| MC812和郑单958子粒灌浆和脱水特性研究 |
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| 引用本文： | 徐田军,吕天放,赵久然,王荣焕,刘月娥,刘秀芝,陈传永,邢锦丰,王元东,刘春阁.MC812和郑单958子粒灌浆和脱水特性研究[J].玉米科学,2019,27(4):87-92,99. |
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| 作者姓名： | 徐田军 吕天放 赵久然 王荣焕 刘月娥 刘秀芝 陈传永 邢锦丰 王元东 刘春阁 |
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| 作者单位： | 北京市农林科学院玉米研究中心/玉米DNA指纹及分子育种北京重点实验室 |
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| 基金项目： | 国家重点研发计划项目（2016YFD0300106）、北京市农林科学院青年科研基金（QNJJ201728）、北京市农林科学院科技创新能力建设专项（KJCX20151406）、北京市农林科学院院级科技创新团队建设项目（JNKYT201603）、现代农业产业技术体系专项（CARS-02-11） |
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| 摘 要： | 以MC812和郑单958为试验材料,分析其子粒灌浆和脱水特性,研究不同基因型玉米品种子粒灌浆和脱水特性的差异。结果表明,百粒干物重在品种间存在显著差异,MC812平均百粒干物重较郑单958高2.64 g。与郑单958相比,MC812子粒达到最大灌浆速率的时间(Tmax)平均提前4.40 d,灌浆起始势(R0)高0.25,活跃灌浆期(P)长1.33 d。MC812灌浆渐增期的平均灌浆速率显著高于郑单958,灌浆缓增期则与郑单958相当。MC812生理成熟时子粒含水量略低于郑单958,但差异不显著。收获时的子粒含水量在品种间呈极显著差异,MC812收获时的子粒含水量则较郑单958低5个百分点。生理成熟后的脱水速率在品种间呈极显著差异,MC812分别较郑单958高0.15%/d。穗粒数、百粒重和产量在品种间呈极显著差异,MC812产量较郑单958高6.67%、穗粒数和百粒重分别较郑单958高8.56%和8.04%。
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| 关 键 词： | 玉米 MC812 郑单958 子粒灌浆特性 脱水特性 |
| 收稿时间： | 2018/4/18 0:00:00 |
Grain Filling and Dehydration Characteristics of MC812 and Zhengdan958 |
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| XU Tian-jun,LU Tian-fang,ZHAO Jiu-ran,WANG Rong-huan,LIU Yue-e,LIU Xiu-zhi,CHEN Chuan-yong,XING Jin-feng,WANG Yuan-dong,LIU Chun-ge.Grain Filling and Dehydration Characteristics of MC812 and Zhengdan958[J].Journal of Maize Sciences,2019,27(4):87-92,99. |
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| Authors: | XU Tian-jun LU Tian-fang ZHAO Jiu-ran WANG Rong-huan LIU Yue-e LIU Xiu-zhi CHEN Chuan-yong XING Jin-feng WANG Yuan-dong LIU Chun-ge |
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| Institution: | Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China,Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China and Maize Research Center, Beijing Academy of Agriculture and Forestry Sciences, Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding, Beijing 100097, China |
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| Abstract: | Field experiments were conducted to clarify the difference in grain filling and dehydration characteristics of different genotype maize varieties. MC812 and Zhengdan958(ZD958) were used to study the grain filling and dehydration characteristics. The results showed that, there are significant differences in the 100-grain dry matter weight among varieties. The average 100-grain dry weight of MC812 was 2.64 g higher than that of ZD958,. The time reaching the maximum grain filling rate(Tmax) of MC812 was 4.40d earlier, the grain filling initiation potential(R0) was 0.25 higher, and the grain filling duration(P) was 1.33 d longer than that of ZD958; the average filling rate during gradual increasing period of grain filling for MC812 was significantly higher than that of ZD958, and the average filling rate during slow increasing period of grain filling was the same. The moisture content of MC812 was slightly lower than that of Zhengdan958 at physiological maturity, but the difference was not significant. The grain moisture content at harvest differed significantly among varieties; the moisture content of MC812 was 5 percent lower than that of ZD958 at harvest; the dehydration rate after physiological maturity was extremely significant differences of among varieties with 0.15%/d higher of MC812 than ZD958. The grain number per ear, 100-grain weight and yield were extremely significant differences among varieties; the yield of MC812 was 6.67% higher, the number of grains per ear and 100-grain weight was 8.56% and 8.04% higher than that of ZD958, respectively. |
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| Keywords: | Maize MC812 ZD958 Grain filling characteristic Grain dehydration characteristic |
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