| CHARACTERIZATION OF SEEDS AND PLANT DEVELOPMENT OF Oenothera rosea L'Her. ex Ait IN GREENHOUSE
Keywords:
crecimiento vegetativo, inflorescencias, latencia, semillas silvestres, yemas florales.Abstract
Oenothera rosea L´Hér. ex Ait. is a wild plant of the Onagraceae family. There is interest in its cultivation due its therapeutic properties. The objective in this study was to characterize O. rosea seeds and their plant development in a greenhouse environment, up to the end of their reproductive stage. The tested hypothesis was that regardless of the collection site and seed size variability, plants of O. rosea actively grow when developed under sheltered conditions. The assessed seeds were collected from four sites from the state of Veracruz. The experimental design consisted in generalized randomized blocks, with 10 repetitions (15 seeds per experimental unit) to assess germination and seedlings emergence, and four plants per sampling, every 10 days, for 110 days to evaluate growth and biomass of the plant structures. The plants were grown, in 500 mL containers, in peat moss, in a greenhouse, from July to September 2018. The mean seed biomass ranged between 0.0027 and 0.0091 g. Between 10 and 70% of seeds did not germinate depending on the seed size and the collection site. After 110 days after sowing plants originated from large seeds were higher (up to 35%), produced more flower buds (60%), number of mature capsules (double) and longer roots (27.2%) compared to plants from small seed plants. In contrast, stem diameter (at substrate height) and leave number, width and length were not related to the seed size. Oenothera rosea plants develop and grow vigorously in greenhouse conditions; all plant tissues are available 100 days after plant cultivation.
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