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The Creation and Identification of Primary Trisomics of Rice

机译：水稻主要三体组的创建与鉴定

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Primary trisomics were screened out directly in the pollen plants of autotetraploid rice. Twelve types of primary trisomics were screened in the combination of H5421. Primary trisomics plants account for 7% of pollen plants and 95.77% aneuploid. The identification of chromosome number is according to the character of chromosome syndesis of microspore during diaki-nesis, metaphase Ⅰ or anaphase Ⅰ in the meiosis. The constitution of chromosome is 2n = 2x + 1 = 25. There usually are two types of syndesis in primary trisomics plants during meiosis diakinesis and metaphase Ⅰ, which is 11Ⅱ + 1 Ⅲ or 12 Ⅱ + 1Ⅰ. Most of the chromosome pairing in trisomes at diakinesis and metaphase Ⅰ were 11Ⅱ+1Ⅲ, with averag of 65.68% and 72.34%, 12 Ⅱ+ 1? with averag of 33.67% and 26.93% and 11 Ⅱ + 3 Ⅰ with average of 0.23% and 0.26%, respectively. The type of trivalent usually is chain-type, Y-type and spoon-type in diakinesis and metaphase Ⅰ, while univalent is dot type. We identified the adscription of triplo-5 and triplo-8 by using karyotype analysis of pachtene.
机译：直接在同源四倍体水稻的花粉植物中筛选出主要的三组学。 H5421的组合筛选了12种主要的三体组化合物。初级三体植物占花粉植物的7％和95.77％的非整倍体。染色体数目的确定是根据减数分裂中的二叠纪，中期Ⅰ或后期Ⅰ的小孢子染色体的特征。染色体的构成为2n = 2x + 1 =25。减数分裂动力学和中期Ⅰ期间，初级三体植物通常具有两种类型的综合，即11Ⅱ+ 1Ⅲ或12Ⅱ+1Ⅰ。在诊断和中期Ⅰ时，三体染色体的染色体配对大多数为11Ⅱ+1Ⅲ，平均分别为65.68％和72.34％，为12Ⅱ+1？平均分别为33.67％和26.93％，以及11Ⅱ+ 3Ⅰ的平均值分别为0.23％和0.26％。在诊断和中期Ⅰ中，三价类型通常是链型，Y型和匙型，而单价是点型。我们通过使用pachtene的核型分析确定了triplo-5和triplo-8的归属。

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