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Image 3 of Kentucky farm and home science, vol. 7 No. 3 summer 1961

Part of Kentucky Agricultural Experiment Station

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i K t ky R h R l ' B ' f I t 61] HC €S€3I'C €SI1 ts III 1’1€ l¢ By FRANK B. BORRIES, · in 4; TOBACCO RESISTANT TO GREEN bacco, have not transmitted the formers’ high resist- Y PEACH APHID IS SOUGHT ance to this aphid. However, resistant selections and `V . . , Agi·iCultui·al Exijgtiingiit Station gutouiologists CI`OSS€S \’V1tIl 1`€SlStH1lC€ fI`Oll'l 2`lll thl`€€ ZI.I`€2`I.S BYE I)€lIlg A%‘* are continuing a program to help develop burley €2U`1`1€d OU- §\\_ varieties resistant to the green peach aphid. ° ’° ° ° This aphid is a sap-sucking insect which can dam- PROPERTIES OF age leaves. It also can transmit SOITIC diseases, which BEING STUDIED 1é$B?§CO PEANTS =; A are not too important here at present but are poten- A GINE RS V ‘ · riaiiy harmfut \Vhat’s a tobacco stalk? S Richard Thurston, entomologist, is using three ave- T0 m*mY K@“tdCk}’ f¥U`“lCY$» NS il S¤¤bb<>¤·¤. W00d)’ ,_ nnos of rosoaron Ono is tho nso of bnrioia dark oigan plant hard to cut at harvest time. Sometimes it s per- and Hue-cured varieties to check on resistance to the VGYSEIY *d)l€ td Stdlld dw tddglwst “’€2lth€l`·I)Ut $U€· ··;\ aphid. A second is the use of several hundred foreign Cdmbs td d mild $hOW€1`· __ tobaccos, some of which also are resistant. The third TO the UK- ASl`1Cdltd1`dI EXl)€`i`ml€Ut SUIUOU agi? ` "` is tho nso ot Soino Wild Snooios of tobacco (Nicotiana) cultural engineers, itis a tascinating mechanism about A ,. which aro resistant which little is known of its real physical properties. xt plant Solootions ot foroign tobaooos havn Shown So Hubert Casada, graduate research assistant, is more resistance than Selections or tho Standard burley deep in a proiect to {ind out what makes a tobacco _ _,.; Varioti€SI Thurston Said Crossos oi? those foreign to_ plant bend, Snap, resist pressure, lodge and do many ·____ baccos with the burley plants have shown intermediate Odlm d““g*·· ll hed hs dude dub It will be m 5Um* resistance. The wild species, when crossed with to- (Cr,,,,t,,,rr,r[ mi page 8) aa, _ <:.·Q WA . TA I ,, ·>' *5-;. . T _. _i:·_ \Q’¤ \A ·t_f·- 2., ._`. , ga,- ' ‘¥\\‘ —i Some physical properties of to- ` in i‘’', r,_ `¤ E i in bacco are being studied by Re- " ```’ ” I i`ii A iniii A "'i'`"ii’`’i “iii;` ·> A -Y · _,,._,,,, ·-·* ° " W M " searcher Hubert Casada with the ` — y , ‘ A . »,, / . _ _ _ _ , · .¢·» »·- ‘ · A. and ot this machine which meas- " ‘ ·*’’··‘‘·»=-— ,,g__ V xi is a gw , ;_,A·~ . t.A ‘ ` "", / ‘· ures the amount of stress that a ‘ _ A; , __,,_,__;rrr___ir F ~ ·‘ vg; tobacco plant can resist. Having A A, ii ·-¢- , more accurate data on tobacco ._ $ ~ jA ··* plants will help in development AA , ¢i· 'Q;] i _ of mechanization of tobacco » » ~/»./ ,, _ _ V` I ‘ ,4 A . V A V . V./AV wh, _,_ ~ A 4 . . V , . giowmg and harxesting. ». » ,,_\_ ~ A . » ~ A. i//» ` ` i w a;. /· W., ""~·~»- i T“"¤·* ‘· ’ /»./ .. . .,4.V W A A A =·,; y i. - ~ .· ,,,AA,L_ , I, · fr ·~~· Y, ‘• .,. ,4 g, '__V VA F ,_V; A --~-. A t ~.,,,iVIo I ,t. " ” Krzwruckr FAR}! ANI) Horn; SCIENCE-—SUl\Il\IElK, 1961 3