The scientific name of Cymbidium spp. is a perennial herb of Orchidaceae. Including Jianlan, multi-flower blue, mountain blue three. Orchid roots, leaves, flowers, fruits can be used as medicine. With Ziyin Qingfei, Huatanzhike effect. Zhejiang, Shanghai, Jiangsu, Anhui, Jiangxi, Hubei, Hunan, Sichuan, Guizhou, Yunnan, Guangdong and Fujian have all been cultivated.
Symptoms mainly affect the leaves and fruits. Leaf disease usually occurs at the leaf tip or leaf margin. It is a round, round to oval, dark brown spot. It gradually expands. The lesion is light brown or off-white in the center, dark brown to dark brown on the edges, and the disease is healthy. The extension is limited by the veins, the lesions on the tip of the leaf are triangular, and the leaf edges are semicircular. The fruit is infected with shuttle-shaped dark brown spots, and the late diseased part can produce small black spots, which are pathogenic bacterial conidia discs.
The pathogen G10merella cingulata (Stonem.) Spald. et Schrenk called a small cluster of shells belonging to the phylum Ascomycotina. The anamorphic state is Colletortrichμm g10eosporioides Penz. Colletotrichum gloeosporioides is a fungus belonging to the genus Deuteromycotina. For morphological features, see Anthrax.
Transmission routes and pathogenic conditions The pathogens mainly live through winter in the diseased leaf tissue of the mycelium, and the winter can also be contaminated in the south. In April of the following year, mycelial reactivation in the diseased part caused a new lesion with reddish-brown growth in the neighboring area. The conidia produced in the lesions spread by wind and rain. When the leaves have water film or water droplets, the conidia germinate. The wounds invade and become ill after 2-3 weeks of incubation. Temperature of 20 to 29 °C, relative humidity higher than 80% for the disease to expand. The old leaves in Shanghai began to develop at the beginning of April. During the rainy season, the disease spread rapidly and gradually ceased after July. New leaves mostly began to develop in August, and it was rainy or heavily planted.
Control methods (1) Strengthen cultivation management. The nursery or greenhouse shaded by shading nets, airy and light-transmitting, completely cut off the diseased leaves on the plants in winter, cleared the fallen leaves on the ground, and burned in a concentrated manner. (2) Early onset of spraying 25% carbon tetrachloride wettable powder 500 times or 36% thiophanate-methyl suspension 600 times, 25% benomyl EC 800 times. About once every 10 days, continuous control 2-3 times.
Our Plastic Pipette includes serological pipette and disposable Transfer Pipette.
The serological pipette(Pipette Tip) is made of imported high quality polystyrene. Novel aspiration area design can fit most of the pipettors on the market. Mainly used for accurate measure or transfer certain volume liquid and is widely employed in the field of cell cuture, bacteriology, clinical research, etc. Six capacity 1ml, 2ml, 5ml, 10ml, 25ml and 50ml are available.
The disposable transfer pipette is made of superior LDPE material, non-toxic, adapted to draw, transfer or carry for small volume liquid. The soft material make the pipette can be bent with a certain angle, which is convenient for drawing or adding liquid in irregular or micro container. Individual pack or bulk pack are available.
Disposable Pipette,Plastic Pipette,Transfer Pipette,Micro Pipette,Pipette Tip
Hebei Orient Imp. & Exp. Co. Ltd. , https://www.orientmedcare.com