Profil organizatora

There is a close relationship between the heterozygosity of the genotype of the vegetative line varieties and the source of the crop varieties. The heterozygosity of the self incompatible varieties such as pear and sweet potato is greater than that of the self compatible peach and potato. China is an ancient garden country with rich flower resources and various varieties. The scale of flower export and domestic sales is expanding day by day. In order to achieve ideal economic benefits and ornamental effects of flowers, it is particularly important to study the prevention and control of flower diseases and pests. The prevention and control methods of flower diseases and pests are diverse, which can be summarized into: cultivation technical measures, physical and mechanical prevention and control, plant quarantine, biological prevention and control, chemical prevention and control and other measures. Stinging moths, also known as itchy peppers, spiny caterpillars and spicy caterpillars, occur almost all over China. Eliminating the bud type of deterioration is an important measure to maintain the purity of vegetative line varieties. Budding selection breeding is another important feature of vegetative line breeding. Main control methods: clean the garden: remove overwintering weeds and eliminate overwintering eggs. The larvae are covered with toxic hairs, which also endanger human skin. There are mainly pests such as Cnidocampa flavescenswalker, PARASA lepidacramer, parasconsociawalker, thoseasinensis walker, Setora postorrmta Hampson and so on. In recent years, it has harmed peony, peony, Begonia pedunculata, white orchid, rose, rose, gardenia, lotus, Bauhinia, cherry blossom, plum blossom, osmanthus, pomegranate, etc. Morphological characteristics: yellow thorn moth: adult wings are orange yellow, wing spread is about 35mm, the half of the front wing is yellowish brown, there are two dark brown twills from the top corner to the rear edge, and the rear wing is grayish yellow. The egg is flat, oval, transparent and light yellow. The cricket is oval, about 13mm long, yellowish brown. Others are brown edged green thorn moth: the body wing is green, the wing length is about 40mm, the base of the front wing is dark brown, the outer edge is grayish yellow, and the rear wing and abdomen are grayish yellow. The egg is flat, oval and dark yellow. The larva is yellowish green with a length of 28ram. When it is old, it has two rows of orange red bristles on the back, and four black tumor like protrusions on the tail. The cocoon shell is hard and adult; larva; The big yellow bag moth on the branches is also known as rhombus moth, debt avoiding moth, skin worm, Hanging Ghost, etc. The egg is oval, raised on the back, yellowish green. The larvae are 21~26ram long, flat and emerald green. The cocoon shell is thick and light dark brown. Mulberry Brown thorn moth: its adult wings are dark brown, with a wing spread of about 45mm, and there are two brown twills on its front wings. The egg is flat, oval and yellow. The first instar larvae are gregarious, and the adult moths have phototaxis. Control method: light trapping: Hang black light to trap adult moths. Manual cocoon catching: digging insect cocoons in winter and spring.