中国农业科学 ›› 2026, Vol. 59 ›› Issue (21): 4729-4745.doi: 10.3864/j.issn.0578-1752.2026.21.003

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

国审玉米品种株高与穗位高构成特征及不同生态区差异分析

杨扬1(), 常诗惠1(), 曾波2, 李煜铭2, 张如养1, 徐田军1, 孙轩1, 陈传永1, 曹强1, 王凤格1, 赵久然1()   

  1. 1 北京市农林科学院玉米研究所/农业农村部农作物DNA指纹创新利用重点实验室(部省共建)/玉米DNA指纹及分子育种北京市重点实验室, 北京 100097
    2 全国农业技术推广服务中心, 北京 100125
  • 收稿日期:2026-08-16 接受日期:2026-09-28 出版日期:2026-11-01 发布日期:2026-11-06
  • 通信作者:
    赵久然,E-mail:
  • 联系方式: 杨扬,E-mail:caurwx@163.com。常诗惠,E-mail:changshihui0225@163.com。杨扬和常诗惠为同等贡献作者。
  • 基金资助:
    北京市乡村振兴农业科技项目(NY2401060026)

Analysis on the Composition Characteristics of Plant Height and Ear Height of Nationally Approved Maize Varieties and the Differences in Different Ecological Regions

YANG Yang1(), CHANG ShiHui1(), ZENG Bo2, LI YuMing2, ZHANG RuYang1, XU TianJun1, SUN Xuan1, CHEN ChuanYong1, CAO Qiang1, WANG FengGe1, ZHAO JiuRan1()   

  1. 1 Maize Research Institute, Beijing Academy of Agriculture and Forestry Sciences/Key Laboratory of Crop DNA Fingerprinting Innovation and Utilization, Ministry of Agriculture and Rural Affairs (Co-construction by Ministry and Province)/Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097
    2 National Agricultural Technology Extension and Service Center, Beijing 100125
  • Received:2026-08-16 Accepted:2026-09-28 Published:2026-11-01 Online:2026-11-06

摘要:

【目的】株高和穗位高是玉米最直观和重要的性状之一,通过分析其构成特征和变化趋势,以及在不同生态区间的差异表现,为进一步认识品种更替对株型结构的影响和不同环境对株型的塑造作用提供理论依据。【方法】搜集整理2000—2025年国家审定玉米品种信息共7 502个品次,对不同品种类型的株高、穗位高构成特征和相关性进行统计,并在株高等级和对应数据的基础上推导穗位高等级阈值,从不同生态区和同一品种跨区2个角度分析这两个性状的适应性表现和变异来源,并揭示二者的年际演变规律。【结果】6 379个品次的大田籽粒玉米株高平均为284.6 cm,穗位高平均为109.0 cm;898个品次的鲜食(甜、糯)玉米株高平均为228.2 cm,穗位高平均为89.9 cm;183个品次的青贮玉米株高平均为302.0 cm,穗位高平均为130.0 cm;42个品次的爆裂玉米株高平均为245.9 cm,穗位高平均为112.8 cm。穗位高分为5个等级:超高穗位、高穗位、中穗位、低穗位和超低穗位,其分割线分别为138、108、87和51 cm。根据株高、穗位高等级划分,籽粒玉米以高秆和中秆、高穗位和中穗位为主,鲜食玉米以中秆和矮秆、中穗位和低穗位为主,青贮玉米以高秆、高穗位为主,爆裂玉米以中秆、高穗位为主。国家区试组不同生态区的株高统计分布均呈现由东南春播区向东华北中熟区递增、再向北方极早熟区递减的趋势,穗位高则呈现由东南春播区向西南、西北春播区递增的趋势,其中,品次数量最多的黄淮海夏播区株高和穗位高均值分别为268.5和101.0 cm,并以中秆和中穗位为主;排名第二的东华北春播区则分别为293.3和113.7 cm,并以高秆和高穗位为主。2个性状的聚类分组结果相似,东南春播区、黄淮海夏播区、京津冀早熟区、北方早熟区和北方极早熟区株型较小,西北春播区、东华北春播区、东华北中熟区和东华北中早熟区株型较大。同一品种通过审定对应的2个生态区地理位置的距离越大,其跨区表型差异越大,其中,东南春播区和东华北春播区的跨区表型差异最大,后者比前者平均高54.6(株高)和35.8 cm(穗位高),且穗位高更易受环境变化影响。近26年内,籽粒玉米株高年际波动幅度小,并以年均增加0.79 cm的速度上升,穗位高则以年均减少0.19 cm的速度下降。【结论】由于育种目标、环境条件不同,各类型玉米的株型结构差异较大。籽粒玉米作为我国玉米的主要构成品种,其株型较高大,这与通过增大生物量积累以实现高产的育种理念密不可分。而鲜食玉米为保障果穗品质表现株型较为矮小,其蕴含丰富的矮秆种质资源以待充分挖掘。同时,光温匹配度、生长期内降水量大小等可能影响表型分化的因素值得进一步关注。

