Easy and fast seedling method for hybrid pear seeds

Abstract

The invention discloses an easy and fast seedling method for hybrid pear seeds, which comprises the steps of fruit management, seed management and seedling management, wherein the fruit management is as follows: hybrid fruits can be collected in 5-10 days before morphological maturity and are aired and pre-arranged for 3-4h, and then are instantly arranged in a miniature mechanical refrigeratory for refrigeration under the temperature of 3-5 DEG C and a humidity of 85-95 percent; and the hybrid fruits can be stored until the first ten-day period of January in next year in the refrigeratory; the seed management is as follows: the hybrid fruits are delivered from the refrigeratory and are immediately cleaned and then are aired for 48h under a room temperature (0-10 DEG C); then the hybrid fruits are dipped for 0.5-1.0h by formaldehyde (formalin) 100 times liquid with a concentration of 40 percent; and then the hybrid fruits are directly sown without sand storage and lamination; and the seedling management is as follows: when the cotyledons of the seedlings are developed to two cotyledons and one core, the cotyledons are directly transplanted to a selective nursery in the current year with a permanent planting density of 2.0m*1.0m; and only the central trunks of the seedlings are maintained for extended growing so as to increase the height of crowns and try to enter the 'childhood length' of the adult stage as early as possible and shorten the childhood period.

Description

technical field [0001] The invention relates to the field of fruit tree hybrid breeding, in particular to the cultivation of hybrid seedlings in the process of pear hybrid breeding. Background technique [0002] The maturation of fruit tree seeds is the process in which fertilized eggs develop into seed embryos with radicle, embryo, hypocotyl and cotyledons and continuously accumulate various nutrients. The seeds of most fruit trees enter morphological maturity after physiological maturity, showing that the color becomes darker, the seed coat is dense and hard, and the appearance is fully mature. The seeds of deciduous fruit trees have the characteristics of natural dormancy, although they can not germinate even if they are given suitable germination conditions, they need low-temperature stratification to germinate after ripening. The existing method is sand storage stratification. [0003] In the process of hybrid breeding of deciduous pear trees in temperate zone, the see...

AI Technical Summary

Problems solved by technology

Its disadvantages are that the seed storage, stratification and preservation procedures are complicated, the cost is high, and the risk is high; the seed emergence rate is low, the growth volume is small, and the seedlings need to grow in the seedbed until the next year, and can be transplanted to the selection nursery in the third year; Seedlings have a long slow seedling period, less nutrient accumulation, and a longer childhood period

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