Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (6): 1132-1137.DOI: 10.3969/j.issn.1000-2561.2020.06.009

• Phytophysiology and Biochemistry • Previous Articles     Next Articles

Morphological and Physiological Characteristics of Areca catechu L. Seedlings under Different Soil Moisture Contents

LI Han,YANG Fusun(),LI Changzhen,CHEN Qi,ZHANG Han,JIU Fengfeng,CHEN Caizhi   

  1. College of Tropical Crop, Hainan University, Haikou, Hainan 570228, China
  • Received:2019-07-10 Revised:2019-10-22 Online:2020-06-25 Published:2020-07-30
  • Contact: YANG Fusun


Five water gradients, T1: (30±5)%, T2: (45±5)%, T3: (60±5)%, T4: (75±5)%, T5: (90±5)%, were used to clarify the relationship between soil moisture and areca seedlings (Areca catechu L. seedling). The morphology, photosynthetic characteristics, chlorophyll content and root activity of the seedlings were determined. The result showed that the relative soil water content of about 55%-65% could increase the plant height, stem diameter, leaf area and leaf length. The plant height and stem diameter ratio of the seedlings increased by 26.89% and 19.89% respectively under 25%-35% relative soil water content. And the net photosynthetic rate and transpiration rate of the seedlings reached significant levels. When the relative soil water content was more than 55%-65%, the cracked leaves of the seedlings increased, but the chlorophyll content decreased gradually. When the relative soil water content was less than 55%, the chlorophyll content and root activity of the seedlings decreased. With the decrease of soil relative water content, the root-shoot ratio of the seedlings increased. The chlorophyll content of the seedlings reached the lowest value of 11.16 mg/g under 30% relative soil water content, but the water use efficiency was higher than that in other treatments. The leaves of the seedlings were yellow, and the plants were short, and the root activity was also small. In conclusion, when the relative water content in soil was 55%-65%, it was beneficial to the growth of areca seedlings.

Key words: Areca catechu L. seedling, soil moisture, photosynthetic characteristics, physiological characters

CLC Number: