Some Factors Affecting Seed Viability of Leucaena leucocephda (Lmk. de Witt.)

Jurrul Wnrjemen Hutrn Tropika Vd. al No. 1 : 27-36 (2003) Artiktl ( A M )

SOME FACTORS

AFFECTING

SEED

VIABILITY

OF

Leucaena leucocephda

(Lmk.

de Witt.)

Beberapa Faktor yang Mempengambi Viabilitas Benih

Leucaena

leucocephala

(Lmk.

de Witt.)

I G.

K

Tapa ~arma')

ABSTRAK

Ponelitian ini berhrjuan untuk m e ~ n h ~ h n :

(I)

waku pemamnan polong yang t e r n (2) metauk ekstraki benih dcngan pengeringan, ('3) jamur pathogen yong menyerang benih

L

leucoceptraia

Waktu p e qpslong

yaug

tipat

&olr

62 h w i setelah tarbcutuknya hncup bungs.

Paah

waktl ini tercclpai

daya

krcambah k n i h p o l h g tinggipihc

97,2596

Pengm'ngm Ingun pnghenzbwsan

vdorcl

faryro

penmmlltl

menghcuilkan jumlak pdong Z e r W a paling r e d a h dibaffciiffgton &#rgan prrlgmd).Ingun dengun embusan d w a p o w , baik Bcsrgan menggvnakon dat pagering t i p bat& atatpun fipe wagem Pengeringan dengun peitghembusrm

&a

jwdah polmag

terbatka :

2036

drrri

polotag no.9;

21

% dari pdong no.

10;

dun

41%

dari

pdong

no. Jl dengun abya burkewdwh bmlhnyo relatiw paling tinggi dbadingkan &wan kedua pengeringan lainnya yaihr bcrturut-tnmt 87.13%. 44,2596 &n

19,7596

Akan tetqi, &a bmtecaarbah k n i h

clari

metode ekstraksi bebcnih dewan ponghembusan d m tanpa pemanasan masih lebih rendah daripada h r d .

J a w pathogen

yong

menyermg bmih &ah Aspergillus sp., Alternuria sp.,

pvthium

sp.,

dmr

satu jenis tidak teridentifikmi.

INTRODUCTION

Leucaena lewcocaphela

(Lmk.

de

Wia.)

(kernlandingan) is

a

tree,

which has an

bnportmt

rob

both

as forest plant

and

cultivated crops. In Indonesia, L.

lencocephala

has

bstn

known

for

along

time

and

is

used

for intercrops at teak planErrtian

or

as shade plants

d

geegreen

m ~ w e

prducers

in

plantation

(in

Martadid& 1971).

This

species is also

way

useful

as

plants

for

erosion

prevention

(Martadiradja,

1971;

Baage,

1976),

alang-

h

g

eradication (Knoop,

1910; Mathcws, 1974,

Benge,

1976)

and

soil

amendsncnts

(Msutadiredja,

197

1).

One problem in management of

L. leucocephakr

crop

was

difficulty in procurement

of

high quality seed in sufficiently amount.

''

h i o r Lecture and Scientist at

the

Laboratory of Forest P&logy, Faculty of Forcstty, Bogor Agriculture

University Kampus 1PB Darmaga, Bogor