Germination of Chloroleucon dumosum (Benth) seeds under different light and temperature regimes

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DOI: 10.1007/s42535-025-01416-6
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Keywords: Germination, Thermal treatment, Arapiraca, Photoblastism, Temperature


Abstract

Studies on the germination of native species are crucial for understanding the physiological requirements of seeds. Thus, the aim was to evaluate the germination of Chloroleucon dumosum seeds under different light conditions (absence and presence) and different temperatures (20 ºC, 20–30 ºC, and 30 ºC), with 4 replicates of 25 seeds each. Tests were conducted in germination chambers with a 12-hour photoperiod. After 12 days, the following variables were analyzed: height, root length, hypocotyl diameter, fresh and dry weight of the root and shoot. Finally, biomass allocations and the root/shoot ratio were calculated. Based on these data, biomass allocations and the root/shoot ratio were calculated, and the data were subjected to analysis of variance, and means were compared by Tukey’s test. It was identified that the seeds are classified as neutral photoblastic, as they germinated in both the presence and absence of light, expressing their maximum physiological potential at an alternating temperature of 20–30 ºC.

Germination, Thermal treatment, Arapiraca, Photoblastism, Temperature


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Author Information

Federal Rural University of Pernambuco, Recife, Brazil