S T ABIL I T AS H ASIL P AD A G E NER ASI S E G REG ASI F 5 , F B E B E RA P A G E NOT I P E K E DEL AI

Abstract

The

e f for ts to incr e a se

th e

pr oduc ti on a nd p roduc t ivi t y

o f so y be a n that c a n be

a c hiev e d throu g h the use of

im pr ov ing

se e d qua li t y

a nd incr e a s in g

plant populations. B r e e din g

a c ti vit ies c losel y

a ssocia ted

with plant se l e c ti on. On e

of

the

purpo se

of

the se lec ti on wa s he ld to obtain stea dy p roduc ti vit y

va ri e ti e s.

S tabili t y

test re sult s i s one

metho d to test stra ins o f plant s, e spec i a ll y

so y b e a n

str a in

that

will be r e lea s e d int o a r e c omm e nde d va ri e t y .

The

e x pe rimen t wa s c onduc ted

a t the

e x pe rimen tal

fie ld

of

the F a c ult y

o f Agr iculture , The

Univ e rsit y

of

Au g ust 17, 1945

B a n y uwa n g i , Ke ba len an ,

B a n y uw a n g i

dist ric t , with a

±

43 mete rs

a lt it ude

a bove

the

se a

l e ve l . Thi s stud y

wa s con duc te d

fr om F e br ua r y

to

J une 2012 .

The

m a ter ials that used

i n th is

stud y

we r e

: 9 kinds

of

ge not y p e s

that

Une j

1 , Une j

2, P oli je

1 , P oli je

2,

P oli je

3,

P oli je

4,

Ma laba r , W il is

a nd

Ge pa k

Kuning ,

P honska

c ompound fe rtili z e r , pe sti c ides

De c is

25 EC , Mar shall

200 C , lea f

fe rtili z e r

He rba fa rm , C o locr on

a nd

F ur a da n

3G . W hil e

the tool s

used on thi s

re se a rc h a re

me a surin g

c ups,

sc a les

a na l y ti c , bu re tt e , dr ip , sc iss or s , spr ay

tanks , buc ke ts,

a nd sc iss or s

c utt ing s .

The

e x pe rimen ts w e re

c onduc ted

to

d e ter mi ne

the

stabil it y

o f

so y be a n

y i e lds

in th e

g e n e ra ti on

F 5 , F 6

a nd

F

of

th e

nine

ge not y pe s

w e r e

teste d , na mel y

Une j 1 , Une j 2 , poli je

1,

P oli je 2 , P oli je

3,

a nd P oli je 4 a s

ge not y p e

pr o mi sing

li ne s

a nd

thre e

str a ins

c o mpar ison, na mel y

Mala b a r , W il is

a nd

Ge pa k Kun ing .

7 This stud y

used

a

ra n domi z e d c ompl e te bloc k de sig n

(RCB D ) e a c h g e n e ra ti on , followe d b y

a n

a n a l y sis

o f

homo g e n e it y

t e sti ng

a nd

stabil it y

testin g

a c c or din g

to

Ebe rh a rt

a n d

R ussell , invol ving

nine

so y be a n ge not y pe s

wit h thre e

re pli c a ti ons

in the g e ne r a ti on

F 5 , F 6

a nd

F I f ther e

is a

sig nific a ntl y

d iff e re n t

re sult

made

S c ott Knott

t e st

at

5%

leve l

W e

used t he

homog e nit y

a na l y sis

:

1.

C hi squar e

test

for

homog e nit y

r a n g e

of

e rr or ,

with

B a rtlett ' s

test ,

2.

Va lue

of

c hi

squar e d

test ,

3.

F

test ,

s ig nific a nt

diff e re n c e

t e st

a nd

the

int e ra c ti on

e ff e c t

of

g

( g

x

s),

4.

C ombine d

analysis ,

a nd

5.

S tabili t y

Te st .

T he

r e sult s showe d th a t the stabil it y

o f the

re sult s of

e a c h

g e not y pe

wa s

influe nc e d b y

g e n e ti c

a n d e nviron menta l fa c tors a nd plant he ig ht. Th e

number

of

pods se e d number , we i g ht pe r 100 se e ds, a nd se e d we i g ht. I t c a n be

used a s

se lec ti on c rite ria

for

so y b e a n y ield im pr ov e me nt pr ogra m. G e not y pe s

teste d, turne d out to Une j 1,

P oli je ge not y pe s 1,

2 a nd P oli je 3, showin g

stabil it y

in two

pa ra mete rs on the obser va ti ons, whe r e a s the

other

g e not y pe s onl y

on th e

pa ra mete rs of

obse rva ti o n onl y .

I t c a n

be

c onc lud e d that Une j 1,

P oli je g e not y pe s 1, P oli je

2 a nd P oli je 3 we re

the sup e rior

g e not y pe s. I t

c a n be

re c omm e n de d to be

de ve loped a nd pr odu c e d in lar g e

qua nti ti e s i n the c omm unit y .

The

other

g e not y p e s, onl y

h a d a

f e w stable

pa ra mete rs, s o it

ne e d ed

fu rthe r

testin g

to

be

stable a t som e loca ti ons a nd a t di ff e r e nt t im e s.