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对草坪型多年生黑麦草6个农艺性状与种子产量进行了相关、回归和通径分析。结果表明,种子产量与株高相关不显著,而与另5个性状均呈显著正相关,相关系数大小依次为单株穗数>每穗小穗数>绿叶干重>穗长>穗粒数>株高。有4个性状对单株种子产量贡献较大,其大小依次为单株穗数>每穗小穗数>绿叶干重>株高。株高的效应是负值。
Correlation, regression and path analysis were conducted on 6 agronomic traits and seed yield of turf type perennial ryegrass. The results showed that there was no significant correlation between seed yield and plant height, but significant positive correlation with other five traits. The correlation coefficients were as follows: panicle per plant> spikelet per panicle> dry weight of leaf> panicle length> > Plant height. Four traits contributed a lot to the seed yield per plant, and the order of the traits was per panicle> spikelet per panicle> green leaf dry weight> plant height. The effect of plant height is negative.