Seeds

The seeds referred to in fruit trees sometimes refer to fruits such as chestnuts, walnuts, hazelnuts, sometimes including the inner peel, such as peaches, apricots, plums, dates, olive oil, etc., and sometimes only part of the seeds, such as pomegranates.are nutrient storage organs, generally containing starch, sugar, fat,
protein
minerals and so on. Fruit trees are mostly hetero-crops, and seed reproduction often mutates, so it is mainly used to breed birch or for live selection.fruit tree seeds generally go through two stages of physiological maturity and morphological maturity. Physiological maturity refers to the embryo has matured, with germination ability, but its internal nutrients are still in a soluble state, high water content, easy to lose water,
organic
also easy to seep out, vulnerable to
bial
infested, at this time sowing easy mold, decay. After physiological maturity, seed skin, embryo gradually complete its development, water reduction, containing nutrients
convert
into starch, protein or fat, become insoluble substances, physiological
notogenic
effect weakened, seed skin constantly dense browning, not easy to lose water, seepage and mold, into the form of maturity stage.most temperate fruit trees and seeds enter the physiological sleep stage after the form matures. Factors affecting seed sleep: (1) peel or seed skin hard, good sealing, or contains wax or leather, so that water, gas is not easy to pass through, can be preserved for a longer period of time.(2) seed embryo needs to continue to develop, such as Ginkgo seeds from the mother shedding, seed embryo is still small, it takes several months to fully grow, in order to have germination force, oil palm needs several years of follow-up development.(3) the reversal of the process of physiological, bio-biomaturation, which requires a certain amount of accumulation temperature.