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Ginkgo Ginkgo Ginkgo species, is the oldest extant seed plant relict plants. China as the origin of the world ginkgo, ginkgo trees very rich in resources. Anlu Hubei Suizhou and is China's ancient ginkgo and one of the main distribution. In this study, Suizhou and Anlu were collected 134 samples of seeds Gingko its kind nuclear characteristics and seeds nutrients two aspects were studied. The main results are as follows: (a) in the ginkgo seed nuclei characteristic index (length, width, thickness, monocytes, weight, aspect ratio, thickness ratio, length to thickness ratio), in addition to thickness ratio, the other characteristics of the individual trees are all There are significant or very significant differences in types of nuclear mutation is very rich in features. (2) whether or between groups within the group, are the smallest variation shelling percentage, the largest single-core weight variation range, kind of nuclear targets in between other features. (3) based on a single core weight and ginkgo seed nuclei other features correlation Ginkgo selective breeding, in addition to a large selection of ginkgo grain type, the best choice for large ginkgo seed kernel width. (4) Suizhou and Anlu ginkgo seed nuclei types are four classes to classes and globus potatoes are mainly from the Buddha's finger classes and Mariko class and there are no classes ginkgo eldest son. (5) whether the type or types of rooms, the main organic nutrients greatest difference in soluble sugar content, starch content, the smallest difference; mineral elements nitrogen and copper content differences, differences in the minimum magnesium content. In order to divide the ginkgo trees whose origin population level there is a similar phenomenon. (6) ginkgo seeds correlation between nutrients and their characteristics with the kind of correlation between nuclear complex, in determining the target character should be a specific reference to the respective correlations between factors, the goal to develop the best traits and programs. (7) Ginkgo seed nuclei within the group characteristics and nutrient content of seeds may not be less than the coefficient of variation of the coefficient of variation among populations. Therefore, the choice of breeding populations when it is necessary to attach importance to the choice of superior genotypes, but also within the group attach importance to the choice of excellent genotypes. (8) the ancient ginkgo tree seeds nuclear characteristics of indicators and nutrient content of no significant regional differences. (9) According to kind of nuclear characteristics and nutrient content of seeds, some plant shortlisted as a further basis for selective breeding.
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