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In biology, the BBCH-scale for leafy vegetables forming heads describes the phenological development of leafy vegetables forming heads, such as cabbage, chinese cabbage, lettuce and endive, using the BBCH-scale. The phenological growth stages and BBCH-identification keys of leafy vegetables forming heads are:
Many salad green seeds germinate when the temperature is between 50-70°F. Check the seed packet to know the exact range each type of salad green needs. ... Loose leaf lettuce can take longer, up ...
From there, it was brought north to Central Europe, where it was modified into butterhead lettuce and other varieties. [22] [23] Lettuce appears in many medieval writings, especially as a medicinal herb. Hildegard of Bingen mentioned it in her writings on medicinal herbs between 1098 and 1179, and many early herbals also describe its uses.
For seed physiologists and seed scientists "germination rate" is the reciprocal of time taken for the process of germination to complete starting from time of sowing. On the other hand, the number of seed able to complete germination in a population (i.e. seed lot) is referred to as germination capacity.
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]
In comparing different treatments, genotypes or species, the simplest type of growth analysis is to evaluate size of plants after a certain period of growth, typically from the time of germination. In plant biology, size is often measured as dry mass of whole plants (M), or the above-ground part of it.
Jessica Simpson’s first single, "Use My Heart Against Me," drops from her new EP: Nashville Canyon: Part 1 - this week — just a month after announcing the end of her 10-year marriage to Eric ...
Celtuce (/ ˈ s ɛ l t ə s /) (Lactuca sativa var. augustana, [3] [4] [5] angustata, or asparagina), also called stem lettuce, [6] celery lettuce, asparagus lettuce, [7] or Chinese lettuce, is a cultivar of lettuce grown primarily for its thick stem or its leaves. It is used as a vegetable.