ВЛИЯНИЕ ТЕМПЕРАТУРЫ И РЕГУЛЯТОРА РОСТА НА ПРОРАСТАНИЕ СЕМЯН ИЗ ПРИРОДНЫХ ПОПУЛЯЦИЙ ВИДОВ РОДА TULIPA L. (LILIACEAE)
| Autor: | S. V. Ubushaeva, Nina Tserenovna Lidzhieva, Marianna Grachevna Aduchieva, Kermen Mikhailovna Garyaeva, Aleksandra Sergeevna Ochirova |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
education.field_of_study
Tulipa biflora media_common.quotation_subject Population food and beverages Biology General Biochemistry Genetics and Molecular Biology Bulb Horticulture Germination Positive temperature Dormancy Reproduction General Agricultural and Biological Sciences education Sprouted Seeds media_common |
| Zdroj: | Siberian Journal of Life Sciences and Agriculture. 12:11 |
| ISSN: | 2658-6657 2658-6649 |
| Popis: | Background. Identification of the effect of temperature and growth regulator on seed germination from species populations of Tulipa biflora and T. biebersteiniana, growing in natural plant communities. Materials and methods. The research material was the collection of seeds of two species: T. biflora – from 8 natural populations, T. biebersteiniana – from 5 natural populations within the Republic of Kalmykia. To determine germination, GOST 12038-84 was used, adapting the studied types of bulb ephemeroids. Results. It was revealed that the germination period of all germinating seeds from the moment of their soaking and the appearance of newly sprouted seeds in the control was 18–30 days in T. biebersteiniana in only four populations; in T. biflora in six populations – 15–23 days; in some populations, germination was not noted. Under the influence of 0.001% solution of heteroauxin and temperature +2˚C separately and with their combined action in populations of T. biflora, the germination period of all germinating seeds increased by 1–2 days, in populations of T. biebersteiniana it decreased by 2–10 days. In seeds from populations of both species in the control average germination is equal to: T. biflora 3.5%, T. biebersteiniana – 4.4%. In T. biflora seed germination on the background of 0.001% heteroauxin solution and temperature +2˚C increased compared to the control 6.7 and 16.9 times, respectively, in T. biebersteiniana-2.1 and 5.3 times, respectively. Combined exposure to low temperatures and heteroauxin increased seed germination in T. biflora populations by an average of 23.06%, in T. biebersteiniana populations by 13.7% compared to control. Conclusion. Seeds from natural populations of two species of Tulipa biebersteiniana and T. biflora the next year after reproduction they have low seed germination – at the level of 3,5–4,4%. When using a low positive temperature of +2°C and a 0,001% aqueous solution of heteroauxin for stratification of seeds separately and with their combined action, it was revealed that the influence of the first factor was more effective for removing the seeds of both species from dormancy. |
| Databáze: | OpenAIRE |
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