关键词: 玉米, 品种审定, 株高, 穗位高, 生态区

Abstract:

【Objective】Plant height and ear height are key morphological traits in maize, serving as intuitive indicators of plant architecture. Analyzing their compositional characteristics, temporal trends, and regional variation across ecological zones provides a theoretical foundation for understanding how varietal replacement reshapes plant architecture structure and how environmental gradients influence phenotypic expression. 【Method】A comprehensive dataset comprising 7 502 nationally approved maize varieties released between 2000 and 2025 was compiled. Statistical analyses were conducted to characterize the distribution, correlation, and interrelationships of plant height and ear height across variety types. A stratified threshold system for ear height was established based on empirical quantiles derived from plant height strata and corresponding ear height distributions. Adaptive performance and sources of phenotypic variation were assessed from two complementary perspectives: (1) inter-regional comparison across major ecological testing zones, and (2) intra-varietal cross-regional expression—i.e., phenotypic consistency or plasticity of the same variety grown in different environments. Temporal evolution of both traits over the 26-year period was further quantified. 【Result】Among 6 379 grain maize varieties, average plant height was 284.6 cm and average ear height was 109.0 cm. For 898 fresh maize (sweet and waxy) varieties, average plant height was 228.2 cm and average ear height was 89.9 cm. Silage maize (n=183) exhibited the tallest stature (average plant height= 302.0 cm; average ear height= 130.0 cm), whereas pop maize (n=42) averaged 245.9 cm in plant height and 112.8 cm in ear height. The ear height is divided into five grades: ultra-high ear position, high ear position, medium ear position, low ear position and ultra-low ear position, and the dividing lines are 138 cm, 108 cm, 87 cm and 51 cm respectively. Based on joint classification of plant height and ear height, grain maize predominantly fell into high and medium stem with high and medium ear position. Fresh maize clustered in medium and dwarf stem with medium and low ear position. Silage maize is mainly high stem with high ear position, and pop maize is primarily medium stem with high ear position. The statistical distribution of plant height in different ecological regions of the national regional test group showed a trend of increasing from the Dong-Nan spring-sowing regions (DN) to the medium maturity region of the Dong-Hua-Bei (DHB-M), and then decreasing to the Bei-Fang very early-maturity region (BF-VE). The ear height showed an increasing trend from the DN to the Xi-Nan (XN) and Xi-Bei (XB) spring-sowing regions. The Huang-Huai-Hai summer-sowing region (HHH), hosting the largest number of tested varieties, exhibited average plant and ear heights of 268.5 cm and 101.0 cm, respectively—predominantly medium stem and medium ear position. The second-ranked Dong-Hua-Bei spring-sowing region (DHB) were 293.3 cm and 113.7 cm, respectively, and were dominated by high stem and high ear position. Hierarchical clustering of both traits yielded congruent patterns: smaller plant architecture was observed in DN, HHH, Jing-Jin-Ji early-maturing (JJJ-E), Bei-Fang early-maturity region (BF-E), and BF-VE regions; larger plant architecture prevailed in XB, DHB, DHB-M, and Dong-Hua-Bei medium-early (DHB-ME) regions. Cross-regional phenotypic divergence increased significantly with geographical distance between the two ecological zones where the same variety was approved—most pronounced between DN and DHB, where DHB varieties averaged 54.6 cm taller in plant height and 35.8 cm higher in ear height than their DN counterparts. Notably, ear height demonstrated greater environmental sensitivity than plant height. Over the 26-year period, grain maize plant height increased modestly (average annual increment: 0.79 cm), whereas ear height declined steadily (average annual decrement: 0.19 cm). 【Conclusion】Distinct breeding objectives and divergent environmental selection pressures have driven substantial differentiation in plant architecture among maize market classes. Grain maize (the dominant category in China’s national variety portfolio) exhibits taller, bulkier architecture, reflecting a long-standing breeding emphasis on maximizing biomass accumulation for yield enhancement. In contrast, fresh maize prioritizes ear quality and harvest efficiency, resulting in shorter, which contains abundant dwarf germplasm resources to be fully excavated. Further investigation into environmental drivers (including photoperiod-temperature interactions and seasonal precipitation patterns during critical growth stages) is warranted to disentangle the relative contributions of genetic and environmental factors to phenotypic differentiation.

Key words: maize, variety approval, plant height, ear height, ecological region