The Connection of Water Reception’s Conductivity with Sprout Rate
That Influenced the Temperature and Long Immersion to Papaya
(Carica papaya L.) Seeds
Muhammad Husaini Assauwab
1
, Tengku Cahairun Nisa
2
, Revandy Iskandar Muda Damanik
2
1
Post graduate of Agrotechnology, Agriculture Faculty, Universitas Sumatera Utara, Medan 20155, North Sumatra,
Indonesia
2
Agrotechnology Department, Agriculture Faculty, Universitas Sumatera Utara, Medan 20155, North Sumatra, Indonesia
Keyword: Germinate, Immersion, Long, Papaya, Temperature
Abstract: High requirement of papaya fruit to local market and international, give promising opportunities to this
commodities. Accordingly, to Indonesia’s land for the production of tropical fruit gives fresh air for the
farmer but the obstacle to face in production is the minimum availabilityof seed, because of the difficulty of
papaya seed to germinate. Many ways and effort have been done like soaking many various of solvent,
releasing sarcotesta, drying, but still the result come in variation. The purpose of this research is to get the
connection of water reception’s conductivity with sprout rate that influenced the temperature and long
immersion to papaya seeds (Caricapapaya L), and obtain optimal treatment for germination of papaya seeds.
This research is using three factors, which is the first factor long immersion consist of three variations ( 12
hours, 24 hours, 36 hours). The second factor temperature immersion consist of four variations ( normal
water temperature, 30
O
C temperature, 50
O
C temperature, dan 70
O
C temperature). The research was
conducted in a seed laboratory by using 50 seeds in every treatment. Based on this research the effect of
temperature treatment and the best long immersion in treatment P
2
S
0
with sprout rate 4.99 days and
including those with the smallest damage.
1 INTRODUCTION
Papaya plant is including wet tropical species and its
growth is quite rapid between 10-12 months after
planting the fruit can already be harvested (Suketiet
al.,2010). The germination of papaya seeds
(Caricapapaya L) is affected in many factor, like
environment, temperature, light, pH, oxygen,
humidity temperature, (Hutasoit, 2017; Lange, 1961;
and Marbunet al,2014;). Papaya seeds have phisical
dormancy with slow and unlikely germination
process (Lopes and Souza, 2008). Germination can
occur in 10-21 days after planting, and can
germinate up to 35-40 days (Bhattacharya dan
Khuspe, 2001; Chen dan Tseng, 1996; Indriyani
N.L.P. et al, 2008).
For some research that has been done, there are
differences of opinion about the nature of papaya
seeds, between the nature of intermediates and
orthodoxy. The research that grouping papaya seeds
is orthodox nature based on resistance to desiccation
until moisture content reaches 6-7% (Sari,
2005),even on the moisture content level 5% (Wood
et al., 2000). Juhanda (2013) said that one of the first
treatment effort to the seeds that intendedbreak
dormancy and speed up the occurrence of likely
germination seeds is immersion. Papaya seeds’
dormancy break can be done by soaking the seeds in
various water temperature. Besidethat, immersion
plays to soften the skin of the seeds and making the
water easy to absorb by seeds so the physiology
processes inside the seed can be happen and the
occurrence of germination (Fitriyani et al., 2013).
Plant depence of specific temperature to simulate
germination and development of seedlings
associated, according to plant species (Martyn et al.,
2011; Milbau et al., 2009; and Mondoni et al.,
2008). Response of germination to temperature have
potential to increase response of plant to the change
of climate (Martyn et al, 2011; Milbau et al., 2009;
Mondoni et al., 2009; and Ooi et al., 2009),
especially most of the species who breed
generatively (Venn and Morgan, 2009). By soaking
274
Husaini Assauwab, M., Nisa, T. and Iskandar Muda Damanik, R.
The Connection of Water Reception’s Conductivity with Sprout Rate That Influenced the Temperature and Long Immersion to Papaya (Carica papaya L.) Seeds.
