PJB-2024-250
SEED MORPHOLOGICAL STRUCTURE AND GERMINATION OF ASPARAGUS COCHINCHINENSIS (LOUR.) MERR.
HUI WANG
Abstract
Asparagus cochinchinensis seeds from Neijiang were used as experimental materials to evaluate the morphological structure and seed germination process, quantify the physicochemical parameters, and investigate the germination characteristics under various soaking treatments. The results revealed that A. cochinchinensis was a typical monocotyledon; the seeds were spherical and had a hard texture; they were made up of seed coat, seed hole, seed umbilicus, embryo, and endosperm; they had a horizontal diameter of 3.66 mm to 4.26 mm, a hundred-grain weight of 3.16 g, and a hard seed rate of 98.20 %. The seeds water absorption rate increased and then stabilized, reaching 9.34% after 18 hours of soaking at 25℃, which was close to the peak of water absorption. The seeds germinated well in the incubator at 25℃ for 36 hours after soaking, with a germination rate of 62.5 %, a germination index of 2.9, and a vitality index of 459.59. The seeds germinated in 11 days, with a 28-day germination cycle. Buds appeared in 30 days, followed by foliar branches and lateral roots in 45 days. The results of the study provide reference for further research on genetic characterization and sexual reproduction of Asparagus.
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