Foliar application of chlorocholine chloride improves leaf mineral nutrition, antioxidant enzyme activity, and tuber yield of potato (Solanum tuberosum L.)

Huigun Wang, Langtao Xiao, Jianhua Tong, Fulai Liu

    Research output: Contribution to journalJournal articleResearchpeer-review

    22 Citations (Scopus)

    Abstract

    In southern China, potatoes (Solanum tuberosum L.) are grown in the late season and the crops are often subjected to low temperature stress particularly during the tuber bulking stage. Exogenous chlorocholine chloride (CCC) treatment has been found to improve crop performance under suboptimal growth conditions; however, the physiological mechanisms underlying the beneficial effects have not been fully understood. The objective of this study was to investigate the effects of CCC treatment on mineral nutrition, antioxidant enzyme system, and tuber yield of potato (cv. Zhongshu 3) under field conditions. The plants were foliar sprayed twice with 1.5, 2.0 and 2.5 g l-1 CCC at 24 and 28 days after emergence (DAE), respectively; and plants without CCC treatment were serviced as control. Leaf samples were collected on 56 DAE for determination of mineral nutrition contents and antioxidant enzyme activity. Results showed that 1.5 and 2.0 g l-1 CCC treatments significantly increased the contents of P, K, Ca, Mg, Fe, Mn, Zn and Cu in potato leaves. These treatments also increased superoxide dismutase (SOD), peroxidases (POD) and catalase (CAT) activities in the leaves. A positive linear relationship was found between SOD activity and the content of Fe + Mn + Zn + Cu. Tuber yield was significantly increased by CCC treatment. It is concluded that treatment with certain concentration of CCC (e.g. 1.5-2.0 g l-1) improves mineral nutrition and SOD, POD and CAT activities in potato leaves; which might have contributed to the higher tuber yield of the crop grown under suboptimal conditions.
    Original languageEnglish
    JournalScientia Horticulturae
    Volume125
    Issue number3
    Pages (from-to)521-523
    Number of pages3
    ISSN0304-4238
    DOIs
    Publication statusPublished - 2010

    Keywords

    • BRIC
    • Antioxidant Enzyme system
    • Chlorocholine chloride
    • Mineral Nutrition
    • Solanum Tuberosum L
    • *Tuber Yield

    Cite this