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本文通过建立多元回归数学模型,对20个国内、外油用型向日葵(油葵)杂交种籽实主要经济性状,即容重、籽仁率、百粒重、含油率、产油量等,进行相关性分析研究。通径分析结果表明:容重(g/L)对籽实含油率的贡献值>籽仁率(%)>百粒重(g),容重、籽仁率与籽实含油率的高低均呈极显著正相关(r_(3Y)=0.588 8、r_(2Y)=0.683 3);百粒重与籽实含油率呈负相关(r_(1Y)=0.002 52)。而公顷产油量(产量×含油率)是评价油葵杂交种品质优劣的重要指标,相关通径分析表明,油葵籽实含油率(%)与公顷产油量呈极显著正相关(r_(y1)=0.6180)。因此,在油葵“三系”配套杂交品种选育过程中,除兼顾其他综合农艺性状外,籽粒经济性状中容重、籽仁率、百粒重等是影响油葵品质(含油率)的重要经济指标。
In this paper, the mathematical model of multiple regression was used to analyze the main economic traits of hybrid seeds of 20 domestic and foreign oil sunflower (sunflower), ie, bulk density, seed kernel rate, 100 kernel weight, oil content, oil yield and so on Sexual Analysis Research. The results of path analysis showed that the values of bulk density (g / L) contribution to seed oil content> seed kernel rate (%)> 100 g weight, bulk density, seed kernel ratio and seed oil content were significantly positive (R_ (3Y) = 0.588 8, r_ (2Y) = 0.683 3). The negative correlation between the grain weight and seed oil content was found (r 1Y = 0.002 52). However, the yield per hectare (yield × oil content) is an important index to evaluate the quality of hybrids. The related path analysis shows that there is a significant positive correlation between oil content (%) and oil yield per hectare (r_ (y1) = 0.6180). Therefore, in the process of breeding sunflower “three lines ” matching hybrid varieties, in addition to taking into account other comprehensive agronomic traits, kernel weight, seed kernel weight, grain weight and so on are the factors that affect the quality of sunflower (oil content) Important economic indicators.