›› 2020, Vol. 32 ›› Issue (3): 447-454.DOI: 10.3969/j.issn.1004-1524.2020.03.09

• Horticultural Science • Previous Articles     Next Articles

Effects of different rootstock combinations on physiological characteristics and selenium accumulation of Nasturtium officinale cuttings

HUANG Kewen1, LI Keqiang1, LIU Ji2, SUI Liyun2, LIU Lei2, WANG Ting2, ZHENG Yangxia1, LIN Lijin3, LIAO Ming'an1,*   

  1. 1.College of Horticulture, Sichuan Agricultural University, Chengdu 611130, China;
    2.Chengdu Academy of Agriculture and Forestry Sciences, Chengdu 611130, China;
    3.Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2019-08-06 Online:2020-03-25 Published:2020-04-03

Abstract: Pot experiment was carried out with Brassica chinensis, Brassica napus, Raphanus sativus, Rorippa dubia, Brassica oleracea as rootstocks, and Nasturtium officinale was used as the scion. The effects of different rootstocks on the growth, pigment accumulation, protective enzymes activities and selenium accumulation ability of N. officinale cuttings were studied under the conditions of soil selenium concentration of 10 mg·kg-1. The results showed that after grafting with B. napus, R. sativus and B. oleracea, the biomass of all parts of N. officinale cuttings as well as chlorophyll a, chlorophyll b and carotenoid contents were significantly higher than un-grafted N. officinale. The grafting of R. dubia as a rootstock not only decreased the biomass of the N. officinale cuttings, but also inhibited the activity of SOD, POD and CAT. Although grafting of B. chinensis as rootstock significantly increased the photosynthetic pigment content, SOD and CAT activities of N. officinale cuttings, the biomass of roots, stems and leaves were significantly lower than those of the control. In addition, the grafting treatment with B. oleracea as a rootstock significantly improved the CAT activity and soluble protein content of the N. officinale cuttings, and effectively reduced the malondialdehyde content, and significantly enhanced the selenium-tolerant ability of N. officinale cuttings. There were significant differences in the effects of five kinds of rootstocks on selenium accumulation in N. officinale cuttings. Among them, the grafting treatment of R. sativus as rootstocks maximized the selenium content and selenium accumulation in the shoots of N. officinale cuttings, which could provide some reference for the cultivation and breeding of selenium-accumulation vegetables.

Key words: Nasturtium officinale, grafting, cutting, selenium, growth

CLC Number: