Briggs Michelle A, Schultz Jack C
Pesticide Research Laboratory, Pennsylvania State University, 16802, University Park, PA, USA.
Oecologia. 1990 May;83(1):32-37. doi: 10.1007/BF00324630.
Ecological trade-offs between growth, reproduction and both condensed tannins and cyanogenic glycosides were examined in Lotus corniculatus by correlating shoot (leaves and stem) size and reproductive output with chemical concentrations. We found that cyanide concentration was not related to shoot size, but that condensed tannin concentrations were positively correlated with shoot size; larger plants contained higher tannin concentrations. Both tannin and cyanide concentrations were depressed when plants produced fruits. Defense costs change as plants mature and begin to reproduce. These trade-offs indicate that cost of defense chemical production cannot be predicted merely on the basis of molecular size, composition or concentration.
通过将莲座状叶（叶子和茎）的大小以及繁殖产量与化学物质浓度相关联，研究了百脉根在生长、繁殖与缩合单宁和生氰糖苷之间的生态权衡。我们发现氰化物浓度与莲座状叶大小无关，但缩合单宁浓度与莲座状叶大小呈正相关；较大的植株含有更高的单宁浓度。当植株结果时，单宁和氰化物浓度均降低。随着植株成熟并开始繁殖，防御成本会发生变化。这些权衡表明，不能仅仅根据分子大小、组成或浓度来预测防御性化学物质的生产成本。
