通过块茎生化特征预测马铃薯植株长势，效果因品种而异。
Predicting potato plant vigor from the seed tuber properties
- 基于块茎代谢物数据建立品种特异性预测模型。
- 同一品系不同地块间植株长势相关性达73%-90%。
- 部分品种的长势变异可被块茎化学成分解释高达30%。
马铃薯植株活力（以指数生长期结束时冠层面积衡量）取决于种薯来源及其生理状态。在三个试验田、三年时间内对六个马铃薯品种的实验表明，同一种薯批次在不同田块中生长的植株活力相关性为73%至90%。然而，当种薯和幼苗遭遇环境胁迫时，这种相关性消失或转为负值。对种薯生化特性与植株活力关系的综合研究发现，50%至70%的植株活力变异可由种薯数据解释，但活力主要受马铃薯基因型主导。个体预测因子分析显示，不同基因型中增强活力的种薯成分存在差异。针对特定品种建立的模型表明，某些品种中高达30%的活力变异可由种薯生化组成预测，而另一些品种则关联较弱。
原文摘要 · Abstract (English)
The vigor of potato plants, defined as the canopy area at the end of the exponential growth stage, depends on the origin and physiological state of the seed tuber. Experiments carried out with six potato varieties in three test fields over three years show that there is a 73%-90% correlation in the vigor of the plants from the same seedlot grown in different test fields. However, these correlations are not always observed on the level of individual varieties and vanish or become negative when the seed tubers and young plants experience environmental stress. A comprehensive study of the association between the vigor and the seed tuber biochemistry has revealed that, while 50%-70% of the variation in the plant vigor is explained by the tuber data, the vigor is dominated by the potato genotype. Analysis of individual predictors, such as the abundance of a particular metabolite, indicates that the vigor enhancing properties of the seed tubers differ between genotypes. Variety-specific models show that, for some varieties, up to 30% of the vigor variation within the variety is explained by and can be predicted from the tuber biochemistry, whereas, for other varieties, the association between the tuber composition and the vigor is much weaker.
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