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P a t h o l o g y<br />
NENE, Y . L . , and M.V. REDDY. 1976.<br />
A new t e c h n i q u e to screen pigeonpea f o r<br />
r e s i s t a n c e t o s t e r i l i t y mosaic. T r o p .<br />
G r a i n Legume B u l l . 5 : 2 3 . 1022<br />
B r i e f n o t e s a r e g i v e n o n t h e l e a f - s t a p l i n g<br />
t e c h n i q u e i n w h i c h l e a f l e t s f r o m diseased<br />
p l a n t s i n f e s t e d w i t h m i t e s (Aceria c a j a n i )<br />
a r e s t a p l e d t o t h e p r i m a r y l e a v e s o f t e s t<br />
s e e d l i n g s . The s u p e r i o r i t y o f t h i s t e c h -<br />
n i q u e over t h e t w i g t y i n g t e c h n i q u e i s<br />
i n d i c a t e d .<br />
0RILL0, F . I . , and R.B. VALDEZ. 1958.<br />
Four diseases o f c o f f e e h i t h e r t o u n d e s c r i -<br />
bed i n the P h i l i p p i n e s . P h i l i p p . A g r i c .<br />
4 2 ( 7 ) : 2 9 2 - 3 0 2 . 1026<br />
Rhizoctonia b l i g h t was seen on plgeonpeas<br />
used as temporary shade f o r c o f f e e t r a n s <br />
p l a n t s . I t k i l l e d a l l i n f e c t e d p l a n t s and<br />
produced many l a r g e l i g h t brown s c l e r o t i a<br />
o n l e a v e s . Disease a l s o caused d e f o l i a t i o n<br />
of c o f f e e b u t no s c l e r o t i a f o r m e d . Symptoms<br />
and c u l t u r e a r e d e s c r i b e d .<br />
NENE, Y . L . , and M.V. REDDY. 1976.<br />
Screening f o r r e s i s t a n c e t o s t e r i l i t y<br />
mosaic o f pigeonpea. P I . D i s . Reptr<br />
6 0 ( 2 ) : 1 0 3 4 - 1 0 3 6 . 1023<br />
The s t e r i l i t y mosaic (SM) i s w i d e l y p r e v a <br />
l e n t i n t h e I n d i a n s u b c o n t i n e n t , p r o d u c i n g<br />
complete o r p a r t i a l s t e r i l i t y i n a f f e c t e d<br />
p l a n t s . In some f i e l d s 100% i n c i d e n c e was<br />
o b s e r v e d . T r a n s m i s s i o n o f t h e c a u s a l<br />
agent is t h r o u g h t h e eriophyid m i t e , Aaevia<br />
c a j a n i . Two thousand e i g h t hundred and<br />
f o u r a c c e s s i o n s , i n c l u d i n g pigeonpea<br />
(Cajanus c a j a n ) g e r m p l a s m / c u l t l v a r s ,<br />
Atylosia s p p . , and Cajanus x Atylosia<br />
crosses were screened f o r r e s i s t a n c e t o<br />
SM, by u t i l i z i n g a l e a f - s t a p l i n g i n o c u l a -<br />
t i o n t e c h n i q u e . Four pigeonpea l i n e s<br />
ICRISAT-3783, - 6 9 8 6 , - 6 9 9 7 , - 7 0 3 5 , and one<br />
c u l t i v a r (ICRISAT-7179 or HY-3C) were i d e n <br />
t i f i e d a s immune. L i n e s showing o t h e r<br />
d e s i r a b l e c h a r a c t e r s i n c l u d i n g l o n g e r<br />
i n c u b a t i o n p e r i o d , l e s s d i s e a s e i n c i d e n c e ,<br />
m i l d symptoms, and f l o w e r i n g i n s p i t e o f<br />
i n f e c t i o n were a l s o i d e n t i f i e d .<br />
NEWTON, W., and J . W . L . PEIRIS. 1953.<br />
V i r u s diseases of p l a n t s in C e y l o n . FAO<br />
P I . P r o t . B u l l . 2 ( 2 ) - . 1 7 - 2 1 . 1024<br />
Pigeonpea i n Ceylon ( S r i Lanka) i s a f f e c t e d<br />
by y e l l o w mosaic and p a l e m o s a i c ; symptoms<br />
