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Generally a temperature rise, above usually 10 to 15 °C above ambient, can be considered heat shock or heat stress. Heat tolerance is broadly defined as the ability of the plant tolerate heat – means that grow and produce economic yield under high temperatures.
Hardiness of plants is defined by their native extent's geographic location: longitude, latitude and elevation. These attributes are often simplified to a hardiness zone . In temperate latitudes, the term most often describes resistance to cold, or "cold-hardiness", and is generally measured by the lowest temperature a plant can withstand.
Plant stress research looks at the response of plants to limitations and excesses of the main abiotic factors (light, temperature, water and nutrients), and of other stress factors that are important in particular situations (e.g. pests, pathogens, or pollutants). Plant stress measurement usually focuses on taking measurements from living plants.
Growing degrees (GDs) is defined as the number of temperature degrees above a certain threshold base temperature, which varies among crop species. The base temperature is that temperature below which plant growth is zero. GDs are calculated each day as maximum temperature plus the minimum temperature divided by 2, minus the base temperature.
Jul. 18—People and animals aren't the only ones who suffer from extreme and extended heat waves. Plants are stressed, as well, and for those who cultivate gardens or trees, protecting plants ...
The secretion by a plant of biochemicals which influence the growth and reproduction of nearby plants. allopatric Having geographically separate, non-overlapping ranges of distribution. [17] Contrast sympatric. alternate 1. (adj.) (of leaves or flower s) Borne singly at different levels along a stem, including spiralled parts. Contrast opposite. 2.
Adult plant resistance (APR) is a specialist term referring to quantitative resistance that is not effective in the seedling stage but is effective throughout many remaining plant growth stages. [ 43 ] [ 44 ] [ 42 ] The difference between adult plant resistance and seedling resistance is especially important in annual crops . [ 45 ]
The Fort Myers-based company owns 53,371 acres (21,598.5 hectares) across eight counties in Florida and 48,700 acres (19,708 hectares) of oil, gas and mineral rights in the state.