Retrospective Theses and Dissertations 1933 The cytology and histology of the root nodules of some leguminosae Fredrick Wilhelm Bieberdorf Iowa State College Follow this and additional works at: http://lib.dr.iastate.edu/rtd Part of the Agriculture Commons, and the Plant Sciences Commons Recommended Citation Bieberdorf, Fredrick Wilhelm, "The cytology and histology of the root nodules of some leguminosae " (1933). Retrospective Theses and Dissertations. Paper 13215. This Dissertation is brought to you for free and open access by Digital Repository @ Iowa State University. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Digital Repository @ Iowa State University. For more information, please contact [email protected]. NOTE TO USERS This reproduction is the best copy available. UMI Signature was redacted for privacy. Signature was redacted for privacy. Signature was redacted for privacy. 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Is fuilyfti^ Aettvi%y» •©» »l«p® of th® soy mm fi»€« ttee# t# «1* %m rnpmrtmXm la gr^wm infiiffewat r&n^mm Soilttles «mt itey# m©mAtt%ofm mmr<$ ma,®'k alilc#to exterml mA iatemai *Bm&m pkjAuIss -that w@m grmm la a Ue&-9j, hl&Qk soil war® imt a@ In a »©r« smx^f sellm. ai» sJmjp# &» tlies© gwtwa aiidtti# it i«%eriila@€ Iqr til# wmlmM mm%Ml ar -asrlsteimtl# aetiviti#®# . ##11 occart- at a auatjer of |>toe« ia tla© nadul# ®f tli® «#ytoma* Ib the early #®ir®l«p»«S''tal etagt.® all M'LLM eaK b# til© a#yb#aii Bodul#, CQBtl»w« tlietP •iiei»ist#».t4e aeti^ty»- trnxoA Cell «itfi.si^s«i aotii th® asiul# is ateat ,XS days ©M* oMal @#lls esatimne ti« of bacterid fta€ 10).» &f I'itoaia iwttl ttey «d»taia a» alm»daii«® iscgin t© ¥©•©©» 8ti»»o:»ally #nl«.rg@d, mkmm plmm Itt all dtreetlon#.,: 4a all plmnmm, lii«a o®ll €tvi»ian 'iias ©®a®«d., grw*tii of tl# 111c# layer, wMell £ eaaiteiw- mmrromxds tliS' tiafaet®i c#lls,proirM## thmir e-xp&nMlm* Flipr® f slices eell division# Pareiichyaa smrwuMlug tim vaseul&iP eelI® ibliat a.re al®0. liicr^a®# ti» coif^ex# |Ft,gs# ® aM IS|» acfopetallf until tli« vmseulai* te-adles and then ®alargei»a% "®iis tb© «rfcei #leiigatt9» of fflRiif of in fcnn 8 ttat «M @ijlarg«»3at nodttl# eiontla»®s 'by ®iil«rgefl«at ©f ljife-et«i '©©lis* far ®te mm »t tli© ape-x grmtU accounts f®iP %a«ter®lAi|. e#ll-s* (.Plg* 111' r#gloi» '©f t3» ©o.rtieal bean nGfital®# a e®rk ea»l>S.iini is feta lnat«® In th® ©titer. .l»ye» of Hi© ^rmth e^nttinw® &t %he 8«y©^^'ic caiHbiiis ©3*%-' mvttml . isajibiam-Af. the nodule-#«*elops slwultanefasly witk tfae .egyfe ^wtiAum rf the root Is eontimioua v;ith It, (Fig®» If an4 0O)« ROfial# 1# e'©mflet«ly e®v«-p®€ witli a. ©»i»ic oaaMia la3r#r,,||f cork -t«lls* I IH S ^ I • a 5 I i -P' o § I © I I u 9 4^ S* m $4 m 5 5 ,c a? •4? i s c I I h I I mm i I I I m HI i I 1 a I 5 « I % I I I ffl 3 M 4 I # S O m i *» m 01 %4 © i S) 5 « IO t o m J P m m r4 5- I I « 5 43 43 M r4 .f-l I H' H f-l « . 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Vascular touaSl.®* i®d:;root, WU Cross section of Qowp€«t modwl# «.# UmBB Bm%Xm> atmm b« ¥as©ttlar irjfflii#. e. Gamblai layer* a* #, lay&y# mils* root# ^ xi# Fig. mm- sl^wlmg mettml laf»r^ root eontlnuous with nodal#. §6 X. Am hm 3^1a%» vascpaljir # • t i y s m i i l Mjm* A* f4g»- W-* G^mpm &• Oambial te, baotoroi^a. o4>iai mm V&s&ul&r biaadl«« cortieal #» 001% layws« e* wrnmrntrnm alfalfa wm% "^0* W J' FSg. Sweat clover aoflul®, (km boot* "b# Vasculai? buadl®# c« Old bacteroidjul cells. d, H@wly infeeted eella* Apical Ei0i*ist«m» X* fc' -... *1 ik \ • #*/ % * • ttkc. ^ •; it ndk. v._ •*:. r « . I i ^ ^ik- • '* • e %'' M«» Alfftlf* itsm#* m®wtm Sm %• fii# motoil® shonmg iwr mm Mms^mm mmmtmrn^ ^ •fe»a#.- Apifflal, iil^vw* nawllyorora&a m it mmm %m l#t® iafnetiom GMM md fca^tlon of mseulajp mm,* e» rmt»h «# tnmSOj&t, fig. m» lit7«r# passiag thi?ou^ ^.ftte£^ja,3. 4^ x» &, Baotoroidal e#lls« h* Cortieal parenoSiirraR# #,» fiapui #©i%« «»i Fig. Cowp««i noduld sh<wli». 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