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The largest seed in the world is the coco de mer, [1] [2] the seed of a palm tree. [3] It can reach about 30 centimetres (12 inches) long, and weigh up to 18 kilograms (40 pounds).
The mature seeds weighing up to 17.6 kg (29 lbs) are the world's heaviest [21] [7] [22] The seed upon germinating, produces the longest known cotyledon, up to four meters (13 feet). [23] and on occasion as long as ten meters (33 feet). [24] It is the slowest growing of all large trees, [25] although some small to medium-sized desert trees are ...
Like the Talipot and most Agaves, this is a monocarp. The life cycle from seed to seed is 80 to 150 years. The largest individuals are to be found near the abandoned village of Manallasaq, Huamanga Province, Peru. [20] Largest triplex inflorescence (Combining features of three different kinds of inflorescences). "Makua" (Harmsiopanax ingens ...
In 1769, Jean Duchemin sailed to Praslin, the second largest island in the Seychelles, on the ship L’Heureuse Marie. He loaded up with a cargo of these unusual nuts, which he later sold in Indian markets. After his trip, coco de mer nuts never again held the same extraordinary value. [5]
The type of seed dispersal evolved has been highly correlated to seed size in floras across the world. [22] In general, seeds smaller than 0.1 mg are often unassisted (wind dispersed), seeds larger than 100 mg are often dispersed by vertebrates or by water, and seeds between 0.1 and 100 mg are dispersed by a large variety of dispersal modes ...
The conifer division of plants includes the tallest organism, and the largest single-stemmed plants by wood volume, wood mass, and main stem circumference.The largest by wood volume and mass is the giant sequoia (Sequoiadendron giganteum), native to Sierra Nevada and California; it grows to an average height of 70–85 m (230–279 ft) and 5–7 m (16–23 ft) in diameter. [1]
Seed vigor is a measure of the quality of seed, and involves the viability of the seed, the germination percentage, germination rate, and the strength of the seedlings produced. [ 47 ] The germination percentage is simply the proportion of seeds that germinate from all seeds subject to the right conditions for growth.
The John Deere DB120 is an agricultural planter made by Bauer Built Mfg. in Paton, Iowa. Upon its release in 2009, it was the largest production planter in the world. It has a 120 feet (37 m) wide tool-bar and plants 48 rows which are 30 inches (760 mm) apart.