Forest and Grassland Resources Research >
Growth adaptability of one-year Ceriops tagal seedlings to seawater submergence time
Received date: 2024-09-05
Revised date: 2024-12-11
Online published: 2025-08-06
In order to improve the survival rate of Ceriops tagal(Perr.)C.B.Rob.seedlings and explore the effects of different seawater submergence time on one-year-old C.tagal seedlings,one-year C.tagal seedlings were treated with seawater submergence time control experiments.C.tagal seedlings were submerged in seawater for 0.00,4.00,6.00,8.00,10.00,12.00,14.00,16.00,18.00,20.00,22.00 h/d.The morphological and physiological indexes of the seedlings were measured,and principal component analysis was used to analyze the suitable seawater submergence time for the growth of 1-year C.tagal seedlings.The results show that:1)The plantheight growth(ΔH),basal diameter growth(ΔD),and biomass dry weight growth(ΔW)of the seedlings increased first and then decreased with the prolongation of seawater submergence time,and the maximum values were measured at 8.00 h/d treatment.2)The Chl(a+b),Chl(a),and Chl(b)contents increased first and then decreased with the prolongation of seawater submergence time,and the maximum value was measured at 8.00 h/d treatment.3)The contents of malondialdehyde and proline decreased first and then increased with the prolongation of seawater submergence time,and the values measured at 8.00 h/d were the smallest.4)Superoxide dismutase activity increased with the extension of seawater submergence time.5)Principal component analysis showed that the comprehensive score of 8.00 h/d treatment was the highest,which was 3.361.It can be seen that long-term or no seawater submergence treatment has a significant inhibitory effect on the growth of 1-year C.tagal seedlings.Therefore,the suitable seawater submergence time for the growth of 1-year C.tagal seedlings was 8.00 h/d.The results revealed the suitable seawater submergence time for the growth of C.tagal seedlings,and had certain guiding significance for the afforestation of C.tagal seedlings.
Fanglan ZHANG , Zhaojia LI , Shaozhong WU . Growth adaptability of one-year Ceriops tagal seedlings to seawater submergence time[J]. Forest and Grassland Resources Research, 2025 , 0(1) : 84 -94 . DOI: 10.13466/j.cnki.lczyyj.2025.01.010
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