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Tropical trip seeds

Tropical Forest Seeds Use Three Strategies To Survive and Become a Tree

The oldest living seeds found on Earth germinated after resting more than 30,000 years in Arctic soils. But in the humid tropics, seeds do not last.

“A long-lived seed in the tropics is probably only a few decades old,” said Camilo Zalamea, post-doctoral fellow and lead author of a new paper in Ecology from the Smithsonian Tropical Research Institute (STRI) in Panama. “This may not seem like much time, but it is critical to reestablish trees after deforestation and ensure species’ survival.”

Seeds of tropical pioneers, trees that reestablish a forest after logging, flood, drought or fire, need strategies to overcome the two challenges every seed faces: 1) stay alive until the right conditions to grow into a plant occur, and 2) avoid being eaten by predators and decayed by soil microbes.

Although birds, bats or the wind can spread seeds from nearby forests, many of the seedlings that start a new forest emerge from seeds long buried in the soil—that is, from the soil seed bank.

“For the first time, we’re making the connection between seed dormancy—the characteristics that make it possible for a seed to wait until environmental conditions are suitable for growth, and seed defenses—the characteristics the seed uses to avoid being eaten or decayed,” said Jim Dalling, STRI research associate and professor at the University of Illinois, Urbana-Champaign. “Overall, pioneer tree species have three strategies to survive in the seed bank. Species that adopt one of these strategies share characteristics, or “seed-defense syndromes.”

“For example, some seeds may protect themselves physically by producing a very hard outer coat making it difficult for animals or microorganisms to reach the living tissues inside,” said Zalamea. “Other seeds survive because they produce chemical compounds to deter predators and pathogens. And some seeds are short-lived, investing little in physical or chemical defenses, but may be protected by special microbes they select from soil.”

Defending seeds is expensive, requiring an investment of resources from the mother tree. For 16 of the most common pioneer tree species in Panama, the research team evaluated the seeds’ physical defenses, asking: How hard is it to break the seed, how thick is the seed coat, how permeable is the seed coat and how heavy is the seed? They also evaluated the seeds’ chemical defenses, by looking at the presence and abundance of protective chemicals and testing the toxicity of seed extracts.

“We found that how much a seed invests in defending itself is directly related to the time it lasts in the soil,” said Betsy Arnold, STRI research associate and professor at the University of Arizona. “For example, seeds that are capable of persisting for long periods in the soil rely more on chemical defenses, whereas species with shorter persistence rely more on physical defenses. So this work helps resolve just how seeds can remain alive in the soil seed bank for months to years in tropical forests.”

Understanding how seeds evade or repel pests and diseases has broad application beyond tropical forests. Diseases of major seed crops—rice, wheat and maize—cost global agriculture billions of dollars a year in lost yield, and represent a significant threat to global food security. Nonetheless, remarkably little is known about how plants defend their seeds against enemies or how seed defenses align with other properties of seeds.

“In our study, we found that tropical pioneer seeds defend themselves using three different dormancy-defense syndromes; we hope that this information can be used to develop more effective practices for crop production and weed management, restoring natural vegetation and to generate a better understanding of natural plant community dynamics,” said Adam Davis, a scientist at the U.S. Department of Agriculture.

This research was funded by grants from the U.S. National Science Foundation (NSF DEB-1120205, DEB-1119758) and Simons Foundation.

The Smithsonian Tropical Research Institute, headquartered in Panama City, Panama, is a unit of the Smithsonian Institution. The Institute furthers the understanding of tropical biodiversity and its importance to human welfare, trains students to conduct research in the tropics and promotes conservation by increasing public awareness of the beauty and importance of tropical ecosystems. Website. Promo video.

Tropical Seeds Company

Tropical Seeds Company is a spanish seedbank created in the Canarias Archipelago – latitude 28 ° N – in 2008, with the main aim of sharing the passion for landrace cannabis genetics, particularly African strains. This continent is so vast that offers a very diversified range of plants from one area to another.

The favorable growing climate of this region, with excellent temperature, light intensity and photoperiod, allowed from the beggining to work throughout the year sativa lines as interesting as Congo Pointe Noire, Ciskei (South Africa), Swazi, Durban, Zambia.

This interest in the preservation of such original sativa plants quickly aroused the attention of the cannabis community, from amateurs to professionals, since there was a collaboration between Tropical Seeds Company and Cannabiogen seedbank through a Pakistan Chitral Kush’06 clone, released by his breeder Kaiki to Aeros team. Thus, this clone allowed enriching the Indica-Sativa hybrids seed collection to bring a little color and shorten the flowering time of Sativa landraces.

Alchimia Grow Shop is pleased to propose here a selection of the most representative marijuana varieties of The Tropical Seeds Company, TTSCo as regular seeds.

