| 再生小麦—麦草9号的形态学与细胞遗传学研究 |
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| 引用本文： | 孙源璘,李集临,张延明.再生小麦—麦草9号的形态学与细胞遗传学研究[J].黑龙江农业科学,2010(1):25-27. |
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| 作者姓名： | 孙源璘 李集临 张延明 |
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| 作者单位： | 哈尔滨师范大学,生物系,黑龙江,哈尔滨,150025 |
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| 基金项目： | 黑龙江省重点攻关资助项目 |
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| 摘 要： | 对普通小麦与中间偃麦草远缘杂交后代中选育的八倍体小偃麦—麦草9号进行了形态学和细胞学鉴定。结果表明:麦草9号植株高大,结实性较好,籽粒饱满,生长旺盛;根尖细胞染色体数目为2n=56,对其进行花粉母细胞减数分裂观察,中期Ⅰ具有一定数量的单价体、环状二价体、棒状二价体;后期Ⅰ、后期Ⅱ与四分体时期都出现不同数量的落后染色体、染色体桥、微核等现象。这些现象表明中间偃麦草的E组染色体进入了普通小麦的基因组,影响ABD组染色体配对。
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| 关 键 词： | 再生小麦 中间偃麦草 麦草9号 减数分裂 染色体行为异常 |
Study on Morphological and Cytogenetical of Regenerate Wheat-Maicao No.9 |
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| SUN Yuan-Lin,LI Ji-Lin,ZHANG Yan-Ming.Study on Morphological and Cytogenetical of Regenerate Wheat-Maicao No.9[J].Heilongjiang Agricultural Science,2010(1):25-27. |
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| Authors: | SUN Yuan-Lin LI Ji-Lin ZHANG Yan-Ming |
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| Institution: | (Department of Biology of Harbin Normal University, Harbin, Heilongjiang 150025) |
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| Abstract: | Morphological and Cytogenetics of octoploid trititrigias Maicao No. 9,distant bred from the progeny of conmlon wheat and thinopyrum intermedian were studied. The result showed that the plant of Maicao No. 9 was .tall,with good fecundity,fully filled grain and vigorous growth. The chromosome number of the root cells was 2n 56,through the nhservation of pollen mother cells meiosis,there were a certain amount of univalents, ring bivalents and bar bivalents in PMCM. Different numbers of lagging chromosomes,chromosome bridges and micronucleus were found in anaphaseⅠ,anaphase Ⅱ and tetraspore. Those showed that the E chromosome of thinopyrum interrnedium inserted the genoruc of corrmlon wheat,and it disarranged the original matching of chromosome. |
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| Keywords: | regenerate wheat Thinopyrum intermedium Maicao No 9 meiosis abnormal chromosomal behavior |
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