Crops ›› 2025, Vol. 41 ›› Issue (5): 142-146.doi: 10.16035/j.issn.1001-7283.2025.05.019

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Breeding and Innovative Idea of Maize New Variety Xundan 168

Wang Changliang1(), Yan Lihui1(), Chang Jianzhi1(), Zhang Guohe1, Wang Jing1, Wang Fenxia1, Huang Lihua2()   

  1. 1 Hebi Academy of Agricultural Sciences, Hebi 458031, Henan, China
    2 Huaxian Agricultural Technology Promotion Center, Huaxian 456400, Henan, China
  • Received:2024-05-23 Revised:2024-09-05 Online:2025-10-15 Published:2025-10-21

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Abstract:

Xundan 168 is a breakthrough new maize variety developed by the Hebi Academy of Agricultural Sciences using inbred lines Xun M6968 as female parent and Xun NQ33 as male parent, which satisfies the high yield and stable yield, disease resistance, wide adaptability, drought resistance and high temperature tolerance. In order to better promote the breeding of new maize varieties in the Huang-Huai-Hai region, based on the evaluation of the outstanding high yield, stable yield and adaptability of Xundan 168, this study summarized the breeding process of this variety, analyzed the improvement of maize germplasm and the breeding of new varieties in the Huang-Huai-Hai region, and deeply discussed the germplasm innovation, heterosis breeding mode innovation, and the utilization of foreign germplasms.

Key words: Maize, Xundan 168, Variety breeding, Germplasm innovation, Heterosis breeding mode, Utilization of foreign germplasms

Fig.1

Plant population morphology during flowering stage and ear characteristics of Xundan 168 after grain ripening"

Table 1

The yield of Xundan 168 in different tests"

年份
Year		 试验组别
Test group		 平均产量
Average yield (kg/hm2)		 比对照
Compare with CK (%)		 位次
Rank		 总试验点次
Total test sites		 增产点率
Percentage of yield increase sites (%)
2019 黄淮海区域联合比较试验 10 734.0 10.8 2 22 95.4
2020 黄淮海区域联合比较试验 11 944.5 13.4 1 22 95.4
2021
 黄淮海夏玉米区域试验
（河南农科联合体）		 9447.0
 17.6
 1
 41
 100.0
2022
 黄淮海夏玉米区域试验
（河南农科联合体）		 10 045.5
 7.9
 2
 41
 92.7
2022
 黄淮海夏玉米生产试验
（河南农科联合体）		 9789.0
 7.4
 2
 41
 97.6

Table 2

The identification of field inoculation diseases of Xundan 168"

年份
Year		 鉴定机构
Appraisal department		 茎腐病
Stem rot		 小斑病
Southern corn leaf blight		 弯孢霉叶斑病
Curvularia leaf spot		 瘤黑粉病
Common smut		 穗腐病
Ear rot		 南方锈病
Southern rust
2021 河南农业大学植物保护学院 HR R S S S MR
山东农业大学植物保护学院 MR R S S S MR
2022 河南农业大学植物保护学院 HR R MR HR R R
山东农业大学植物保护学院 HR R S HR MR MR

Table 3

Grain quality determination of Xundan 168"

品种
Variety		 容重
Bulk density (g/L)		 粗蛋白含量
Crude protein content (%)		 粗脂肪含量
Crude fat content (%)		 粗淀粉含量
Crude starch content (%)		 赖氨酸含量
Lysine content (%)
浚单168 Xundan 168 776.0 10.26 3.80 74.66 0.29
郑单958 Zhengdan 958 759.6 9.33 3.98 73.02 0.25
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