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Karyotype Analysis of Nainaiqingcai Mustard

机译：Nainaiqingcai Mustard的核型分析

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Brassica juncea cv. Nainaiqingcai belongs to the mustard vegetables of the cruciferous family. It usually takes the leaves and petioles as the edible parts, and pickled pickle or fresh vegetable as the main way of eating, and occupies an important position in the local agricultural product market. In this research, seven chromosome parameters: chromosome length, relative length index, relative length, arm ratio, centromere index, and type of centromere type were measured. The experiment results showed that the maximum chromosome length was measured 3.60 μm and max arm ratio was determined 1.46, relative length ranged between 3.68% to 7.68%. There are including long (L), medium long (M2), medium short (Ml) and short (S) chromosomes four types of relative length. In addition, the maximum centromeric index was measured in 45.66%, centromere type were metacentric (m) chromosomes and submetacentric chromosomes (sm) and the karyotype formula was 2n=36=30m+6sm. Karyotype asymmetry index was 59.631%. The karyotype characteristics was type 2B according to Stebbins's classification criteria. According to the above information, we can drawn a conclusion that 'Nainaiqingcai' is a relatively primitive mustard variety. In this research, the karyotypic characteristics of Nainaiqingcai mustard were revealed from the point of view of cytogenetics.
机译：Brassica Juncea CV。 Nainaiqingcai属于十字花鱼家庭的芥菜蔬菜。它通常将叶子和叶柄作为可食用的部分，以及腌渍泡菜或新鲜蔬菜作为进食的主要方式，并占据当地农产品市场的重要地位。在本研究中，测量了七种染色体参数：测量染色体长度，相对长度指数，相对长度，臂比，厘米指数和符合符号类型的型号。实验结果表明，测量最大染色体长度为3.60μm，测定最大臂比1.46，相对长度范围为3.68％至7.68％。存在长（L），中长（M2），中等短（M1）和短（S）染色体四种相对长度。另外，在45.66％中测量最大焦化指数，以中心型染色体（M）染色体（M）染色体（SM），核型配方为2N = 36 = 30m + 6sm。核型不对称指数为59.631％。根据Stebebins的分类标准，核型特征是2B型。根据上述信息，我们可以得出结论，“Nainaiqingcai”是一个相对原始的芥末品种。在这项研究中，从细胞遗传学的角度揭示了Nainaiqingcai芥末的核型特征。

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