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引用本文:
白掌叶片生长定量分析与生长模型构建
A quantitative Analysis on leaf growth and establishment of leaf growth Logistics model of Spathiphyllum
投稿时间:2020-04-01  修订日期:2020-04-20
DOI:
中文关键词: 白鹤芋  叶片  Logistic方程  表型性状
英文关键词: Spathiphyllum  Leaf  Logistic equation  Phenotypic character
基金项目:广东省国际科技合作项目(2016A050502051)
作者单位E-mail
李祥燕 华南农业大学林学与风景园林学院/广东省森林植物种质资源创新与利用重点实验室 1322301971@qq.com 
郑妍妍 华南农业大学林学与风景园林学院/广东省森林植物种质资源创新与利用重点实验室  
侯志文 华南农业大学林学与风景园林学院/广东省森林植物种质资源创新与利用重点实验室  
张欢 华南农业大学林学与风景园林学院/广东省森林植物种质资源创新与利用重点实验室  
廖飞雄 华南农业大学林学与风景园林学院/广东省森林植物种质资源创新与利用重点实验室 fxliao@scau.edu.cn 
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中文摘要:
      叶片是草本植物白掌地上部分和株型构成的主要器官,也是主要的观赏部位,但对其生长规律的研究鲜见报道。以美酒、绿巨人、皇后3个不同大小叶片的品种为试验材料,测定了叶片生长过程中不同阶段叶片宽度、叶片长度、叶面积、叶脉数、叶厚度、叶尖夹角和叶片全长,定量分析了叶片生长性状、不同品种间的差异,构建了主要性状的生长模型。叶长度与宽度随时间变化的生长进程二维构图呈漏斗形;叶片宽度、叶长、叶面积、叶全长与随时间进程而产生较大变化,生长完成的叶片形态在品种间差异显著,叶全长、叶片长度、叶厚度等是叶部形态产生差异的主要性状。选择叶片宽度、叶长、叶面积、叶全长构建了叶片生长的Logistic 生长模型y = K/(1 + ae-bt),这几个性状生长方程的拟合度R2均达0.97以上,实测值与理论值相关系数达0.99以上,说明这个数学模型很好地揭示了白掌叶片的生长规律。基于生长模型方程求导,结合叶片形态变化,可将白掌叶片生长分为生长期、快速生长期、生长后期3个明显的阶段。3个品种的8个叶片性状变异系数分布18.07%到88.85%, Shannon遗传多样性指数H’在2.94-3.28间,表明性状有遗传的多样性。
英文摘要:
      Leaves are the main organs above-ground part of plant, the determination of plant shape and ornamental part for herb Spathiphyllum. Less research on its leaf growth was reported so far. The leaf width, leaf length, leaf area, leaf vein number , leaf tip angles and leaf full length and leaf SPAD of three cultivar of S. ‘Mojo’, S. ‘Sensation’ and S. ‘Queen’ with different shape were measured during the leaf growth stages and data were statistically analyzed for a quantitative leaf growth and fitting to the logistic equation as leaf growth models. A funnel-shaped plot presented a two-dimensional dynamic pattern of full leaf length and leaf width change over time. Leaf width, leaf length, leaf area changed greatly with time and were key characters which contributed to significant differences of leaf shape among the cultivars. Full leaf length, leaf length, leaf width, leaf area were selected for establishment of Logistic growth model of y = K/(1 + ae-bt). Fitting degree R2 of four Logistic growth equations for those characters were above 0.97 and the coefficients between the measured and theoretical values were all above 0.99, which means the equations are suitable for fitting the growth of the Spathiphyllum leaves. Start-up growth stage, Fast-growth stage and Post-growth stage were deduced for Spathiphyllum leaf growth through the derivation of the Logistic growth equation combining with the leaf morphological changes. The coefficient variation distribution were 18.07%-88.85% and the Shannon genetic diversity index H’ were 2.94 -3.28 for 8 leaf characters of 3 cultivars, indicating the genetic diversity in Spathiphyllum.
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