h M E El

h M E Ml BE E`x E * <xE El E B ` En =`x E B EU i {  vx nx i  V
(1)h+ E ,
(2) x E iE,
(3)M V, V E h+ E BE   n   n iE x E |lE Exp i ,
(4) J{i, V h+ E x   Exp i ,
(5)ih E h+ E x { | +
(6)=x i Eh E V h+  E Ec E gx  nn ni *

<x i E  Yx, <xE El   nn EM* <x E   E ={M   E x xEx {S + E<  iE `E ={V x E xi M xxjh Ei * <E l  +i-xi E Mv x  x  +V E <,  G, V |hEh, E]x n+ E UcE, VE ={ B hvE E E VxE  <x M E El  E r M*

(E)Mv Cx]<x) V xi  +i E  E {Ih /xIh E V E MH x E +x Mv E +xiMi i * < |E BE n  n n  Vx  |hi V {h l i * l  l E  x<  E V Exn +l {v E u n n   Ei * i  x { Vx  E< h M  V V + Exn u i  V :

APLV (Andean Potato Latent Virus)=Bxbx {]] ]x] 
TRSVca (Tobaco Ring Spot Virus-Calico)= ]E M {] -EE
AVBOca (Aracacha Virus-Boca) =BES --(+E)
PVT (Potato Virus T)= {]]  ]
PYVV (Potato Yellow Vein Virus)= {]]  x 

+i: Vx n  ={H h M { Vi , =x V  Exn Mx {  xSi E x SB E +E V   + Ji { <x   H 

(J)+MEh
+ h "BC', "B' + "{xb' + Exn <b Ui  x  *  E xj/ +V,  +n u BE  n {v/Ji  i  * V iE   MH V   + ={M  x  xj E hH J*

(M)h E E]  S
+ h "B', "B', "', "<' +n + u  Sx E |G  i *  15-60 Exb iE M {v E  Sx E n V l {v E  Si , i M {v E h l {v   Vi * +i: l  B    Vi  V  E +iGh E x    BE xSi i  E  * < vh E +v { "V Ji v'(b {] ]ExE)E E + * V EU + SV Vc M V ]xE n+ E  { UcE, M {v E xE, bh` E  { E]< +n* "V Ji v' E +v { v MM E nx M  + E Vc E  +H  n/Vx E nx =M Vi , V h M E +{ix MM x E  i *

(P) V |hEh
+ E h M Ji: Exn u i , n  Exn E V E {  |M x E V +l E l Exn E x E E   V, i +x  <x  E xxjh  Vi * Exp + +xvx lx,  xx fM  MH xn V {n Ei :

1 M, E, Vxv, n{, M + {]x  Ji  + E B l {v Sx Vi , V r E E , M  E] v  H il +vE ={V nx   *

2 <x Sx  {v E Exn <E]] E x  M Vi  il <x BE-BE +J xE E ES P  =M Vi  *  <x {v E z {Ih u MH x E VS E Vi  * <E  nx + x {Ih, V B<V + <C]x <GE{  nJE h H Sx En E xE V E i ={M  i * h "BC' B "B' E  Ji   C{] BM]xx VE VS E Vi *

B<V
 {Ih +vxE + nx  * <E u i E j  { Vx  (V {hESx h)h+ E  +x  {J i  *

x + {V
x (xCE Bb {] <bVx)+ {V ({ BG<b  <C])u <b E {Ih i  * x v +ivE nx , +i: <E u i E j  x  <b E  {Ih   *
<C]x <GE{
< j u h Eh + <E{V E nJ V Ei * +i:  i xn {Ih  * <E >S Mi +   +vE Mx E Eh + <E |M  l+ iE  i  *
Ji E G (ES |C]) {E (Ui) x  h + <b E E Ex E  xx vx Jx SB *

1 J{i xE n+ E |M E* Ji E E B x, Vx + l  E Ex  M E Ji  E  E | x SB *

2 B J{i V h+  E]E E h ni , Ji  +-{ E Ij  ixi ] nx SB*

(R) E] E E Vh u El
<E +xiMi E E E Ex E B {V, E]IE >|b])+ EU ] Mh+ E   J gi *    E xEx {S x E E xxji Ji *  v E JS + +n  + +{x +{  +M gi i  * < |EiE ix  x Mci * i  E]IE Eb + {V E VxE ={v , V E { xjh Ji * =nh :  IE ECxb b  {V B]x |Vi Bb |Vi
+SU {h E B =Si E]xE E Sx + =xE UcEx E B iE , V E E |GiE nx Ec Ec +n E x] x x n *

(S)E]ExE n
h+ E < Si  |{i Ex il x E B + E i E  E +Ei i * +i: E]ExE n+ E UcE E + + E h "<' E  { i E i  * < { E +i| E]xE n  + E  E,  h+ E n {v iE  ni *  nE {<m<b n, h "<'  "B' E  E Ex  | r i  *

(U)Mv E
h M E El E  M iE M, n c {x { =M Vx  ++ E E  M vEi g< V E *   iE h El Vx E B M vEi i | r  Ei , {xi < n  + +vE i x  * h+ E M-vEi E B n i { vx nx M, BE i h E vn G + {v  Sh E B vEi, n  {v E +E E * <B  =k  M E {v  h + E]E vEi BE l *   + E E< E V "E n', "E ES' + "E P' +n  h u V  E i , +i: V E ={Vi nPE iE x i *

(V)>i =i{nx + i{ ={S
M {v E =SSl  >i =i{nx v u h+  H E l  n+ E ={S E  E   V, i h H {v E J i  +vE i * <E +iH h H Exn + {v E ">i =i{nx v' u xE V E {   hbi E V Ei * +Ei {cx { <x hH {v E J "Q Mhx v' u g< Vi  + < |E |{i U]-U] {v/Exn E xE V |Vxx  |M  i *

(Z) +x x n+ E + E B ={M, l  { + V E |M + E h+ E El  E Vi  *  Six x E  ={M E +  *

G& {U

J{`

+x 

G& +M

- M + El