| NaCl胁迫对不同来源木豆种子发芽及幼苗生长的影响 |
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| 引用本文： | 李拴林,罗小燕,陈志祥,吴如月,廖丽,丁西朋.NaCl胁迫对不同来源木豆种子发芽及幼苗生长的影响[J].热带生物学报,2021,12(3):296-304. |
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| 作者姓名： | 李拴林 罗小燕 陈志祥 吴如月 廖丽 丁西朋 |
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| 作者单位： | 海南大学 热带作物学院,海口 570288;中国热带农业科学院 热带作物品种资源研究所,海口 571101;中国热带农业科学院 热带作物品种资源研究所,海口 571101;南京农业大学 草业学院,南京 210095;海南大学 热带作物学院,海口 570288 |
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| 基金项目： | 中国热带农业科学院基本科研业务费专项资金项目（1630032020033和1630032017031）；海南省自然科学基金项目资助（320RC729）；财政部与农业农村部:国家现代农业产业技术体系资助项目 |
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| 摘 要： | 为研究NaCl胁迫对木豆种子发芽及幼苗生长的影响,采用不同质量分数NaCl溶液对5份分别来源于印度(YD1)、缅甸(MD1)、云南(YN1)、广西(GX1)和广东(GD1)的木豆种子和幼苗进行胁迫处理.分别采用培养皿发芽法和水培法,设置不同质量分数的NaCl处理,通过观测木豆种子萌发特性和幼苗生长状况,分析NaCl胁迫...
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| 关 键 词： | 木豆 种子萌发 NaCl胁迫 临界浓度 耐盐性评价 |
| 收稿时间： | 2021-03-22 |
Effects of NaCl Stress on Seed Germination and Seedling Growth of Pigeonpea Accessions from Different Origins |
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| Institution: | 1.College of Tropical Crops, Hainan University, Haikou, Hainan 5702882.Tropical Crops Genetic Resources Institute, CATAS, Haikou, Hainan 5711013.College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China |
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| Abstract: | An attempt was made to analyze the effect of salt stress on seed germination and seedling growth of pigeonpea (Cajanus cajan). Seeds and seedlings of 5 pigeonpea accessions collected from India (YD1), Myanmar (MD1), Yunnan (YN1), Guangxi (GX1) and Guangdong (GD1) were treated with NaCl solution at different concentrations to observe their seed germination and seedling growth, and theirThe salt tolerance was evaluated by membership function method. The critical concentrations of NaCl stress for different pigeonpea accessions were determined at the germination and seedling stages. The seed germination and growth were found to be inhibited by NaCl stress at the germination stage, and the salt tolerance of 5 different pigeonpea accessions at the germination stage was in the order of MD1 > GX1 >YD1 > GD1 > YN1. The aboveground and underground growth of pigeonpea seedlings were significantly inhibited with the increase of NaCl concentration at the seedling stage, and the salt tolerance of 5 different pigeonpea accessions at the seedling stage was in the order of MD1 > GX1 > GD1 > YD1 > YN1. The salt tolerance of different pigeonpea accessions at the seed germination stage was not completely consistent with that at the seedling stage. The results showed that MD1 and GX1 were salt-tolerant while YN1 was salt-sensitive. The critical NaCl concentrations for the 5 pigeonpea accessions at the germination and seedling stages were 0.377%?0.748% and 0.275 %?0.510%, respectively. This might provide an important information for screening and evaluation of pigeonpea germplasm and breeding of new salt-tolerant pigeonpea varieties. |
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