o f b o t h v i r u s i n f e c t i o n s a r e g i v e n .<br />
ONIM, J . F . M . , and P.R. RUBAIHAYO. 1976.<br />
Screening pigeonpea f o r r e s i s t a n c e t o<br />
Mycovellosiella c a j a n i . SABRAO J.<br />
8 ( 2 ) : 1 2 1 - 1 2 5 . 1025<br />
Of 15,000 p l a n t s c o m p r i s i n g 2,107 v a r i e <br />
t i e s , 314 p l a n t s were s e l e c t e d f o r r e s i s <br />
tance to M. (Cercospora) cajani. When<br />
progeny l i n e s from 1 1 o f these s e l e c t i o n s<br />
were grown a t f i v e s i t e s i n Uganda and<br />
Kenya, l i n e s U C - 7 9 6 / 1 , UC-2515/2, UC-2113/1,<br />
and UC-2568/1 were b o t h r e s i s t a n t and<br />
h i g h - y i e l d i n g . Disease i n c i d e n c e was s i g <br />
n i f i c a n t l y and n e g a t i v e l y c o r r e l a t e d w i t h<br />
g r a i n y i e l d .<br />
OVERMAN, A . J . 1974.<br />
The i n f l u e n c e of c e r t a i n n e m a t i c i d e s on<br />
weed p o p u l a t i o n i n sandy s o i l s . P r o c .<br />
S o i l Crop S c i . Soc. F l a . 3 3 : 7 2 - 7 4 . 1027<br />
P r i o r to seeding plgeonpeas (Cajanus c a j a n<br />
M i l l s p . ) as a summer crop in May, t h e<br />
p l o t s were b r o a d c a s t - t r e a t e d w i t h c a r b o -<br />
f u r a n (11.2 k g / h a ) , sodium a z i d e (26.9 k g /<br />
h a ) , and a c o m b i n a t i o n of t h e t w o . The<br />
c a r b o f u r a n i n c r e a s e d t h e number o f c r a b -<br />
grass and nutsedge p l a n t s in the second<br />
cover crop t e s t . Sodium a z i d e was n o t<br />
e f f e c t i v e when used a l o n e o r i n c o m b i n a t i o n<br />
w i t h c a r b o f u r a n . R e s i d u a l e f f e c t s were<br />
a l s o r e a l i z e d .<br />
PADWICK, G.W. 1939.<br />
Report o f t h e I m p e r i a l M y c o l o g i s t . S c l e n t .<br />
Rep. A g r i c . Res. I n s t . New D e l h i , 1938-39:<br />
105-112. 1028<br />
I s o l a t e d from w i l t e d pigeonpeas were several<br />
d i s t i n c t species of Fusarium, one of which<br />
appeared to d i f f e r from F. udum and to<br />
produce severe w i l t i n g , b u t n o f o o t - r o t .<br />
I d e n t i t y b e i n g e s t a b l i s h e d .<br />
PADWICK, G.W. 1940.<br />
Report o f t h e I m p e r i a l M y c o l o g i s t . S c l e n t .<br />
Rep. A g r i c . Res. I n s t . New D e l h i , 1939-40:<br />
103-115. 1029<br />
Experiments w i t h c r o s s - i n o c u l a t i o n t e s t s<br />
w i t h Fusarium w i l t f u n g i a r e d e s c r i b e d .<br />
PADWICK, G.W. 1940.<br />
Genus Fusarium 5: Fusarium udum B u t l e r .<br />
F. vasinfectum A t k . and F. lateritum v a r .<br />
uncinatum W.R. I n d i a n J . A g r i c . S c i .<br />
1 0 ( 6 ) : 8 6 3 - 8 7 8 . 1030<br />
F u l l d e s c r i p t i o n s o f c u l t u r a l c h a r a c t e r s o f<br />
v a r i o u s i s o l a t e s o f Fusarium c a u s i n g w i l t<br />
i n c o t t o n , pigeonpea, and sunn-hemp.<br />
Suggests F. udum B u t l . v a r . c a j a n i f o r<br />
pigeonpea w i l t , organism b e i n g m o r p h o l o <br />
g i c a l l y and c u l t u r a l l y i d e n t i c a l w i t h , b u t<br />
p a t h o g e n e t i c a l l y d i f f e r e n t f r o m , t h a t<br />
c a u s i n g sunn-hemp w i l t .<br />
129