Rapid evaluation method for head smut at seedling stage of maize | 玉米丝黑穗病苗期快速鉴定方法
2009
Wang Zhenhua, Northeast Agricultural University, Harbin(China) | Liu Changhua, Northeast Agricultural University, Harbin(China) | Zhang Lin, Northeast Agricultural University, Harbin(China)
Chino. 本试验以已知抗性的51份玉米自交系为材料，研究了苗期接菌条件下可溶性糖含量与田间发病率的关系。结果表明，在15／25℃变温及1％土壤接菌条件下，幼苗可溶性糖含量与田间发病率存在极显著的正相关（r=0．7994）。采用逻辑斯蒂模型分别建立了抗、感自交系可溶性糖含量与田间发病率的一元曲线回归方程：Y=12．0848／E1＋exp（6．3725-0．3675z）]和y=91．0170／[1＋exp（18．4488～0．7888x）]，以此建立了以接菌幼苗可溶性糖含量为指标的抗性评价方法，并用于未知抗性种质资源的鉴定。[著者文摘]
Mostrar más [+] Menos [-]Inglés. The relationships between soluble sugar content and disease percentage were analyzed in 51 inbred lines at seedling stage with artificial inoculation. The significant positive correlation （r=0. 799 4） was found between the soluble sugar content and disease percentage under the conditions of 15/25℃ and 1% soil bacteria. Using logistic model, regression equations were established as followed： y= 12. 084 8/[1 ＋ exp （6. 372 5-0. 367 5x）] and y= 91. 017 0/[1＋exp （18. 448 8--0. 788 8x], which was used to evaluate the responses of maize inbred lines to head smut resistance.
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Este registro bibliográfico ha sido proporcionado por Institute of Agricultural Information, Chinese Academy of Agricultural Sciences