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热研4号王草和桂闽引象草的核型分析

罗宗志, 林洁荣, 林志魁, 陈碧成, 梅兰, 林占熺

罗宗志, 林洁荣, 林志魁, 陈碧成, 梅兰, 林占熺. 热研4号王草和桂闽引象草的核型分析[J]. 草业科学, 2016, 10(9): 1711-1717. DOI: 10.11829/j.issn.1001-0629.2016-0167
引用本文: 罗宗志, 林洁荣, 林志魁, 陈碧成, 梅兰, 林占熺. 热研4号王草和桂闽引象草的核型分析[J]. 草业科学, 2016, 10(9): 1711-1717. DOI: 10.11829/j.issn.1001-0629.2016-0167
Zong-zhi Luo, Jie-rong Lin, Zhi-kui Lin, Bi-cheng Chen, Lan Mei, Zhan-xi Lin. Karyotype analysis of Pennisetum purpureum×P. americanum cv. Reyan No.4 and P. purpureum cv. Guiminyin[J]. Pratacultural Science, 2016, 10(9): 1711-1717. DOI: 10.11829/j.issn.1001-0629.2016-0167
Citation: Zong-zhi Luo, Jie-rong Lin, Zhi-kui Lin, Bi-cheng Chen, Lan Mei, Zhan-xi Lin. Karyotype analysis of Pennisetum purpureum×P. americanum cv. Reyan No.4 and P. purpureum cv. Guiminyin[J]. Pratacultural Science, 2016, 10(9): 1711-1717. DOI: 10.11829/j.issn.1001-0629.2016-0167

热研4号王草和桂闽引象草的核型分析

基金项目: 

国家林业局公益性行业专项&#x0201c

浑善达克沙地疏林型植被建设技术研究&#x0201d

(201504412)

福建省科技重大专项&#x0201c

菌草食药用菌产业化关键技术研究与示范&#x0201d

(2014NZ002-1)

国家菌草工程技术研究中心项目&#x0201c

菌草生物学特性及优良品种评价体系研究&#x0201d

(JCGG14020)

摘要: 采用常规压片法,对热研4号王草(Pennisetum purpureum×P. americanum cv. Reyan No.4)和桂闽引象草(P. purpureum cv. Guiminyin)的染色体数目和核型进行分析,以期为狼尾草属种质资源多样性保护利用和遗传育种研究提供理论依据。结果表明,两者染色体基数均为x=7。其中,热研4号王草为三倍体,有21条染色体,核型公式2n=3x=21=21m(3SAT),染色体相对组成I.R.L=9S+3M1+3M2+6L,3条染色体含有随体;桂闽引象草为四倍体,有28条染色体,核型公式2n=4x=28=18m(2SAT)+10sm(2SAT),染色体相对组成I.R.L=10S+6M1+4M2+8L,4条染色体含有随体。热研4号王草和桂闽引象草核型不对称系数分别为60.15%和62.19%,属于1B型和1C型,其核型都属于比较原始的类型。

 

English

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  • 收稿日期:  2016-03-30
  • 发布日期:  2016-09-19

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