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The jackfruit (Artocarpus heterophyllus) [6] is a species of tree in the fig, mulberry, and breadfruit family (). [7] The jackfruit is the largest tree fruit, reaching as much as 55 kg (120 pounds) in weight, 90 cm (35 inches) in length, and 50 cm (20 inches) in diameter.
Red mangrove seeds germinate while still on the parent tree. In plants, vivipary occurs when seeds or embryos begin to develop before they detach from the parent. Plants such as some Iridaceae and Agavoideae grow cormlets in the axils of their inflorescences. These fall and in favourable circumstances they have effectively a whole season's ...
Pollination of fruit trees is required to produce seeds with surrounding fruit. It is the process of moving pollen from the anther to the stigma, either in the same flower or in another flower. Some tree species, including many fruit trees, do not produce fruit from self-pollination, so pollinizer trees are planted in orchards.
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Under natural conditions non dormant seeds released late in the growing season wait until spring when the soil temperature rises or in the case of seeds dispersed during dry periods until it rains and there is enough soil moisture. Seeds that do not germinate because they have fleshy fruits that retard germination are quiescent, not dormant. [11]
Trillium grandiflorum in the foreground and the smaller Thalictrum thalictroides in the background are both spring ephemerals of North American deciduous forests. An ephemeral plant is a plant with a very short life cycle or very short period of active growth, often one that grows only during brief periods when conditions are favorable.
Most seeds are not affected by light or darkness, but many photoblastic seeds, including species found in forest settings, will not germinate until an opening in the canopy allows sufficient light for the growth of the seedling. [2] Scarification mimics natural processes that weaken the seed coat before germination. In nature, some seeds ...
In climates that are warm all year long, perennials may grow continuously. [12] Annuals which complete their life cycle in one growing season, in contrast with perennials, produce seeds as the next generation and die; [13] the seeds may survive cold or dry periods or germinate soon after dispersal depending on the climate.