| 威廉斯香蕉8818及其抗枯萎病突变体的细胞学与组织学研究 |
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| 引用本文： | 胡玉林,谢江辉,江新华,左雪冬,周红霞.威廉斯香蕉8818及其抗枯萎病突变体的细胞学与组织学研究[J].果树学报,2008,25(6):877-880. |
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| 作者姓名： | 胡玉林 谢江辉 江新华 左雪冬 周红霞 |
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| 作者单位： | 中国热带农业科学院南亚热带作物研究所,广东湛江524091 |
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| 基金项目： | 中央级公益性科研院所基本科研业务专项，国家科技基础条件平台重点项目(2005DKA21000-5-05):海南省自然基金项目 |
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| 摘 要： | 为了比较威廉斯香蕉8818及其抗枯萎病突变体8818-1在细胞学和组织解剖学上存在的差异,对这2种香蕉的体细胞染色体数目、气孔保卫细胞的形态特征和根系细胞结构等进行了相关研究。结果表明,8818和8818-1染色体数目均分布在28～37,属三倍体,其整倍体染色体数目为2n=3x=33,8818和8818-1体细胞中的整倍体个数分别占观察总数的41%和52%,除整倍体外,2者体细胞中还存在大量的非整倍体;8818-1的气孔保卫细胞长度与宽度,气孔密度均比8818大,而2者保卫细胞内叶绿体数目差异不明显;8818-1的根系中导管直径和两穿空板间的距离均显著比8818小,而单位面积上的导管数和薄壁细胞数目比8818多。
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| 关 键 词： | 威廉斯香蕉 抗病突变体 细胞学 组织学 |
Cytological and histological studies of Williams banana cultivar and its resistant mutant to banana fusarium wilt disease |
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| HU Yu-lin,XIE Jiang-hui,JIANG Xin-hua,ZUO Xue-dong,ZHOU Hong-xia.Cytological and histological studies of Williams banana cultivar and its resistant mutant to banana fusarium wilt disease[J].Journal of Fruit Science,2008,25(6):877-880. |
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| Authors: | HU Yu-lin XIE Jiang-hui JIANG Xin-hua ZUO Xue-dong ZHOU Hong-xia |
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| Institution: | HU Yu-lin,XIE Jiang-hui,JIANG Xin-hua,ZUO Xue-dong,ZHOU Hong-xia(South Subtropical Crop Research Institute,CATAS,Zhanjiang,Guangdong 524091 China) |
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| Abstract: | In order to compare the difference between Williams banana 8818 and its mutant 8818-1 in resistance to banana fusarium wilt in the cytology and histology,the somatic chromosome number,leaf stomata characteristics and the structure of root-system's cell and tissue of the two were studied.The result showed that the chromosome number of the two triploid culti-vars,both ranged from 28 to 37,while the chromosome number of their euploid was 2n=3x=33,and the proportions of euploid in somatic cells from banana 8818... |
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| Keywords: | Williams banana Resistant mutant Cytology Histology |
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