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An English oak leaf (Quercus robur) has a leaf of perhaps 20 cm2 and therefore a weight of about 0.67 g per (stalk-less)leaf. A horse chestnut (Aesculus hippocastanum) has a leaf area of (conservatively) 600 cm2, hence about 20g.
A method for screening a high quercetagetin tea chrysanthemum variety
This invention discloses a screening method for high luteolin-containing chrysanthemum tea varieties. During the peak flowering period, multiple healthy, disease-free plants of each variety are randomly selected, and their stem diameter, leaf weight, and number of petals are measured and averaged. The value is calculated using the following formula: Y = -0.387 + 0.268X6 + 0.001X7 + 0.02X3; where X3 is stem diameter, X6 is leaf weight, and X7 is the number of petals. The larger the Y value, the higher the luteolin content of the variety. This method can quickly and initially screen high-content varieties, has low identification costs, and is simple to operate. It is a rapid screening method suitable for early breeding stages and large-scale field evaluation.
Owner:QINGHAI UNIVERSITY