2 results about "Selfing" patented technology

The application relates to a method for efficiently creating a far-cross hybrid between Chinese cabbage and the genus Eruca, which comprises the following steps: taking the selfing line 'ASTRO' of the genus Eruca as a male parent, wherein the selfing line 'ASTRO' has excellent properties such as drought and flood resistance, disease resistance, salt and alkali tolerance, and the like; taking an excellent Chinese cabbage material '72049' as a female parent; spraying magnesium chloride hexahydrate; and then performing intergeneric hybridization. After embryo rescue and colchicine doubling, a doubled material is obtained, and the doubled material is transplanted into a field. Through cytological identification, morphological observation and pollen fertility identification, the doubled material is finally determined as a true hybrid plant.

The application discloses a melon mutant and variety breeding technology with a leaf stalk and a main stem included at an angle less than 45 degrees, relates to the technical field of melon variety breeding, and comprises the following steps: S1, screening excellent melon germplasm resources with inherent genetic traits of small leaf blades and upright leaf stalks as basic breeding parents, and simultaneously considering comprehensive agronomic traits, disease resistance traits and fruit quality traits of the parents; S2, separating offspring populations by means of artificial hybridization or continuous selfing of the screened breeding parents, and constructing a genetic variation basic population; and S3, under the condition of high-density standardized planting of facilities. The application breeds a new melon variety suitable for high-density cultivation, improves land utilization efficiency, group photosynthetic efficiency and unit area yield, simultaneously improves field ventilation and light penetration conditions, and reduces the risk of disease occurrence. Moreover, due to the fact that the outward expansion degree of the whole plant is obviously reduced, the row width is increased, which is beneficial to mechanical spraying, fertilization and weeding operations, and a large number of labor is reduced.