Silkworm seedlings capable of highly resisting bacterial wilt and breeding method of silkworm seedlings

Abstract

The invention provides silkworm seedlings capable of highly resisting bacterial wilt and a breeding method of the silkworm seedlings. The breeding method specifically comprises the following steps: selecting silkworm seedling plants with good growth vigor in a bacterial wilt disease region as propagation mother plants; cultivating a plurality of second-generation mother plants through a vegetative propagation method; planting the second-generation mother plants in the disease region and selecting the second-generation mother plants with the good growth vigor; cultivating third-generation mother plants through the vegetative propagation method; planting the third-generation mother plants in the disease region and selecting the third-generation mother plants with the good growth vigor; then cultivating fourth-generation mother plants through the vegetative propagation method; and finally, carrying out the vegetative propagation on the fourth-generation mother plants to obtain the silkworm seedlings capable of highly resisting the bacterial wilt. With the adoption of the silkworm seedlings capable of highly resisting the bacterial wilt and the breeding method of the silkworm seedlings, the new species of mulberries which are capable of resisting the bacterial wilt and have a high-yield and high-quality performance are cultivated. Meanwhile, the cultivated silkworm seedlings have extremely high stress resistance.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to silkworm seedlings with high bacterial wilt resistance and a breeding method thereof. Background technique [0002] Mulberry (Morus alba L), deciduous tree or shrub, 3-10 meters high or higher, diameter at breast height up to 50 cm, crown obovate, bark thick, gray, with irregular shallow longitudinal fissures; winter buds reddish brown , ovate, bud scales imbricate arrangement, taupe, with fine hairs; branchlets with fine hairs. Alternate single leaves, broadly ovate, 5-15 cm long, 5-12 cm wide, apex acute, acuminate or blunt, base round to shallow cordate, margin serrated and blunt, young leaves often shallow Cleft, deep-lobed, bright green on the surface, glabrous, with sparse hairs along the veins on the back, tufts in the axils of the veins; petiole 1.5-5.5 cm long, pilose; stipules lanceolate, caducous, densely hard outside hair. [0003] In my country,...

AI Technical Summary

Problems solved by technology

[0009] The emergence of mulberry bacterial wilt has seriously affected the yield of mulberry leaves, seriously affected the enthusiasm of farmers for planting mulberry and raising silkworms, seriously affected and restricted the development of the rural silkworm economic industry