河南农业科学 ›› 2022, Vol. 51 ›› Issue (6): 54-66.DOI: 10.15933/j.cnki.1004-3268.2022.06.006

• 作物栽培·遗传育种 • 上一篇    下一篇

芝麻苗期氮高效品种筛选及氮效率评价体系建立

张鹏钰,高桐梅,苏小雨,李丰,王东勇,田媛,芦海灵,苗红梅,卫双玲   

  1. (河南省农业科学院芝麻研究中心/河南特色油料作物基因组学重点实验室/农业农村部黄淮海油料作物重点实验室,河南 郑州 450002)
  • 收稿日期:2021-12-20 出版日期:2022-06-15 发布日期:2022-08-15
  • 通讯作者: 卫双玲(1962-),女,河南济源人,研究员,硕士,主要从事芝麻栽培生理研究。E-mail:wsl1041162@126.com
  • 作者简介:张鹏钰(1991-),女,河南郑州人,博士,主要从事芝麻栽培生理研究。E-mail:zpyxiyuan@163.com
  • 基金资助:
    河南省农业科学院优秀青年科技基金项目(2022YQ01);国家现代农业产业技术体系项目(CARS-14-1-14);河南省重大科
    技专项(201300110600-4);河南省农业科学院自主创新项目(2020ZC53,2021ZC7)

Screening of Nitrogen Efficient Varieties and Construction of Nitrogen Efficiency Assessment System at Seedling Stage of Sesame(Sesamum indicum L.)

ZHANG Pengyu,GAO Tongmei,SU Xiaoyu,LI Feng,WANG Dongyong,TIAN Yuan,LU Hailing,MIAO Hongmei,WEI Shuangling   

  1. (Sesame Research Center,Henan Academy of Agricultural Sciences/Henan Key Laboratory of Specific Oilseed Crops Genomics/Key Laboratory of Oil Crops in Huanghuaihai Plains,Ministry of Agriculture and Rural Affairs,Zhengzhou 450002,China)
  • Received:2021-12-20 Published:2022-06-15 Online:2022-08-15

摘要: 为筛选苗期氮高效芝麻品种,构建芝麻苗期氮效率评价体系,在不同氮水平下测定18个芝麻品种苗期生理指标和氮效率指标,利用变异系数、相关分析、主成分分析、通径分析、隶属函数分析和灰色关联度分析筛选芝麻苗期氮高效品种,确定芝麻氮高效筛选评价指标,构建芝麻苗期氮高效评价体系。结果表明,各性状在不同供氮水平和品种间均存在显著差异,正常氮和高氮水平下植株各部位的氮含量和氮利用效率的变异系数明显低于低氮水平。不同氮水平下,供试芝麻品种的茎干质量、叶干质量、根氮吸收效率和叶氮吸收效率任何2个指标之间均呈显著或极显著正相关。通过用欧式距离最长距离法将18个品种划分成3个等级,其中,郑太芝3号和郑芝HL05为氮高效品种,扶绥三合黑芝麻和缅甸高产者为氮低效品种。不同施氮水平下,茎鲜质量、叶鲜质量、叶干质量和茎干质量均与芝麻氮高效综合得分值关联系数较高,是芝麻氮高效筛选的重要指标。不同氮水平下,2个氮高效品种在根鲜质量和干质量上表现出较高的优势,低氮水平下2个氮高效芝麻品种的主根长及各组织的氮吸收、利用效率均显著高于高氮和正常氮水平。可见,低氮水平更适合筛选芝麻苗期氮高效品种,芝麻苗期的氮效率主要由氮吸收效率决定。

关键词: 芝麻, 苗期, 品种筛选, 氮效率评价

Abstract: In order to screen the sesame varieties with high nitrogen efficiency from different sesame varieties and construct an assessment system of nitrogen efficiency at seedling stage,the physiological and nitrogen efficiency traits of 18 sesame varieties at seedling stage under different nitrogen levels were measured.The variation coefficient,correlation analysis,principal component analysis,path analysis,membership function analysis and grey correlation degree analysis were used to screen nitrogen efficient varieties,determine nitrogen efficient evaluation traits,and construct nitrogen efficient evaluation system at the seedling stage of sesame.The results showed that among different varieties,there were significant differences in various traits under different nitrogen levels.Under normal and high nitrogen levels,the variation coefficients of nitrogen content and nitrogen utilization efficiency of plants showed lower than those of low nitrogen level.Under different nitrogen treatments,there was a significant or very significant positive correlation among stem dry weight,leaf dry weight,root nitrogen absorption efficiency and leaf nitrogen absorption efficiency of sesame varieties.The 18 varieties were divided into three grades by the European distance longest distance method,among them,Zhengtaizhi No.3 and Zhengzhi HL05 were nitrogen efficient varieties,Fusui Sanhe black sesame and Burmese prolific were nitrogen inefficient varieties.Under different nitrogen levels,the stem fresh weight,leaf fresh weight,leaf dry weight and stem dry weight were all highly correlated with the comprehensive score of nitrogen efficiency,which were important traits for screening of nitrogen efficient sesame varieties.Under different nitrogen levels,the two nitrogen efficient varieties showed higher advantages in root fresh weight and dry weight,and the two sesame cultivars with high nitrogen efficiency under low nitrogen level had higher taproot length,nitrogen uptake and utilization efficiency in various tissues than those under normal and high nitrogen levels.At seedling stage,low nitrogen level was more suitable for screening nitrogen efficient sesame varieties,and the nitrogen use efficiency of sesame was mainly determined by the nitrogen uptake efficiency.

Key words: Sesamum indicum L. , Seedling stage, Varieties selection, Nitrogen efficiency evaluation

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