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The nectarine is the main direction of our of Peach production and breeding the carry nectarine biological characteristics and early maturing hybrids improve the germination rate important research on the of nectarine cultivation and varieties improved. In this study, \cracking relationship; nectarine hybrid, the hickory, Gansu peach, apricot, mahaleb materials to study the effects of Provincetown Marin, GA3, BA and other plant growth regulators to break seed dormancy; impact precocious The nectarines hybrid embryo culture factors such as the media, the type and concentration of the modifiers, the cryogenic processing time, transplanting methods of screening, the establishment of a set of a higher rate of seedling precocious nectarine embryo culture technology system. Achieved major results are as follows: \growth rate than ordinary peach faster; heavier \Nectarine peel, pulp tissue structure with the fruit cracking closely related the ordinary peach fruit surface dense fuzz protection, skin cell thick, multi-layered, multi-lateral arrangement, and close a small gap, the coloration pulp cell enlargement rate is slow, and therefore difficult to cracking . The nectarine fruit surface with no fuzz protection, crack, peel cells of the fruit surface corrugated outer stomatal thin, multi-vertical arrangement, and loose rather large gap, coloration pulp cell enlargement rate, and therefore prone to cracking. 3. Pro-Marin, GA3 can effectively get rid of the stone fruit seed dormancy GA3 0.5μg g-1, Provincetown Marin 3.0μg · g-1 can effectively get rid of peach, apricot seed dormancy, seedling growth is basically sound, the concentration is too low, get rid of Sleep ineffective, poor concentration is too high seedling growth; BA can not reach production requirements to break seed dormancy and seedling growth. Provincetown Marin 1.0 to 5.0 μg · g-1 can effectively improve the laminated mahaleb seedling emergence, 3.0μg · g-1 the best breaking dormancy; GA3, BA breaking dormancy effect is not obvious. 4. Set into a higher rate of seedlings of precocious the nectarine embryo culture technology system WPM is the most appropriate precocious the nectarine embryo culture medium, its highest germination rate was 95.56%; precocious nectarine varieties of different maturity cryogenic processing requirements at different times, early maturity varieties of low temperature for a long time, mature late relatively short time requirements; 1 mg / L 6-BA +0.2 mg / L IBA +0.1 mg / L GA3 can effectively get rid of early maturing nectarine Sleep and seedlings good growth; precocious the nectarine embryos cultured optimum pH range of 5.7 to 6.3 the early maturation goods lt; WP = gt; species, require relatively higher medium pH; Plantlet Transplanting daytime cup hooded, opened the night for 5 ~~ 7d per 3d use of carbendazim IRRIGATING time, can effectively improve the survival rate of plantlets were transplanted.
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