| 木薯二倍体及其同源四倍体叶片形态、生理及抗螨特征比较 |
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| 引用本文： | 韦婉羚,黄珍玲,陈会鲜,杨海霞,兰秀,梁振华,李恒锐.木薯二倍体及其同源四倍体叶片形态、生理及抗螨特征比较[J].核农学报,2022,36(11):2115-2123. |
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| 作者姓名： | 韦婉羚 黄珍玲 陈会鲜 杨海霞 兰秀 梁振华 李恒锐 |
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| 作者单位： | 广西南亚热带农业科学研究所,广西 龙州 532415 |
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| 基金项目： | 国家重点研发计划专项(2020YFD1000603-10);国家现代农业产业技术体系广西创新团队建设专项(nycytxgxcxtd-11-07);广西农业科学院基本科研业务专项(桂农科2021YT157);广西农业科学院科技发展基金(桂农科2020YM151) |
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| 摘 要： | 为比较二倍体及其同源四倍体木薯叶片之间的差异,本试验以木薯华南205、南植199的二倍体及其同源四倍体植株为材料,测定其叶片形态结构和逆境生理指标,鉴定其抗螨性,并进行相关性分析。叶片形态结构和生理指标测定结果表明,木薯同源四倍体的叶片厚度、中裂叶宽、栅栏组织厚度、海绵组织厚度、栅海比、下表皮厚度、下角质层厚度、单宁含量、多酚氧化酶以及苯丙氨酸解氨酶活性均高于其二倍体,中裂叶长、叶形指数、气孔密度和丙二醛含量均低于其二倍体。抗螨性鉴定结果发现,木薯同源四倍体的抗螨性均强于其二倍体。相关性分析结果表明,螨害指数与叶片厚度、栅栏组织厚度、海绵组织厚度、下表皮厚度、下角质层厚度、多酚氧化酶活性以及苯丙氨酸解氨酶活性呈极显著负相关,与单宁含量呈显著负相关,与气孔密度、丙二醛含量呈显著正相关。本研究为木薯倍性育种、抗性育种工作提供了科学依据。
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| 关 键 词： | 木薯 同源四倍体 朱砂叶螨 逆境生理指标 |
| 收稿时间： | 2021-12-03 |
Comparison of Morphological,Physiological and Mite Resistance Characteritics of Cassava Diploid and Its Autotetraploid Leaves |
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| WEI Wanling,HUANG Zhenling,CHEN Huixian,YANG Haixia,LAN Xiu,LIANG Zhenhua,LI Hengrui.Comparison of Morphological,Physiological and Mite Resistance Characteritics of Cassava Diploid and Its Autotetraploid Leaves[J].Acta Agriculturae Nucleatae Sinica,2022,36(11):2115-2123. |
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| Authors: | WEI Wanling HUANG Zhenling CHEN Huixian YANG Haixia LAN Xiu LIANG Zhenhua LI Hengrui |
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| Institution: | South Asian Tropical Agricultural Science Research Institute of Guangxi, Longzhou, Guangxi 532415 |
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| Abstract: | In order to compare the differences in leaves between diploid and its autotetraploid cassava, the morphological structure and stress physiological indexes and mite resistance of the diploid plant SC205 and autotetraphloid plant NZ199 were determined and the correlation analysis was carried out. The results of leaf morphological structure and physiological indexes showed that the autotetraploid cassava exhibited higher indices in the thickness of leaf, palisade and spongy tissue, lower epidermis and lower cuticle, the ratio of palisade to sponge tissue, mid-lobed leaf width, tannin content, polyphenol oxidase, and phenylalanine ammonialyase enzyme activities than those of the autotetraploid. However, mid-lobed leaf length, leaf shape index, stomatal density and malondialdehyde content in autotetraploids were lower than those in the diploids. The results of mite resistance identification found that the mite resistance of cassava autotetraploid was stronger than that of its diploid. The results of correlation analysis showed that the mite damage index was highly significantly negatively correlated with the thickness of leaves, palisade tissue, sponge tissue, lower epidermis and lower cuticle, and polyphenol oxidase and phenylalanine ammonialyase enzyme activities, while it was negatively correlated with tannin content, but significantly positively correlated with stomatal density and malondialdehyde. This study provides a scientific basis for cassava ploidy breeding and resistance breeding work, and also lays the foundation for subsequent experiments. |
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| Keywords: | cassava autotetraploid Tetranychus cinnabarinus adversity physiological indicators |
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