基于产量相关性状综合评价晚播甜菜品种的适应性

Comprehensive evaluation of adaptability of late sowing sugar-beet varieties based on yield correlation

【目的】研究甜菜在新疆南疆特定生态区的生长发育特性,为新疆南疆晚播甜菜提高产量及含糖量提供参考。【方法】以新疆喀什地区引进的14个甜菜品种为材料,测定甜菜生物量积累分配、收获株数、块根单重、产量及产糖量等11个产量相关性状指标,分析晚播甜菜变异系数、相关性、主成分、隶属函数及划分聚类,综合评价晚播甜菜品种适应性。【结果】不同甜菜品种适应性不同,11个产量相关性状转化为3个主成分,分别为生物量因子、块根产量因子及产糖量因子,其累计方差贡献率为89.886%。14个甜菜品种聚类划分为3类,其中品种KWS1130地上部和地下部生物量、根冠比及单根重等产量相关性的适应性和稳定性最强,综合排名第一。【结论】甜菜品种KWS1130适宜新疆南疆晚播种植,且能保证较高的产量和产糖量。

【Objective】To study the growth and development characteristics of sugar-beets in specific ecological areas in southern Xinjiang which might be of certain theoretical significance for the late planting of sugar-beets and the improvement of yield and sugar content in the southern Xinjiang region.【Methods】In this study,14 sugar-beet varieties introduced from Kashgar region of southern Xinjiang were used as materials to comprehensively evaluate the adaptability of late sowing sugar-beet varieties through 11 yield related traits such as biomass accumulation and distribution,number of harvested plants,root unit weight,yield,and sugar yield.The methods of coefficient of variation,correlation,principal component analysis,membership function,and cluster analysis were used to evaluate the adaptability of late sown sugar-beet varieties.【Results】Different sugar-beet varieties had different adaptability.Through principal component analysis,11 yield related traits were transformed into 3 principal components,namely,biomass factor,root tuber yield factor,and sugar yield factor.The cumulative variance contribution rate was 89.886%.14 sugar-beet varieties were divided into 3 categories,among which KWS1130 had the strongest adaptability and stability in yield correlation traits such as aboveground and underground biomass allocation traits,root crown ratio traits,and single root weight,ranking first in comprehensive rankings,and belonged to a strong adaptability category.【Conclusion】Sugar-beet variety KWS1130 is suitable for late planting of southern Xinjiang,and can ensure high yield and sugar production.