Dandy Dance – Tropical Seeds Company

Dandy Dance from Tropical Seeds Company is a mostly Indica, CBD-rich cannabis genetics with delicious taste and potent effect. Already available in Alchimia Grow Shop. This strain comes from the cross between the Lavender Baron Dandy cut and the Dan [. ]

  • 3 seeds (Product sold out) 30.00€ 21.00€
  • 5 seeds 38.00€ 26.55€

Afrokush – Tropical Seeds Company

Afrokush from Tropical Seeds Co. is a feminized marijuana genetics coming from the cross between a Swaziland sativa strain and the Pakistan Chitral Kush variety . This 50% Indica – 50% Sativa cannabis hybrid combines the vigour, complex aromas and cr [. ]

  • 3 seeds (Product sold out) 32.00€
  • 5 seeds (Product sold out) 40.00€ 28.00€

Heaven’s Gate CBD – Tropical Seeds Company

Alchimiaweb presents here Heaven’s Gate CBD, a Dancehall Mapetit x Pennywise hybrid developed by Tropical Seeds. It is actually a Dancehall BX but with high CBD content. Thus, Heaven’s Gate CBD is a mainly medicinal plant that grows vigorous and dev [. ]

  • 3 seeds (Product sold out) 30.00€ 21.00€
  • 5 seeds (Product sold out) 38.00€ 26.55€

Bisho Purple – Tropical Seeds Company

Alchimia presents here Bisho Purple, a 50% Sativa – 50% Indica F1 hybrid sold on feminized seed form by the Tropical Seeds Company, bred by crossing the Ciskei variety with Pakistan Chitral Kush. Bisho Purple often shows phenotypic variations, with [. ]

  • 3 seeds (Product sold out) 32.00€
  • 5 seeds (Product sold out) 40.00€

Ciskei Regular – Tropical Seeds Company

Ciskei is one of ten independent regions of South Africa declared autonomous territory from 1981 to 1994, and in this place the population grows in a significantly way a little sativa in the mountains of the Drakensberg area, at an altitude of 1500-2 [. ]

  • 10 seeds (Product sold out) 60.00€

Durbakistan – Tropical Seeds Company

Durbakistan is a F1 hybrid distributed on feminized seed form by Tropical Seeds. This Durban x Pakistan Chitral Kush cross is ripe after 75-80 days of flowering, offering large yields with Sativa effect. Now available in Alchimia Grow Shop. The Durb [. ]

  • 3 seeds (Product sold out) 32.00€
  • 5 seeds (Product sold out) 40.00€

Durban Punch – Tropical Seeds Company

Durban Punch is a strain created by Tropical Seeds , a 100% Sativa with super stimulant and euphoric effect with South African origin. Now available in Alchimia Grow Shop. This hybrid between Durban and Ciskei BX1 grows fast and vigorously, developi [. ]

  • 10 seeds 58.00€

Old Congo – Tropical Seeds Company

Old Congo is a Sativa genetics Cannabis, plant of the most stimulant and entertaining of the market. To create this devastating hybrid Tropical Seeds Company brought together two pure genetics of excellent quality, the mystical Congo Pointe Noire, [. ]

  • 10 seeds (Product sold out) 58.00€

Red Afro – Tropical Seeds Company

Red Afro from Tropical Seeds Co. is a feminized cannabis variety created to provide the Swazi sativa strain with a structure more close to the Indica family, a quicker flowering period and denser buds. This has been achieved thanks to crossing this S [. ]

  • 3 seeds (Product sold out) 30.00€
  • 5 seeds (Product sold out) 38.00€

Smooth Smoke – Tropical Seeds Company

The Smooth Smoke variety from Tropical Seeds Company is a mostly Indica cannabis hybrid created from Pakistan Chitral Kush genetics and a Sativa landrace strain coming from Nepal. Get it now among Alchimiaweb’s feminized seeds collection!Smooth Smoke [. ]

  • 3 seeds (Product sold out) 30.00€
  • 5 seeds (Product sold out) 38.00€

Zambia – Tropical Seeds Company

Zambia owes its preservation to the African Seeds seed bank, now defunct, which selected and reproduced it after it is imported from Zambia, where cannabis Sativa genetics are heavily cultivated in the plains known as the copper belt. The Tropical S [. ]

  • 10 seeds (Product sold out) 60.00€

Smooth Smoke Reg – Tropical Seeds Company

Alchimia presents the Regular version of the Smooth Smoke variety from the Tropical Seeds Company, a Pakistan Chitral Kush x Nepal Highland hybrid, mostly Indica and created to offer large harvests of purple buds with floral and fruity taste and a re [. ]

Tropical Plant Seeds

While the tropical climate is a true plant paradise, plant lovers from temperate or colder climates can also grow plants from the tropics and subtropics. They are often very good house plants and can be grown from seeds.

Winter Cherry (Withania somnifera)
Caltrops (Tribulus terrestris)
Saw palmetto, Sabal (Serenoa repens)
Kougoed, Kanna (Sceletium tortuosum)
Indian snakeroot sarpagandha (Rauvolfia serpentina)
Blue passion flower (Passiflora caerulea)
Rice ‘Arborio Bianco’ (Oryza sativa)
Mucuna (Mucuna pruriens)
Loofah (Luffa cylindrica)
Lion’s tail (Leonotis leonurus)
Water spinach (Ipomoea aquatica)
Morning glory ‘Heavenly Blue’ (Ipomoea tricolor)
Mate (Ilex paraguariensis)
Desert Thorn-Apple (Datura discolor)
Devil’s trumpet (Datura metel)
Toloache, White Moonflower (Datura inoxia)
Tamarillo/ Tree Tomato (Solanum betaceum)
East-Indian Lemon Grass (Cymbopogon flexuosus)
Caigua, slipper gourd (Cyclanthera pedata)
Melon ‘Blenheim Orange’ (Cucumis melo)

It is thus always worthwhile to collect a few seeds when you’re on vacation in a tropical land and then try sowing them at home. In case you didn’t bring any: we also offer a nice assortment of tropical plant seeds which fill your home with special flowers and scents.

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