|
|||||
|
|
| 攀枝花市麻疯树果实大小和结籽率对果实组成的影响 | |
| 引用本文： | 何亚平,费世民,蔡小虎,王乐辉,陈秀明,蒋建强,雷彻虹.攀枝花市麻疯树果实大小和结籽率对果实组成的影响[J].四川林业科技,2008,29(6). |
| 作者姓名： | 何亚平 费世民 蔡小虎 王乐辉 陈秀明 蒋建强 雷彻虹 |
| 作者单位： | 1. 四川省林业科学研究院,四川,成都,610081 2. 长江造林局攀枝花分局,四川,攀枝花,617000 3. 攀枝花市林业局,四川,攀枝花,617000 |
| 基金项目： | 四川省麻疯树资源培育科技支撑项目 |
| 摘 要： | 本文研究了麻疯树果实及其组成的资源配置问题,分析了果实大小和结籽率对果实组成的影响.攀枝花市麻疯树果实平均重量为1.7 g,其中种子平均重量1.17 g,壳重量0.53 g,分别占34%和67%.单个果实平均种子数为2.47个,结籽率为82%,单粒种子重量为0.47 g.这些果实及其组成的参数存在明显的样地间差异,可能与土壤厚度有关.从统计学上考虑,麻疯树果实及其组分存在正态或偏态分布,变异程度可用整齐度来表示.麻疯树果实大小对其组分参数具有调控作用.回归表明,果实大小和壳重量之间符合多项式模型:y=0.0013x4+0.054x3-0.2769x2+0.5933x+0.048(R2=0.6671);果实大小和种子重量之间也符合多项式模型:y=0.0786x2-0.3723x+0.7175(R2=0.6225).结果表明,果实较小时较多资源投资在果壳上,而果实较大时较多资源投资在种子上,超过一定大小则对壳的投资较多.还表明,麻疯树果实组分的资源配置存在一个优化模式,约在2.5 g左右壳比例最低而种子比例最高.结籽率高的果实较大.而单粒种子重量较低,单个果实种子重量较大.不考虑其它因素.麻疯树果实大小和结籽率对果实组成的资源配置起到了调节作用. |
| 关 键 词： | 麻疯树 果实 结籽率 果实组成 大小依赖性 资源配置 |
The Influence of Fruit Size and Seed Setting Rate of Jatropha curcas on its Fruit Composition in Panzhihua City |
|
| HE Ya-ping,FEI Shi-min,CAI Xiao-hu,WANG Le-hui,CHEN Xiu-ming,JIANG Jian-qiang,LEI Che-hong.The Influence of Fruit Size and Seed Setting Rate of Jatropha curcas on its Fruit Composition in Panzhihua City[J].Journal of Sichuan Forestry Science and Technology,2008,29(6). | |
| Authors: | HE Ya-ping FEI Shi-min CAI Xiao-hu WANG Le-hui CHEN Xiu-ming JIANG Jian-qiang LEI Che-hong |
| Institution: | HE Ya-ping1 FEI Shi-min1 CAI Xiao-hu1 WANG Le-hui1CHEN Xiu-ming1 JIANG Jian-qiang2 LEI Che-hong3(1.Sichuan Academy of Forestry,Chengdu 610081,2.The Panzhihua Department,Forestation Bureau of the Yangzte River,Panzhihua 617000,3.Forestry Bureau of Panzhihua City,Panzhihua 617000) |
| Abstract: | In this paper,studies were made of the resource allocation of Jatropha curcas fruits and their composition and an analysis was made of the influence of the fruit size and seed setting rate on the fruit composition.The average fruit weight was 1.7 g,of which the average seed weight was 1.17 g,and the fruit shell weight was 0.53 g,which were respectively 34% and 67% of the total fruit weight.On an average,there were 2.47 seeds in a single fruit,the seed setting rate was 82% in all samples measured,and a singl... |
| Keywords: | Jatropha curcas Fruit Seed setting rate Fruit composition Size-dependent Resource allocation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |