Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (8): 21-29.doi: 10.11924/j.issn.1000-6850.casb2023-0265

Previous Articles     Next Articles

Effects of Different Substrates on Growth and Physiological Characteristics of Rhizophora stylosa Seedlings

JIA Xianglu1,2,4,5(), OUYANG Zilong2,4,5, LIU Jiazhe3, FAN Donghan3, TENG Weichao2, LIU Xiu1()   

  1. 1 Guangxi Forestry Research Institute, Nanning 530000
    2 College of Forestry, Guangxi University, Nanning 530004
    3 Forestry Institute of Qinzhou, Qinzhou, Guangxi 535000
    4 Nanning Botanical Garden, Nanning 530004
    5 Nanning Qingxiu Mountain Scenic Spots Tourism Development Co., Ltd., Nanning 530004
  • Received:2023-04-10 Revised:2023-06-22 Online:2024-03-10 Published:2024-03-10

Abstract:

This study aims to select the suitable substrate for the growth of Rhizophora stylosa seedlings, improve the cultivation efficiency and environmental adaptability. In this study, four different substrate ratios of sand, sand: mud (7:3), sand: mud (3:7), and mud were set up to determine the growth indexes, biomass, root morphological indexes and physiological indexes of Rhizophora stylosa seedlings under different substrate ratios. The results showed that the seedlings treated with sand: mud (7:3) had higher growth indexes, root indexes, biomass, photosynthetic pigment content and active oxygen scavenging ability, which was conducive to growth and development. With the increase of mud proportion, all the growth physiological indexes of the Rhizophora stylosa seedlings decreased. The nutrient content of sand is lower than that of mud, so it is necessary to pay close attention to the nutrient requirement and supplement nutrient input in time. The composite scores of principal components showed that sand: mud (7:3) was the best seedling medium for Rhizophora stylosa.

Key words: Rhizophora stylosa, substrate, grow, root morphology, physiological index