provides useful information for high-catharanthine content C. roseus introduction and breeding.