广西植物Issue(6)：756-762,869,8.DOI:10.3969/j.issn.1000-3142.2013.06.007
五种火棘属植物的叶面积回归分析
Leaf area regression analysis of five Pyracantha species
摘要
Abstract
Leaf is an important plant organ for transpiration and photosynthesis.Accurate and non-destructive meth-ods for estimating leaf area are critical to many related studies.In order to get the accurate regression functions to es-timate leaf area of Pyracantha species,26401 mature leaf samples,from five species (Pyracantha fortuneana,P. densiflora,P.atalantioides,P.crenulata,P.angustifolia)in Guizhou,Yunnan,Guangxi,Hunan provinces in Chi-na,were collected in 2010 and 2011.Leaf analysis software of WinFOLIA was used to measure leaf indices such as leaf area (LA),leaf blade length (L),leaf horizontal width (W),leaf perimeter (LP),leaf vertical length (VL);then LW,L/W,LL and WW were also obtained.Regression analyses between LA and these leaf shape indices of these five species were carried out by using 1 1 models including power,cubic,quadratic,linear,logarithmic,inverse,compound, S,growth,exponential,logistic model.The results were as follows:leaf area can be modeled better with LW than other indices;leaf area can be modeled better with LW by power,cubic,quadratic and linear models,and power func-tion is the fittest model (R2>0.970);Power models for five Pyracantha species were LA=0.743(LW)0.936 ,LA=0.748(LW)0.936 ,LA=0.742(LW)0.955 ,LA=0.732(LW)0.952 and LA=0.766(LW)0.954 respectively.This study high-light that power model of leaf area based on L×W can be better used to non-destructively estimate leaf area of five Pyracantha species.关键词
火棘属/叶面积/叶形/回归分析/幂函数方程Key words
Pyracantha/leaf area/leaf shape/regression analysis/power function分类
农业科技引用本文复制引用
王勇,杜晓军,招礼军,焦志华,安明态..五种火棘属植物的叶面积回归分析[J].广西植物,2013,(6):756-762,869,8.基金项目
国家自然科学基金(31070554) （31070554）
国家重点基础研究发展计划项目(2006CB403207) （2006CB403207）
