Sclerotinia sclerotiorum of tulips
Symptoms: the disease harms tulip seedlings and bulbs. In the early stage of the disease, the scales outside the susceptible bulb had soft rot, and many white silk-like mycelia were produced on the soil surface near the disease part. In the later stage of the disease, many sclerotia were formed, the sclerotia was round or irregular, it was white at first, and then turned brown to black. The internal color is lighter and the tissue is compact. After the seedlings were infected, the leaflets died as soon as they were born.
Pathogen: the pathogen is rotten Sclerotinia sclerotiorum (ScterotiumtuliparumKleb), which belongs to the subphylum Trichoderma, Trichoderma and non-spore order fungi.
Disease regularity: the pathogen overwintered in the soil with seedling nuclei. Under the condition of high temperature and high humidity, the disease occurred seriously.
Prevention and treatment: when collecting in ①, remove the diseased bulbs. ② storeroom should be ventilated and the temperature should be kept below 20 ℃.
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Post-anthesis Propagation of Tulip
Tulip belongs to the lily family and is a bulbous herbaceous flower. The flowering period of tulips is from March to May every year, but if the planting technology is not up to the requirements, it will be difficult to blossom in March to May the following year. Therefore, the reproductive management of tulips after flowering is particularly important. After the tulip blossoms, the underground part of the new bulb develops rapidly, and the mother bulb disappears as a seed bulb. So the tulips should immediately cut off the pedicels and plant the leafy bulbs in the pot (those with a small courtyard can also be planted on the ground). When planting, you should first add base fertilizer, preferably with bean cake crumbs and bones
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Classification of tulips
There are many varieties of tulips, about ten thousand kinds. Two main classification methods are introduced: 1. According to flower type change points. It can be divided into cup type: corolla is cup-shaped, representative varieties are country tulips, Darwin tulips and hybrid Darwin tulips; bowl type: corolla is shallow plate-shaped, flowers are many and small, representative varieties are water lily tulips; lily type: petal apex is pointed, corolla is like lily, representative varieties are lily tulips; bulb type: corolla is spherical, it is a double petal species in country tulips and hybrid Darwin tulips. 2. Early and late flowering.
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