PJB-2025-438
KARST VEGETATION RESTORATION: A METHORD FOR IMPROVING THE EFFICIENT SEEDING CULTIVATION OF LOROPETALUM CHINENSE SEEDS
YANAN WANG
Abstract
Loropetalum chinense (R. Br) Oliv., as one of the advantageous tree species for vegetation restoration in karst rocky mountains. The phenomenon of growing into independent plants through seed germination (sexual reproduction) under natural conditions is rare, indicating that the karst habitat limits seed reproduction. This study collected mature seeds from the field and brought them back to the laboratory for four different treatment experiments (low-temperature sand stratification, temperature, presence or absence of beaker filter paper upright germination device, and growth substrate) to investigate the effects on seed germination percentage and emergence percentage. The results showed that the seeds were subjected to a 90 d low-temperature sand stratification method (with a seed to river sand ratio of 1:4) to break their deep physiological dormancy. Then the seeds were placed at a temperature range of 24-27 ℃ and on a beaker filter paper upright germinator for strengthen plumule. The highest germination percentage obtained was 92.48 %, and the final emergence percentage was 93.08 % when sown in nutrient soil. In summary, this study is conducive to breaking through the bottleneck of seed cultivation in the past, and providing technical support and theoretical guidance for germplasm resource protection, seed propagation, and vegetation reconstruction.
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