| dc.description.abstract | This research is intended to know the influence of concentration and length of
gibcrelin soaking on some temperature as well as the interactiun toward the fission of
dormansi potatoes (Solanwn tuberoswn. L).
This research 1s canied out in microbiology laborato1j agriculture faculty
and biology laboratory FMIPA, north sumatera university which is lasting from April
up to j uly 2004.
The design of research is split-split plot design consisting of 3 (tpree) factors.
Main flot is the concentration of giberehn GA3 (G), consisting of 4 (four) level, G l
(3,5 ppm), G2 (8.5 ppm), 03 (13.5 ppm) and G4 (18.5 ppm). Srna1l plot is the old
treatment for GA3 (W) soaking consisting of 3 level : W1 ( 4 hours), W2 ( 8 hours),
and W3 ( 12 hours). Small plot is th treatment for temperature ( S) consisting of 3 level
: S 1 (20°C), S2 (25°C) and S3 (30°C).
The observation js done to amount of shoot per ro:Jt (fruit\ length of
germination (days), amount of shoot on the end of research (fruits), th1
;-: amount of
roots having shoot (fruit), length of shoot ( cm).
The result of research shows that the ·increasing of Ci A:; 1-_:(mccntration become
I S.5 ppm is able to acceleration the time of germination f()r p'.1iato become 67.44
days, to increase the amount of shoot on the end of research ,vhich is need 120 days
become 3.24 fruits. The treatment of length of GA3 soaking does not gives response
toward the observed parameter. Higher temperature until 25°C giving rnay
accelerated the time of germination for the root become 65.S ! days further, ·it is
reduced again become 85.97 fruits and to increase the amount of shoot on the end of
research become 3.96 fruits then, it is reduced again become 2.56 fruits and to
increase the amount of roots having shoot become 5.67 fruits as well as able to
increase the length of shoot become 2.09 cm. The combination on the treatment of
GA.1 concentration on some temperature give positive response between
concentration treatment and length of soaking GA3 in increas·ing the lerigth of shoot
(G 1 W3 & G2W2 : 2.16 cm). The interaction of length of GAi soaking with some
temperature is increasing the amount of root having shoot (W2SJ : 5.84 fruits). The
combination between the treatment of concentration and length or GA3 soaking on
some temperature gives positive response by increasing the amount of root for having
shoot (6.00 fruits). | en_US |
