Studies on the Models for Yield Structure of Super-high-yielding Winter Wheat Cultivars in Huang-huai Wheat Region

doi:10.3321/j.issn:1000-7091.2001.04.001

Abstract

Abstract: Correlation and regression analysis were used to study the yield st ructure of super-highyield winter wheat cultivars in Huang-huai winter wheat region and their interrelations. The results showed that for multiple-spike varieties the number of spikes per hectare, the number of kernels per spike and 1000-kernelcs weight should be harmonized to achieve super-high-y ielding, the optimum yield structure was 680.64×10⁴ spikes/ha, 38.16 kernels/spike, 40.34g/1000-kernel and that for big-spike varieties, the key is to increase the number of kernels per spike and 1000-kernelcs weight, the optimum yield structure was 467.6×10⁴ spikes/ha, 49.73 kernels/ spike, 49.38 g/1000-kernels. Finally, breeding super-hig h-yielding wheat cultivars was also discussed.

Key words: Wheat, Super-high-yield, Yield, Yield structure, Variety breeding

CLC Number:

CUI Dangqun, ZHANG Juan, WEN Jie, WANG Junzhen. Studies on the Models for Yield Structure of Super-high-yielding Winter Wheat Cultivars in Huang-huai Wheat Region[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2001, 16(4): 1-5. doi: 10.3321/j.issn:1000-7091.2001.04.001.

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