| 蒙农红豆草EMS诱变后代光合特性比较研究 |
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| 引用本文： | 乔雨,石凤翎,钱亚斯,张雨桐,闫伟.蒙农红豆草EMS诱变后代光合特性比较研究[J].草地学报,2020,28(2):367-374. |
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| 作者姓名： | 乔雨 石凤翎 钱亚斯 张雨桐 闫伟 |
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| 作者单位： | 内蒙古农业大学, 草原与资源环境学院, 草地资源教育部重点实验室, 内蒙古 呼和浩特 010019 |
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| 基金项目： | 内蒙古自治区应用技术研究与开发资金计划项目（201702072）；内蒙古自治区草原英才“内蒙古高原乡土草种质资源遗传改良与利用”创新团队资助 |
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| 摘 要： | 本研究以蒙农红豆草（Onobrychis viciifolia Scop ‘Mengnong’） 甲基磺酸乙酯（EMS，Ethyl Methane Sulfonate）诱变后代（M1和M2）和未经诱变（CK）为试验材料，采用逐步聚类法基于株高和SPAD值将M1，M2和CK群体分为A，B，C 3类，测定每个群体中不同类别材料光合日动态，筛选出具有高光合潜力的红豆草材料。结果表明：M1，M2和CK在15：00以后，净光合速率和气孔导度降低，胞间CO2浓度上升，说明导致其光合作用降低的原因是非气孔因素。B类的M2代净光合速率日均值最大；A，B，C 3类的M2以及A类的M1的气孔导度日均值最高；A类的CK和B类的CK和M2的水分利用效率较大。总体而言，B类M2代净光合速率（5.76 μmol·CO2·m-2·s-1）最高，水分利用效率（2.33 μmol·mmol-1）相对较高。因此，EMS诱变蒙农红豆草M2代的B类群体可作为高产育种的亲本材料。
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| 关 键 词： | 蒙农红豆草 突变群体 SPAD 净光合速率 |
| 收稿时间： | 2019-05-16 |
Comparison on Photosynthetic Characteristics of EMS Mutagenesis Progeny of Mengnong Sainfoin |
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| QIAO Yu,SHI Feng-ling,QIAN Ya-si,ZHANG Yu-tong,YAN Wei.Comparison on Photosynthetic Characteristics of EMS Mutagenesis Progeny of Mengnong Sainfoin[J].Acta Agrestia Sinica,2020,28(2):367-374. |
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| Authors: | QIAO Yu SHI Feng-ling QIAN Ya-si ZHANG Yu-tong YAN Wei |
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| Institution: | Inner Mongolia Agricultural University, College of Grassland, Resources and Environment, Key Laboratory of Grassland Resources, Ministry of Education, Hohhot, Inner Mongolia 010019, China |
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| Abstract: | The experimental materials were EMS mutagenesis progeny M1 and M2 and CK without mutagenesis. The M1,M2 and CK populations were divided into A,B and C 3 groups. The diurnal dynamics of photosynthetic characteristics of different species in each group were measured to Screen sainfoin materials with high photosynthetic potential. The result showed:Pn and Gs were decreased but Ci increased in M1,M2 and CK populations after 15:00,which illustrated the decrease of photosynthesis of Mengnong Sainfoin was non-stomatal factor. Pn in type B in the M2 population was the maximum in all categories,A and C in M2 and B in CK were the next. Gs in types A,B and C in the M2 population and classification of A in the M1 were the maximum in all categories. The lowest Ci was in class A of the CK. The highest WUE was in class A of the CK. Therefore,the B group in the M2 generation in Mengnong Sainfoin can be used as a parent material for high-yield breeding. |
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| Keywords: | Mengnong sainfoin Mutation population SPAD Pn |
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