Phosphorus deficient leaves are slow, leaves are small, dark green. The lower leaves and petioles of the lower leaves are purplish red, and the roots are slowed down. Poor resistance to stress, not normal precocity. The grain is not full, the yield is reduced, and the oil yield is low.
Potassium-deficient plants are short. Initially the leaves were dark green and the leaf edges began to curl down, even worse in dry and hot weather. In the future, when potassium deficiency is severe, white spots appear on the outer edge of the leaves, and the old leaves dry before maturity. The pods are small and the yield is reduced.
There are purple-red plaques on the middle and lower leaves of magnesium deficiency, and the leaves are yellow-purple and green-purple.
The sulfur-deficient plants are short, the leaves are light green, and the back of the leaves turns red. The leaves are erect or curled, the growth period is late, and the flowers are small and small. The tip of the pod is dry and about half of the seeds are stunted.
Boron-deficient plants grow slowly and are dwarfed. The stem is long and thick, and the wood is damaged. In the case of mild boron deficiency, blue-violet spots appear between the veins, and purple plaques are produced on the edge of the old leaves. Malformed buds and atrophic flowers appear. The top is continuously flowering, the flowering period is prolonged, the pods are few, and the fruit is not strong. It is commonly called "flowers and not real". Rational application of various fertilizers can increase rapeseed yield and income.
Sterile Petri Dishes from YongYue medical carries a complete line of contact plates, sterile, square (with a grid) and absorbent pad Petri dishes, cell spreaders and spatulas. Please contact us if you need additional product specifications. Two of our most popular lab dish products are standard petri dish and 3 compartment petri plate.
Sterile Agar Petri Dish
YongYue® petri dishes are offered in a variety of shapes and sizes for your everyday research needs. YongYue® manufactures optically clear plastic petri dish which are precision-molded from biomedical grade polystyrene for Cell Culture. Dishes are packed in heavy-wall polyethylene sleeves to ensure product integrity. YongYue® petri dishes have many applications including cell culture, growing bacteria and growing yeast.
Clear plastic disposable petri dishes of standard depth (15mm). Supplied in sterile packs. Will deform on autoclaving. Triple Vented. Also suitable for the temporary housing of small invertebrates during collection, or for distributing small chemical samples in class.
Diameter: 90mm
Depth: 15mm
Pack of 20
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