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Plant species where normal mode of seed set is through a high degree of cross-pollination have characteristic reproductive features and population structure. Existence of self-sterility, [ 1 ] self-incompatibility, imperfect flowers, and mechanical obstructions make the plant dependent upon foreign pollen for normal seed set.
Most seed-bearing fruits produce a hormone that suppresses germination until after the fruit or parent plant dies, or the seeds pass through an animal's digestive tract. At this stage, the hormone's effect will dissipate and germination will occur once conditions are suitable.
M. lupulinus and N. breviflora are also examples of species with a fixed number of matured seeds per fruit (in these cases, one seed), despite having multiple fertilized ovules. [ 5 ] The arrangement of ovarian vascular bundles, which transport nutrients to ovules, has been proposed as a potential influence on position-dependent probabilities ...
Vegetative reproduction involves a vegetative piece of the original plant producing new individuals by budding, tillering, etc. and is distinguished from apomixis, which is a replacement of sexual reproduction, and in some cases involves seeds. Apomixis occurs in many plant species such as dandelions (Taraxacum species) and also in some non ...
Open-pollinated varieties are also often referred to as standard varieties or, when the seeds have been saved across generations or across several decades, heirloom varieties. [2] While heirlooms are usually open-pollinated, open-pollinated seeds are not necessarily heirlooms; open-pollinated varieties are still being developed.
Tomatoes contain seeds and are therefore a fruit. Technically, the part of the plant that bears seeds for reproduction is a fruit. The other parts of the plant, like the root, leaves and stems are ...
Scientists modified bacteria to produce chymosin, which was also able to clot milk, resulting in cheese curds. [54] The first genetically modified food approved for release was the Flavr Savr tomato in 1994. [4] Developed by Calgene, it was engineered to have a longer shelf life by inserting an antisense gene that delayed ripening. [55]
1. Basil. An Iowa State University study found that tomato insect damage was lessened when planted alongside basil. Plus, it’s the perfect accompaniment to a fresh, juicy tomato! Think of it ...