DIFFERENT SEEDLING RAISING METHODS AFFECT CHARACTERISTICS OF MACHINE-TRANSPLANTED RICE SEEDLINGS

作者：Cheng, S. R.; Ashraf, U.; Zhang, T. T.; Mo, Z. W.; Kong, L. L.; Mai, Y. X.; Huang, H. L.; Tang, X. R.^*

来源：Applied Ecology and Environmental Research, 2018, 16(2): 1399-1412.

DOI：10.15666/aeer/1602_13991412

• physiological character
• root growth
• rice nursery
• seed germination
• seedling-raising methods

Present study was aimed to select the suitable seedling raising method with high seedling quality for the machine-transplanted rice. The seeds of two rice cultivars i. e., Xiangyaxiangzhan and Wufengyou 615 were grown under four different seedling-raising methods i. e., the traditional seedlingraising method (TWSM), the dry seedbed nursery raising method (DSBM), the wet seedbed raising method (WSBM), and the substrate seedbed nursery raising method (SSBM). Results showed that the highest seed germination and seedling establishment rates were recorded in SSBM followed by DSBM, and TWSM. Rice seedlings grown in SSBM have maximum seedling length, longer leaves and leaf sheath as well as dry biomass than other establishment methods. Further, number of roots, root length, root surface area and root diameter were also found significantly (P = 0.05) higher than those seedlings which were established by normal farmer practice (TWSM). Additionally, higher proline, protein and soluble sugars contents and SPAD values (an indicator of chlorophyll contents) were also recorded in SSBM. Hence, SSBM would result in improved rice seedlings, compared to those under traditional nursery, dry bed nurse and wet bed nursery.

• 出版日期2018
• 单位华南热带农业大学; 华南农业大学