UV-B增加对麦田杂草看麦娘的影响  

Effects of enhanced UV-B radiation on Alopecurus japonicus:the weed of wheat field

作　　者：王传海[1] 郑有飞[1] 刘炜杰[1] 杨荣敏[1] 王鑫[1] 

机构地区：[1]南京信息工程大学环境科学系,江苏南京210044

出　　处：《生态环境》2005年第2期247-249,共3页Ecology and Environmnet

基　　金：国家自然科学基金项目(40175029);江苏省"333工程"资助

摘　　要：在大田群体条件下,研究了UV-B增加对麦田杂草发生、生长和种子产量的影响。结果表明:UV-B强度增加,看麦娘的密度显著增加;在小麦生育前期,看麦娘的单株茎蘖数下降,而在中后期显著增加;UV-B增加对小麦中后期看麦娘的生长有一定的促进效应;看麦娘叶片的叶绿素和类黄酮含量均表现为增加的趋势。在未来紫外线增加的条件下,看麦娘对小麦生产的影响可能会不断增加。Effects of enhanced ultraviolet radiation on Alopecurus japonicus were investigated. The result show that under the condi-tion of enhanced UV-B irradiation, the density increased significantly, and the number of tillers per plant decreased at the prophase of wheat, while increase significantly at the metaphase and anaphase of wheat; The growth of Alopecurus japonicus was accelerated at the metaphase and anaphase of wheat; The content of leaf chlorophyll and flavonoid also increased in response to enhanced UV-B irradiation. Under the condition of enhanced UV-B radiation in the near future, the impacts of Alopecurus japonicus to wheat produc-tion would aggrandize along with the increasing UV-B irradiation.

关 键 词：UV-B 小麦 看麦娘 

分 类 号：Q148[生物学—生态学]