Non-deep simple morphophysiological dormancy in seeds of Cuminum cyminum L

Publication date: Available online 8 September 2019Source: Journal of Applied Research on Medicinal and Aromatic PlantsAuthor(s): Elias Soltani, Seyed Mohammad Mahdi Mortazavian, Soheila Faghihi, Gholam Ali AkbariAbstractSeeds of 14 Iranian and one Indian cumin landraces were grown to produce freshly matured seeds. Freshly matured seeds were tested for germination, embryo and seed size, fresh and dry weights. Fresh seeds were after ripened at the room temperature for 4 or 20 months and were tested for germination. The effects of cold stratification, gibberellic acid (GA3), and incubation temperature investigated on germination of three landraces. Results indicated that the highest embryo length: seed length (E:S) ratio was observed in Qaen (0.33), and the lowest ratios belonged to Heydarabab (0.22) and Jat (0.23) at the maturity. Cumin seeds germinated almost>80% from 5 to 20 °C after 20 months of dry storage. Germination of cumin seeds reached to the highest value in 8 weeks stratified (at 2 °C) seeds when seeds incubated at 15 °C. GA3-soaked seeds had significantly higher germination percentage and rate compared with unsoaked seeds. Therefore, the physiological part of dormancy released during dry storage (after ripening) or cold stratification. GA3 improved the rate of germination and its capacity. The embryos grew well from 5 to 20 °C when they were fully after ripened. Thus, seeds of cumin must have non-deep simple of morphophysiological dormancy.
Source: Journal of Applied Research on Medicinal and Aromatic Plants - Category: Complementary Medicine Source Type: research