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通过两年10个甜菜品种(系)和杂交种的几个主要数量性状间在型相关和遗传相关以及块根糖产量与其它性状的通径分析结果表明,各性状间表型相关与遗传相关的趋势是一致的,而且往往遗传相关大于表型相关。糖产量与块根产量呈极显的正相关(r_6,y=0.9778),与根颈直径和根体长的相关也比较大。块根产量和含糖率对糖产量的直接效应最大。虽然根颈直径和根体长与糖产量的遗传相关达极显著水平,但对糖产量的直接效应较小,这是由于它们是通过块根产量的间接效应对糖产量起作用。
The results of path analysis of type-related and hereditary-related and sugar yield and other traits in 10 major sugar beet varieties (lines) and hybrids in two years showed that phenotypic and genetic correlations among the traits The trends are consistent and often more genetically related than phenotype. Sugar production and root tuber yield showed a significant positive correlation (r_6, y = 0.9778), and the root neck diameter and root length of the correlation is relatively large. Root tuber yield and sugar content had the greatest direct effect on sugar production. Although the genetic correlation between root diameter and root length and sugar yield reached an extremely significant level, the direct effect on sugar yields was small because they contributed to sugar production through the indirect effects of root tuber yield.