| 逆境下玉米果穗形状及其与产量的关系 |
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| 作者姓名： | Li NN Yang JZ Hao JP |
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| 作者单位： | 1. 山西农业大学,山西太谷,030801
2. 青岛农业大学,山东青岛,266109 |
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| 基金项目： | 山东省科技攻关计划项目(2009GG10009005); 山东省农业重大应用技术创新项目(6207a7); 山西省归国留学人员项目(2003049)资助 |
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| 摘 要： | 为量化玉米果穗形状并明确逆境对其生长的影响,借助图像处理,用矩形度(E)、体积差(V)、纵向质心(L)、偏轴距(T)和球体度(S)分别表示矩形相似性、体积均等性、纵向及横向对称性和圆球相似性,对2种生长条件、2个玉米品种和2种去叶处理的试验结果进行聚类、典型变量和方差分析.结果表明:在吐丝后2周内形状变化明显,E(0.72~0.78)和S(0.40~0.48)上升,L(0.56~0.51)、T(0.02~0.01)和V(0.25~0.21)下降,以后各特征都趋于稳定.逆境(高种植密度,不施肥)使成熟期的E降低了4.5%,V扩大了17.7%,它们与穗长和穗粗结合,能够解释产量变化的87%~97%.纵观玉米果穗生长全过程,L、V和S3个形状参数对逆境较敏感,可作为逆境胁迫的量化指标.
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| 关 键 词： | 玉米 果穗生长 逆境胁迫 形状 图像处理 |
Ear shape of corn and its relations to grain yield under stress |
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| Li NN,Yang JZ,Hao JP.Ear shape of corn and its relations to grain yield under stress[J].Chinese Journal of Applied Ecology,2011,22(7):1782-1788. |
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| Authors: | Li Na-na Yang Jin-zhong Hao Jian-ping |
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| Institution: | LI Na-na1,YANG Jin-zhong2,HAO Jian-ping1(1Shanxi Agricultural University,Taigu 030801,Shanxi,China,2Qingdao Agricultural University,Qingdao 266109,Shandong,China) |
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| Abstract: | To quantify the ear shape of corn(Zea mays L.) and to understand the effects of growth stress on the ear shape are of importance in corn crop science.By means of digital image analysis on whole ear RGB images,and using the definition of extent(E),volumetric odds(V),longitudinal centroid(L),transverse centroid(T),and sphericity(S) to represent the similarity to rectangle,volumetric equality,longitudinal symmetry,transverse symmetry,and similarity to sphere,respectively,the ear shape data from the field exper... |
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| Keywords: | corn(Zea mays L ) ear growth environmental stress shape image process |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ |
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