Effects of Super Absorbent Polymers (SAP) and Nitrogen Fertilizer Mixture on Resistance Physiology Indexes of <i>Dendrocalamus latiflorus</i>
Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (3): 460-467.DOI: 10.3969/j.issn.1000-2561.2019.03.007

• Phytophysiology and Biochemistry • Previous Articles     Next Articles

Effects of Super Absorbent Polymers (SAP) and Nitrogen Fertilizer Mixture on Resistance Physiology Indexes of Dendrocalamus latiflorus

RONG Jundong1,FAN Lili1,CHEN Liguang1,*(),HE Tianyou2,ZHENG Jingjing1,ZHENG Yushan1   

  1. 1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350000, China
    2. College of Landscape, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350000, China
  • Received:2018-09-03 Revised:2019-01-09 Online:2019-03-15 Published:2019-03-15
  • Contact: CHEN Liguang

Abstract:

Different dosage of super absorbent polymers (SAP) and nitrogen fertilizer were studied in coastal protected bamboo forests to identify the stress resistance physiology of bamboo leaf. Super absorbent polymers (SAP) (30, 60, 90 g/plexus) and nitrogen (200, 400, 600 g/plexus) were applied to the bamboo shoots of two-year old Dendrocalamus latiflorus (July, August, and September). The variation in photosynthetic pigments, biochemical attributes (proline, soluble protein, and soluble sugar), and antioxidant enzymes (malondialdehyde (MDA), electrolyte penetration rate, superoxide dismutase (SOD), and peroxidase (POD) were determined. The results revealed that the photosynthetic pigments, proline, soluble protein, soluble sugar, and activity of SOD and POD were higher in different dosage of SAP and nitrogen fertilizer compared to CK, whereas MDA content and electrolyte penetration rate were both lower in different treatments than CK. During growing season (July, August, and September), concentrations of photosynthetic pigments varied little, while the contents of proline, soluble protein, soluble sugar, and the activities of SOD and POD were minimum in August. On the contrary, MDA content and electrolyte penetration rate were higher in August. The order of super absorbent polymers (SAP) and nitrogen fertilizer mixture treatments: A3B3>A2B3>A1B2>A3B2>A3B1>A2B1> A1B1>A1B3>A2B2>CK.

Key words: super absorbent polymers (SAP), nitrogen fertilizer, Dendrocalamus latiflorus, resistance physiology