ее Terielieation, the developmenil of e viedos peom and the ol so T Fortiad i лЙ
mepradictive crgans wore practically aut of canterel, T e ciire cvident that e paseibi-
lity ol egrolation of scparate stages ol e develnpment of embrvocic strociores
ig directly я closely dependent оп the completeness об саг лам е оЁ Н
normal marphoperciic processes eccurring i lem. Thus, lhe descriplion of ermib-
ryolugical develaginent яФ the cell, tissne and aganiziic levels is A tecessary
Н ееа basis Jor lurlber brosdenieg el exending of investigalinns in lhe
sreas ol penctics el sclection

Ay wek connected with Яе influence nf оН ла яМА Tactors at the
cridical peraads inearly antopenesis 2180 ее Й8 & knowiedoe af the enlice piclure
ol cvents develnping at the eacly sleges of vulogenesis which determine 11 e whole
incthes process of develuprzerd,

Sucl discoveries of the XXtE centiiy o8 haplowdy, parascaual h}.-l:uril]i.'-'al;url g
growing plants benee 2omatic cells which are -n.‘ all. l:nmlmg-;u-:L al sipgnificance, espegi-
&y fur the practice af ayrriculiure, cannet be cifective iy nsed without the o led ge
ol emhrvolopy. Wilhond deep kiwwledpy of erobirvoric processes it is also impos-
sible Lo toake eifvctove vse of different mellods of investigatmn, such 2 Й,
Pwbeidizatinn, омЕ aof hybrid embrecs an е лНЕ уе е ф ,
polyvploidy. expoerimenta] molagrenesis, inlhoenee of forazing icradialion and the
СЛа НЕ н gt 1 ат ло

Snrretitres il is |Прп'-..'—||1|г W loreeesl Lhe prospects nf кейп р ега мо пату а8
applicd loeereals - ае vasier to decide о, оз sl Эга el wilh some dilli-
culiies The Fact is lhad 21l pracesses appear tn be dependent an the envirenmental
crrdilinms. that 3, tor cxaanple. on the Ome ol waltring nr appiying herbicides and
ЙОЙ

Lo enmmzetion willy Lhe tacs аа И processes aocurring in the Нглдчегоале eesul
it 0 ле Tormmadiwon of graies are cosplicated snd anv-sicded, i became ne-
cessary ta illstrate them by 2 preat sevpuntol Qe iies and phioloes whick ока Ка
up thie «htlase where На оо ефар of some corecls i5 reflecterd.

Ardrawingy, by e expression of 2 Jarmols enbryolopisl 540, Mavastan, s eilic
lenpgraoce af ля ер Р лЙ лу Dlustretes the cenurring progesses, bot
slag reveel: their ер Фулатоеь Ян гоЛемс з

АсыПег| desceiptamo ot all erthrysic peecesses o the chaprers о е Ва waorl
wak Mewessary inr peesenladion of data pol celleeted in the drawings Tris will
enahle the reader tn unclerstand more deeply the ditSeron| sspocts of Tnereativon of
cezhiryaniv slruclures teking garl in The аи up ot ke corn.

Many researchers mepeaicdly turned o the '-.1||r|'.' оЁ Ё'1'|"|_||1_г|||н$_- af ¢ereals,
The managraphs dy Y. 5 Modilevsky sith his collaborulors, by & & Chebolar
ol zef, by TR, Batvzing an whear have deen puihzicd, Svpacsle ooesiions
ol embavelngy of coregls are covered o the works Я ВЙБ Sovict (V. G Aleksand
i, W 5, Yalowlew and olhers) snd torogn (B Norstag, A, Liball, % Musseld,
1L L. Mapepscir and othessyp в п а6; The complegipe of methods aind Uie preat
range of profems, as well s lhe appearaces o) now discoveries and regui
retncols of prachce called e e ereation ol 1he =&t lass, where ke erobrvnlopgical
prrcesses nl the main ceceals wounlil be cenaiderel Thie glce ot publishing # АН
« га wl Cercalze belimges to Пв ое conoen Tulepisr P& Liaransy,

The analysiz of lileratuee an eraboevalogy bas showe Иа e mejoily ol pro
cesses taking place during e decelopezent ol emalryonio strctures 18 anlimithed
to preneral repelaritics aocoedaings Lo the e of harnolngroes rows by МО ВОММ
That is wliy the autbc inaarre cases specially shows (e similar ity ои 13 3еа
mig processes i cdiberend specics. wud п оа 15 restricled anly by a descriplinn
I_I|- ”Щ']'П М1 на I_'F.rl.'i".].

The аыг ое ч poeat difficolties during the process of writing this boali;
in oparlicila, with different deprecs of Khowledpe of vcbeyology of coreals
Therclore the sothor does nat elain to have fully preseided е еп оцу ol all

1l