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以8个抗列当食用型向日葵品种(系)为材料,运用多元相关分析及通径分析法,对向日葵经济特性、生理特性、子粒特性与产量(CL)的相关性进行了分析,在此基础上构建抗列当向日葵产量预测模型,并量化模型中各性状指标对产量的直接和间接影响效应。结果表明,向日葵产量同时受多因素影响,但不同抗列当向日葵品种(系)产量的主导影响因子有所不同;各植物学性状对产量的影响不仅表现在本身具有的直接作用,同时还表现在通过其他性质体现出的强烈间接影响效应;剔除种间因素影响后,单盘粒重(DPLZ)、结实率(JSL)、百粒重(BLZ)、株高(ZG)、粒宽(LK)及盘径(PJ)等6个植株性状成为抗列当向日葵产量模型Com-MODEL(CL=-6.023+0.014DPLZ+0.06JSL+0.328BLZ+0.014ZG-4.571LK+0.156PJ)的主要变量,该模型能解释86.9%的CL变异;其中粒宽、百粒重及盘径对CL的影响都达到了极显著(P<0.001)或显著水平(P<0.01);各变量对产量预测模型R2的总贡献计算结果显示,粒宽、百粒重及盘径通过直接作用和间接作用成为影响向日葵产量变化的3个主导因素,共同决定了CL的大部分变异;其次是单盘粒重及结实率的影响;株高对CL的影响很微弱。
Eight anti-tuber-edible sunflower cultivars (lines) were used as materials to analyze the economic, physiological characteristics, grain characteristics and yield (CL) of sunflower by using multivariate correlation analysis and path analysis. On the basis of this, the yield forecast model of sunflower was constructed, and the direct and indirect effects of each trait index on the yield were quantified. The results showed that the yield of sunflower was influenced by many factors at the same time. However, the main influencing factors of the yield of different sunflower cultivars were different. The influence of each botany on yield was not only reflected by its own direct effect, After the influence of interspecies factors, DPLZ, JSL, BLZ, ZG, LK (LK) were significantly affected by other properties. ) And PJ were the main variables of anti-sunflower yield model Com-MODEL (CL = -6.023 + 0.014 DPLZ + 0.06 JSL + 0.328 BLZ + 0.014 ZG-4.571 LK + 0.156 PJ) The model can explain 86.9% of the CL variation. The effects of grain width, grain weight and disk diameter on CL were all significant (P <0.001) or significant (P <0.01) The results of total contribution calculation showed that grain width, grain weight and disk diameter became the three dominant factors affecting the yield of sunflower through direct and indirect effects, which together determine most of the variation of CL; followed by single grain weight and seed setting The impact of plant height on CL is weak.