SEED GERMINATION AND SEEDLING ESTABLISHMENT OF CHERIMOYA (ANNONA CHERIMOLA MILL.) AT DIFFERENT TEMPERATURES
| Autor: | H. Khettache, Abdenour Kheloufi, Lahouaria Mounia Mansouri |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Horticulture
010504 meteorology & atmospheric sciences Germination Seedling 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Mill 04 agricultural and veterinary sciences Annona cherimola Biology biology.organism_classification 01 natural sciences 0105 earth and related environmental sciences |
| Zdroj: | Cercetari Agronomice in Moldova. 53:185-194 |
| ISSN: | 2067-1865 0379-5837 |
| DOI: | 10.46909/cerce-2020-016 |
| Popis: | Cherimoya (Annona cherimola Mill.) has an exceptional flavor and aroma, which makes it a fruit with great potential. However, little is known about its propagation by seeds. According to the scientific literature, the germination of cherimoya seeds is affected much more by external conditions than by internal conditions. Germination of cherimoya variety ‘Concha Lisa’ were tested for germination at constant temperatures of 25, 30, 40°C, and at room temperature, varying from 20-25°C, coupled with total darkness. Seeds were sown in Petri dishes (0.8% agar water), for 25 days of incubation. The kinetics of germination was determined according to five closely related parameters, viz. final germination percentage (FGP), mean germination time (MGT), coefficient of velocity of germination (CVG), time to 50% germination (T50) and seedling length (SL). The temperature of 30°C was found optimally suitable with 70.8% FGP, 17.5 days MGT and 3.91 cm SL, while the room temperature of 20-25°C slightly improved germination with only 25% FGP. Furthermore, significant decrease in FGP and SL was observed at 25°C and 40°C of temperature in comparison to 30°C. The analysis also revealed that cherimoya seed germination, day 10-15 after seed sowing is suitable for final counts. An overview on the emergence of cherimoya seedlings, during a 12-week period in pots is presented. |
| Databáze: | OpenAIRE |
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