CAJ | 학술논문

以播娘蒿为受体,小麦和棉花为供体,采用人工培养箱种子发芽试验,研究小麦和棉花不同部位(根、茎和叶)的不同浓度水浸液对播娘蒿种子的发芽率、发芽指数、上下胚轴的生长量和生物量的影响.结果表明,在培养皿中随着小麦和棉花各部位水浸液浓度的上升,各处理的播娘蒿种子发芽率和发芽指数呈现缓慢下降趋势,其中棉花茎和根水浸液处理对播娘蒿种子发芽率的抑制效应明显高于小麦茎和根,两种作物叶片的抑制效应没有差异(P ＞0．05).小麦和棉花根、茎、叶水浸液处理下,播娘蒿幼苗上下胚轴生长量和生物量均受到不同程度的影响,两种作物各器官对播娘蒿幼苗生长量和生物量的抑制效应强弱顺序均为茎＞根＞叶.综合效应比较而言,小麦各器官中茎水浸液对播娘蒿种子发芽和幼苗生长的综合效应大于50,值为67．541,而棉花根和茎水浸液对播娘蒿种子发芽和幼苗生长的综合效应均大于50,值分别为60．579,82．891.小麦茎和棉花根、茎中均存在着播娘蒿种子发芽和幼苗生长的抑制物,其中棉花的抑制效应明显高于小麦,对播娘蒿种子发芽抑制剂的研发具有一定价值,在农业生产中,通过小麦和棉花的轮作在一定程度上能够减轻播娘蒿对小麦的危害.
이파낭호위수체,소맥화면화위공체,채용인공배양상충자발아시험,연구소맥화면화불동부위(근、경화협)적불동농도수침액대파낭호충자적발아솔、발아지수、상하배축적생장량화생물량적영향.결과표명,재배양명중수착소맥화면화각부위수침액농도적상승,각처리적파낭호충자발아솔화발아지수정현완만하강추세,기중면화경화근수침액처리대파낭호충자발아솔적억제효응명현고우소맥경화근,량충작물협편적억제효응몰유차이(P ＞0．05).소맥화면화근、경、협수침액처리하,파낭호유묘상하배축생장량화생물량균수도불동정도적영향,량충작물각기관대파낭호유묘생장량화생물량적억제효응강약순서균위경＞근＞협.종합효응비교이언,소맥각기관중경수침액대파낭호충자발아화유묘생장적종합효응대우50,치위67．541,이면화근화경수침액대파낭호충자발아화유묘생장적종합효응균대우50,치분별위60．579,82．891.소맥경화면화근、경중균존재착파낭호충자발아화유묘생장적억제물,기중면화적억제효응명현고우소맥,대파낭호충자발아억제제적연발구유일정개치,재농업생산중,통과소맥화면화적륜작재일정정도상능구감경파낭호대소맥적위해.
Taking Descurainia sophia as receptors,wheat and cotton as the donor,the effect of aqueous extract with different parts (root,stem and leaf)and different concentration of wheat and cotton on germi-nation rate,germination indexes,the growth and biomass of upper and below hypocotyls of aqueous extract were investigated.Results showed that with increasing of aqueous extract concentration in each part of wheat and cotton in culture dish,the seed germination rate and germination indexes of Descurainia sophia with different treatments were slowly reduced.The inhibitory effect of aqueous extract treatments of cotton stem and root on germination rate of Descurainia sophia seed were significantly higher than that of wheat stem and root,there were no differences between inhibitory effect of the two crops leaves.When the root, stem and leaf of wheat and cotton were treated with aqueous extract,the growth and biomass of upper and below hypocotyls of Descurainia sophia seedlings were affected in varying degrees.The strong and weak sequences of the inhibitory effect of the organs of the two crops on seedling growth and biomass were as follows:stem > root > leaf.Compared the comprehensive effect,the comprehensive effect of wheat stem aqueous extracts on seed germination and seedlings growth and biomass of Descurainia sophia was higher than 50,value is 67.541,and the comprehensive effect of cotton stem and root aqueous extracts on seed ger-mination and seedlings growth and biomass of Descurainia sophia was higher than 50,values are 60.579, 82.891,respectively.There were inhibitory substance of seed germination and seedling growth of Descurai-nia sophia in wheat stem and cotton root,stem.Among them,the inhibitory effect of cotton was signifi-cantly higher than that of wheat.Therefore,the research on inhibitory medicament of seed germination of Descurainia sophia had great research value.The crop rotation of wheat and cotton could reduce the hazard of Descurainia sophia on wheat production.