Morphology of seeds and seedlings, and substrates in germination of Citrus limetta

Abstract

This research studied the morphology of seeds and seedlings, in addition to obtaining information about the type and time of germination of sweet lemon seeds in five substrates (on blotting paper, between blotting paper, on washed sterilized sand, between washed sterilized sand and in paper roll). C. limetta seeds were measured, and external description was performed. Afterwards, sown in the sand and kept at 25 ºC to monitoring germination and morphological description of the resulting seedlings. A second experiment was evaluated for substrate efficiency: paper roll, on and between paper, on and between sand in the germination of C. limetta seeds. Speed index, average time and relative frequency of germination were evaluated. In addition, date of the first and last germination count was established. Treatment averages were compared using the Tukey test at 5% probability. C. limetta seeds are ovoid, slightly wrinkled and polyembryonic. Germination is hypogeal, cryptocotylar or phanerocotylar. The seedlings have leathery eophylls with simple leaves, elliptical shape or close to the elliptical, tending to ovate. It has a pivoting root system that is colored yellow to cream with the presence of secondary roots. The average germination time is between 18 and 22 days. The substrate indicated for seed germination is on paper.

Effect of phosphate solubilizing and nitrogen-fixing bacteria on Pontianak siam citrus (Citrus ×nobilis var. microcarpa) seed germination

“…The average germination time by this treatment gave the best value among the other treatments, which was 10.45 DAP. It is reported that citrus seed's germination time is 18 and 22 days on paper substrate (Ragagnin et al 2022). Similar results were also found in the study of Naing and Zin (2013), which utilized nitrogen-fixing bacteria from the genus Azotobacter Beijerinck 1901 andAzospirillum Tarrand et al 1979 in rice plants, resulting in an increase in plant height growth on the 30th day after planting, root length on the 40th day after planting, and wet weight.…”