吉林省200份骨干玉米自交系的芽、苗期耐盐碱性综合鉴评
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S513

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吉林省农业科技创新工程人才基金项目(C92072215);吉林省科技厅重点研发项目(20200402024NC)


Comprehensive Identification and Evaluation on Saline-Alkaline Tolerance of 200 Maize Elite Inbred Lines at Bud and Seedling Stages in Jilin Province
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    摘要:

    在种子萌发期和幼苗三叶一心期,以吉林省200份骨干玉米自交系为试材,分别采用适宜盐、碱和混合盐碱筛选的200 mmol/L NaCl、100 mmol/L Na2CO3、200 mmol/L NaCl+25 mmol/L Na2CO3混合溶液进行胁迫实验。分别测定种子发芽率、幼苗苗情等适宜耐盐碱筛选的生理指标,进而转化为耐性系数综合评价自交系的耐盐碱性。结果表明:不同时期、不同胁迫处理的玉米自交系间耐盐碱性差异显著;基于芽期和苗期的耐盐碱性综合评价对200份自交系进行聚类分析,划分为高耐、耐、中等、敏感、高感5个类群,筛选出444、四287、哲446、A188、掖52106、吉741、吉t9、吉728等8份高耐玉米自交系。研究结果为玉米耐盐碱种质资源筛选提供实验依据。

    Abstract:

    With 200 maize elite inbred lines in Jilin Province as test materials, the experiments were carried out at seed germination and three-leaf stage, respectively. 200 mmol/L NaCl, 100 mmol/L Na2CO3, 200 mmol/L NaCl + 25 mmol/L Na2CO3 mixed solutions suitable for the screening of saline, alkaline and mixed saline-alkaline screening were used for stress test. Seed germination rate, seedling condition and other physiological indexes suitable for salt and alkali tolerance screening were measured, and then transformed into tolerance coefficient to comprehensively evaluate the salt and alkali tolerance of inbred lines. The results showed that there were significant differences for saline-alkaline tolerance among maize inbred lines in different stages and different treatments. Combined with the results at the bug and seedling stages, 200 inbred lines were divided into 5 groups(high tolerance, tolerance, moderate tolerance, sensitivity and high sensitivity). Eight inbred lines(444, Si 287, Zhe 446, A188, Ye 52106, Ji 741, Jit 9, Ji 728) with high saline-alkaline tolerance were selected. The results provided experimental basis for the selection of maize saline-alkaline resistant germplasm resources.

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陆程张,张春宵,李淑芳,李万军,刘学岩,郑大浩,李晓辉.吉林省200份骨干玉米自交系的芽、苗期耐盐碱性综合鉴评[J].东北农业科学,2022,47(1):26-30,50.

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  • 收稿日期:2020-03-23
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  • 在线发布日期: 2024-11-09
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