在水分异质性供应下野牛草相连分株的反应  

Effects of heterogeneous water on linked two-ramets in the stoloniferous herb,Buchloё dactyloides

作　　者：牛建忠[1] 周禾[1] 毛培胜[1] 孙彦[1] 王显国[1] 王晓荣[1] 

机构地区：[1]中国农业大学草地研究所

出　　处：《草业科学》2007年第1期44-47,共4页Pratacultural Science

基　　金：国家研究与开发专项"转基因植物研究与产业化开发"(JY03-B-31);北京市自然科学基金项目"长绿野牛草新品种选育及遗传性能的研究"(6992015)

摘　　要：野牛草Buchloёdactyloides相连分株对水分异质性的反应研究表明:就分株生物量、叶长、株高、1级匍匐茎总长、1级匍匐茎总节数、1级匍匐茎生物量而言,妹株从姊株单向显著获益;就叶宽而言,姊株、妹株双向获益。姊株高水能显著增加妹株非匍匐株叶长、妹株1级匍匐茎数、妹株1级匍匐茎总长,姊株低水能显著增加姊株1级匍匐茎总节数、姊株最长1级匍匐茎长;妹株高水能显著增加姊株2级匍匐茎数、妹株分蘖节生物量。姊株能显著增加最长1级匍匐茎长、1级匍匐茎粗、1级匍匐茎生物量、2级匍匐茎数;妹株能显著增加非匍匐株大蘖植株数、非匍匐株株高、非匍匐株生物量。姊株高水、妹株低水对促进妹株非匍匐株株高的作用显著。The results of heterogeneous water on linked two-ramets in Buchloe dactyloides indicate that younger daughter ramets gain gift significantly from elder daughter ramets about ramet biomass, leaf length, plant height, 1st stolon length, 1st stolon node number, 1 st stolon biomass. But leaf width gains gift between elder and younger ramets. The elder tamer high water can increase significantly the younger＇s leaf length, 1st stolon number and 1st stolon sum of length. The elder tamers low water can increase significantly the elder＇s 1st stolon sum of node and longest 1st stolon length. The younger tamers high water can increase significantly the elder＇s 2nd stolon number and the younger＇s tillefing node biomass. Elder ramet is significantly more than younger ramet in longest 1st stolon length, 1st stolon diameter, 1st stolon biomass and 2nd stolon number. Younger ramet is significantly more than elder ramet in non-stolon larger tiller number, plant height and nonstolon biomass. There is significant promoting role among elder tamers high water, younger tamers low water and younger daughter ramets.

关 键 词：野牛草 克隆植物 匍匐茎 水分 异质性 

分 类 号：S543.9[农业科学—作物学]