以色列野生二粒小麦染色体的FISH核型分析
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S512.1

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国家自然科学基金(31860380、31660390);贵州省科技计划项目(黔科合平台人才[2018]5781号);贵州省科学技术基金(黔科合基础[2019]1110);贵州省农业成果转化计划(黔科合成果(2016)4022号);国家“七大农作物育种”重点专项(2017YFD0100900);贵州大学自然科学基金(贵大专基合字(2013)01号)


FISH Karyotype Analysis of Wild Emmer from Israel
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    摘要:

    以色列野生二粒小麦具有抗白粉病、条锈病和叶锈病,富含蛋白质和硒等元素,耐旱、耐盐和矿质养分利用率高等诸多优点。本试验采用荧光原位杂交(FISH)技术,分析以色列野生二粒小麦染色体的核型特点,为该种质在小麦遗传及新品种培育上的应用提供参考。结果表明,以Oligo-pAs1-1(红色)和Oligo-pSc119.2-1(绿色)重复序列为探针进行FISH分析发现,以色列野生二粒小麦共有14对染色体,它的A组染色体上主要分布着Oligo-pAs1-1红色信号,而B组染色体上主要分布着明亮且丰富的Oligo-pSc119.2-1绿色信号;通过这些信号在染色体上的分布特点,能够对每对染色体进行准确地鉴别。以色列野生二粒小麦的FISH核型与中国春等普通小麦存在差异,可以用于创造小麦新种质。

    Abstract:

    Wild emmer in Israel has many advantages, such as resistance to powdery mildew, stripe rust and leaf rust, rich in protein and selenium, drought tolerance, salt tolerance and high utilization rate of mineral nutrients.In this study FISH technique was applied to analyze karyotype characteristics of wild emmer from Israel, so as to provide reference for its application of this germplasm in wheat genetics and new variety cultivation. The results are as follow: using the Oligo-pAs1-1(red) and Oligo-pSc119.2-1(green)repeats as probes, the FISH analysis showed that here were 14 pairs of chromosomes in Israel wild emmer wheat inIsraelwild emmer wheat, and the oligo-pas1-1 red signal was mainly distributed on the a chromosome, while the bright and rich oligo-psc119.2-1 green signal was mainly distributed on the B chromosome. Through the distribution characteristics of these signals on chromosomes,each pair of chromosome can be accurately identified. The FISH karyotype of wild emmer wheat in Israel is different from that of common wheat such as Chinese Spring, which can be used to create new wheat germplasm.

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杨春苗,彭泽,杨婷,杨锐,程剑平,张庆勤,张素勤.以色列野生二粒小麦染色体的FISH核型分析[J].东北农业科学,2020,45(4):45-48.

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  • 收稿日期:2019-03-20
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  • 在线发布日期: 2024-11-26
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