新疆狗牙根无性系构件特征的比较  

Comparison on Clone Characteristics of Xinjiang Bermudagrass

作　　者：孙宗玖[1] 李培英[1] 阿不来提.阿不都热依木 

机构地区：[1]新疆农业大学草业与环境科学学院新疆草地资源与生态重点实验室,乌鲁木齐830052

出　　处：《新疆农业大学学报》2008年第3期32-35,共4页Journal of Xinjiang Agricultural University

基　　金：国家自然基金项目(30760154);科技部国家科技支撑项目(2006BAD01A19-2);新疆草地资源与生态实验室开放课题(XJDX0201-2005-04)

摘　　要：在栽培条件下,对分蘖-拔节期的7份新疆狗牙根无性系构件特征进行比较,结果表明:从构件形态看,无性系在株高、匍匐茎粗、叶长、叶宽、叶片数上差异显著(P<0.05),变异系数依次为33.51%,21.00%,35.38%,19.11%,25.96%,表现出极大的可塑性;从构件生物量看,无性系在匍匐茎鲜重、直立茎鲜重、地下生物量及形态指数间差异显著(P<0.05),C5匍匐茎与地下生物量、C4直立茎及形态指数最高,依次为375.92,4 978.41,993.96 g/m2和4.19;从无性系构型上看,新农2号狗牙根趋向于"密集型",C5则表现出"游击型",其他材料居中。Cynodon dactylon had rhizome and stolon, which was one kind of typically clonal plants. In some extent, plasticity of clone showed adapting ability to environment. Characteristics of the clone modules during tillering and jointing stage were compared among seven Xinjiang Bermudagrass under cultivated condition. Results showed that the morphology of clones had significant difference on plant height, stolon diameter, leave length, leave width, quantity of leaves （ P 〈0.05）, coefficient of variation was respectively 33.51%,21.00%,35.38%, 19.11%, 25.96%, as showed great morphology plasticity. The biomass of stolon, erect stem, underground and shape index had significant difference （ P〈0.05）. The stolon and underground biomass of C5, the erect stem biomass and shape index of C4 were the highest, which were respectively 375.92,4978.41,993.96 g/m^2 ,4.19. Clonal architecture of C1 showed more ＂intensive＂ habit, C5 was more ＂guerilla＂ habit, others were in the middle.

关 键 词：新疆 狗牙根 无性系 形态可塑性 

分 类 号：S543.9[农业科学—作物学]