中国农业科技导报 ›› 2022, Vol. 24 ›› Issue (8): 55-64.DOI: 10.13304/j.nykjdb.2021.0610

• 生物技术 生命科学 • 上一篇    下一篇

不同播期对谷子DUS测试性状的影响

焦雄飞(), 于晋, 冯乐勇, 郭耀东, 樊丽生   

  1. 山西农业大学玉米研究所,山西 忻州 03400
  • 收稿日期:2021-07-23 接受日期:2021-11-04 出版日期:2022-08-15 发布日期:2022-08-22
  • 作者简介:焦雄飞E-mail:moon413@163.com
  • 基金资助:
    农业农村部物种品种保护项目(111821301354051024)

Effect of Different Sowing Dates on the Expression of Grain DUS Testing Characteristics

Xiongfei JIAO(), Jin YU, Leyong FENG, Yaodong GUO, Lisheng FAN   

  1. Maize Research Institute,Shanxi Agricultural University,Shanxi Xinzhou 034000,China
  • Received:2021-07-23 Accepted:2021-11-04 Online:2022-08-15 Published:2022-08-22

摘要:

随着现代育种技术的快速发展,品种更新日益加快,对谷子新品种权的保护迫切需要完善。以5个春谷品种、5个夏谷品种和5个杂交谷品种为试验材料,分3个播期种植,研究山西省忻州地区播期差异对谷子DUS(特异性、一致性和稳定性)测试性状的影响。结果表明,播期对谷子质量性状、假质量性状以及目测型数量性状均无显著影响;播期对谷子测量型数量性状的影响程度不同,各个性状的变异系数大小顺序依次为:成穗茎数>出谷率>单码籽粒数>单穗重>穗颈长度>穗粗度>茎秆粗度>穗长度>倒2叶宽度>抽穗期>伸长节节间数>倒2叶长度>茎秆长度。在单个性状中,各品种受不同播期的影响程度也各不相同,穗颈长度受播期影响的品种最多,15个品种在3个播期下均存在显著性差异(P<0.05);倒2叶长度、成穗茎数、出谷率受播期影响的品种最少,每个性状均有12个品种存在显著差异(P<0.05)。播期对谷子DUS测试性状的影响存在差异,质量性状、假质量性状和目测型数量性状的稳定性高于测量型数量性状。上述结果为不同测试区科学合理筛选DUS测试标准品种提供了参考和理论依据。

关键词: 谷子, DUS测试, 性状

Abstract:

With the rapid development of modern breeding technology, the speed of variety renewal is increasing and the protection of new millet variety rights has become an urgent need for improvement. In this study, 5 spring foxtail millet varieties, 5 summer foxtail millet varieties and 5 hybrid foxtail millet varieties were used as materials and planted at 3 different sowing dates to study the effect of sowing date in Xinzhou region on the DUS (distinctness, uniformity and stability) test characteristics of foxtail millet. The results showed that different sowing dates had no significant effect on the qualitative, pseudo-qualitative and visual observation characteristics of foxtail millet. The effect of the sowing dates on the measurement quantitative characteristics of foxtail millet were different, and the order of variation coefficient of each characteristics was: number of spike stems > rate of grain > number of single-code grain > length of the single-spike heavy > spike neck > thickness of the spike > thickness of the stalk > length of the spike > width of the inverted second leaf > number of elongation sections between > elongation sections of the spike period > length of the inverted second leaf > length of the stalk. For a single trait, the degree of influence on each variety varied under differently by different sowing dates. the length of the spike neck was affected by the most varieties during the sowing dates, and 15 varieties had significant differences at 3 sowing dates (P<0.05); number of inverted second-leaf length, number of spiked stems, rate of valley out and the number of spiked stems were the least affected varieties during the sowing dates, with significant differences of 12 varieties for each trait (P<0.05). There were differences in the effect of the sowing dates on the test characteristics of millet DUS, and the stability of visual traits was higher than quantitative traits. The above results provided reference and theoretical basis for the scientific and rational screening of DUS test standard varieties in different sowing dates.

Key words: foxtail millet, DUS testing, characteristics

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