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  2. Seed dormancy - Wikipedia

    en.wikipedia.org/wiki/Seed_dormancy

    True dormancy or inherent (or innate) dormancy is caused by conditions within the seed that prevent germination even if the conditions are favorable. [7] Imposed dormancy is caused by the external conditions that remain unsuitable for germination [8] Seed dormancy can be divided into two major categories based on what part of the seed produces dormancy: exogenous and endogenous. [9]

  3. Germination - Wikipedia

    en.wikipedia.org/wiki/Germination

    Germination of seedlings raised from seeds of eucalyptus after three days of sowing. In agriculture and gardening, the germination rate describes how many seeds of a particular plant species, variety or seedlot are likely to germinate over a given period. It is a measure of germination time course and is usually expressed as a percentage, e.g ...

  4. Dormancy - Wikipedia

    en.wikipedia.org/wiki/Dormancy

    Dormancy should not be confused with seed coat dormancy, external dormancy, or hardheadedness, which is caused by the presence of a hard seed covering or seed coat that prevents water and oxygen from reaching and activating the embryo. It is a physical barrier to germination, not a true form of dormancy (Quinliven, 1971; Quinliven and Nichol ...

  5. Pyrenochaeta lycopersici - Wikipedia

    en.wikipedia.org/wiki/Pyrenochaeta_lycopersici

    The corky root rot became one of the most serious diseases of tomato because growers used the inoculated soil without any type of disease management. [10] For instance, this occurred in Sweden when monoculture of tomatoes resulted in a yield reduction of 30-40%.

  6. Seed - Wikipedia

    en.wikipedia.org/wiki/Seed

    The germination percentage is simply the proportion of seeds that germinate from all seeds subject to the right conditions for growth. The germination rate is the length of time it takes for the seeds to germinate. Germination percentages and rates are affected by seed viability, dormancy and environmental effects that impact on the seed and ...

  7. Parasitic plant - Wikipedia

    en.wikipedia.org/wiki/Parasitic_plant

    For germination to occur, seeds need to be quite close to the host plant. [13] [14] For example, the seeds of witchweed (Striga asiatica) need to be within 3 to 4 millimeters (mm) of its host to receive chemical signals in the soil to trigger germination. This range is important because Striga asiatica will only grow about 4 mm after ...

  8. Vivipary - Wikipedia

    en.wikipedia.org/wiki/Vivipary

    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 ...

  9. BBCH-scale (solaneous fruit) - Wikipedia

    en.wikipedia.org/wiki/BBCH-scale_(solaneous_fruit)

    1 For tomatoes with determinate stem growth, paprika and aubergines. In tomatoes with indeterminate stem growth and only one sympodial branch at the corresponding axis, the apical side shoot formation occurs concurrently with the emergence of the inflorescence (Principal growth stage 5), so that the coding within principal growth stage 2 is not necessary

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