Journal of Integrative Agriculture ›› 2017, Vol. 16 ›› Issue (11): 2459-2469.DOI: 10.1016/S2095-3119(16)61598-8

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  • 收稿日期:2016-11-21 出版日期:2017-11-20 发布日期:2017-11-03

Genetic variation of yellow pigment and its components in foxtail millet (Setaria italica (L.) P. Beauv.) from different eco-regions in China

YANG Yan-bing1, 2, JIA Guan-qing3, DENG Li-gang4, QIN Ling2, CHEN Er-ying2, CONG Xin-jun5, ZOU Ren-feng5, WANG Hai-lian2, ZHANG Hua-wen2, LIU Bin2, GUAN Yan-an2, DIAO Xian-min3, YIN Yan-ping     

  1. 1 College of Agronomy, Shandong Agricultural University/State Key Laboratory of Crop Biology, Tai’an 271018, P.R.China
    2 Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, P.R.China
    3 Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
    4 Institute of Quality Standard and Testing Technology for Agro-Products, Shandong Academy of Agricultural Sciences, Jinan 250100, P.R.China
    5 Institute of Minor Crops, Tai’an Academy of Agricultural Sciences, Tai’an 271018, P.R.China
  • Received:2016-11-21 Online:2017-11-20 Published:2017-11-03
  • Contact: Correspondence YIN Yan-ping,Tel:+86-538-8242458,E-mail:ypyin@sdau.edu.cn;DIAO Xian-min,Tel:+86-10-62126889,E-mail:diaoxianmin@caas.cn;GUAN Yan-an,Tel:+86-531-83178115,E-mail:Yguan65@163.com
  • About author:YANG Yan-bing, E-mail: ybyang_666@163.com
  • Supported by:

    This study was supported by the Natural Science Foundation of Shandong, China (ZR2014YL021), the earmarked fund for China Agricultural Research System (CARS-06), the Shandong Agricultural Research System Innovation Team, China (SDAIT-14-03), and the Key Projects of Science and Technology Innovation of Shandong Academy of Agricultural Sciences, China (2014CXZ-4).

Abstract:     Kernel color is an important trait for assessing the commercial and nutritional quality of foxtail millet.  Yellow pigment content (YPC) and carotenoid components (lutein and zeaxanthin) of 270 foxtail millet accessions, including 50 landraces and 220 improved cultivars, from four different eco-regions in China were surveyed using spectrophotometry and high performance liquid chromatography methods.  Results indicated that YPC had rich variance, ranging from 1.91 to 28.54 mg kg–1, with an average value of 17.80 mg kg–1.  The average YPC of improved cultivars (18.31 mg kg–1) was significantly higher than that of landraces (15.51 mg kg–1).  The YPC in cultivars from the Loess Plateau spring sowing region (LPSSR) was the highest (20.59 mg kg–1), followed by the North China summer sowing region (NCSSR, 18.25 mg kg–1), the northeast spring sowing region (NSSR, 17.25 mg kg–1), and the Inner Mongolia Plateau spring sowing region (IMPSSR, 13.92 mg kg–1).  The variation coefficients of YPC in cultivars from NSSR, LPSSR, and IMPSSR were higher than that from NCSSR.  A similar carotenoid profile was also obtained for 270 foxtail millet cultivars.  Lutein and zeaxanthin accounted for approximately 55–65% of YPC in accessions.  The lutein content was higher than zeaxanthin content in all cultivars.  The ratio of lutein to zeaxanthin ranged from 1.51 to 6.06 with an average of 3.34.  YPC was positively correlated with lutein (r=0.935, P<0.01), zeaxanthin (r=0.808, P<0.01), and growth duration (r=0.488, P<0.01), whereas it was negatively correlated with grain protein (r=−0.332, P<0.01) and 1 000-kernel weight (r=−0.153, P<0.05).  Our study is useful for screening and selecting cultivars with high levels of yellow pigment and for enhancing phytochemical concentrations in breeding programs.

Key words: foxtail millet ,  yellow pigment ,  lutein ,  zeaxanthin ,  eco-regions

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