DOI: 10.5220/0009901400002480
In Proceedings of the International Conference on Natural Resources and Sustainable Development (ICNRSD 2018), pages 274-278
ISBN: 978-989-758-543-2
Copyright
c
2022 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved
the seeds of IPB 1 papaya, the result can accelerate
and germination of papaya seeds (Sari, 2005). As the
temperature increases, it affects the increased of
germination of seeds, but inthesomelimit (Finch-
Savage et al., 2006).
Based on the previous research, the researcher
wants to do a research about connection of the
connection of water reception’s conductivity with
sprout rate that influenced the temperature and long
immersion to papaya seeds (Carica papaya L). A
research purpose at obtaining the right treatment for
the best germination.
2 MATERIALS AND METHODS
The research held in seeds technology laboratory
North Sumatra University, Medan with altitude of ±
25 meters above sea level by using the materials of
planting Calina papaya seeds (IPB 9).
The research is using Completely Randomized
Block Design factorial with 2 factors. (The old
immersion factor (P) occurring over 3 levels (12
hours of immersion (P
1
), 24 hours of immersion(P
2
),
and 36 hours of immersion(P
3
)). (Immersion
temperature factor (S) which consist of 4 levels
(normal water temperature (S0), 30
o
C temperature
(S1), 50
o
C temperature (S2), and 70
o
C temperature
(S3)).
The parameters who being observed in this
research like leakage of membrane and sprout rate,
first data was taken 12 hours treatment by measure
the conductivity value of the seed immersion water
by using electro conductivity (EC) meters
(Milwaukee EC60). sprout rate was observed 1st day
after treatment. The result of data analysis on the
real effect then continued with different test using
Duncan test with 5% levels.
3 RESULTS AND DISCUSSIONS
From the result of the research and analysis of
research variance known by temperature treatment
and long immersion of papaya seed effect on
membrane leakage parameter and germination rate
(day). More details can be seen in the table below
.
3.1 Membrane Leakage
Table 1 shows that four of the immersion
temperature treatment produce different electrical
conductivity values between each temperature. The
higher the immersion temperature, the greater the
electrical conductivity value of the soaking water of
the seed. It can be seen that the treatment that shows
highest electric conductivity values contain need on
highest temperature that is on 70
o
C (S
3
) temperature
for amount of 0.51 mS/cm and the lowest on water
normal temperature treatment (S
0
) for amount of
0.28 mS/cm, which is appropriate to the Putra’s
(2011) research who said that the increased of the
temperature will increased the electrical conductivity
of the coffee seed immersion water.
Table 1: Average Old Role and Various Temperature of
Immersion Papaya Seeds
Membrane Leakage
Treatment S0 S1 S2 S3 Average Total
P1 0.27 g 0.31 f 0.42 d 0.49 b 0.37 c 1.50
P2 0.28 g 0.29 g 0.45 c 0.52 a
0.38
b
1.54
P3 0.28 g 0.34 e 0.44 c 0.51 ab
0.39 a 1.58
Average 0.28 d 0.31 c 0.44 b 0.51 a
Total 0.83 0.94 1.32 1.52
Rate of Germination
P1 5.81 6.05 5.67 6.31 5.96 a
23.84
P2 4.99 5.38 5.01 5.82 5.30 b
21.21
P3 5.31 5.75 5.33 5.99 5.60 b
22.38
Average 5.37 b 5.73 b 5.34 b 6.04 a
Total 16.11 17.18 16.01 18.13
Information : The numbers followed by different letters shows the real of
different according to the Duncan’s multiple test at α=5%.
The highest electric conductivity 0.39 mS/cm
occur in 36 hours (P3) long immersion treatment and
the lowest in 12 hours (P
1
) long immersion treatment
for amount of 0.37 mS/cm. The bigger of membrane
leakage in 36 hours long immersion shows that the
seeds’ condition in 36 hours long immersion is more
deteriorate than the seeds that soaked for 12 and 24
hours. The longest it takes for the seeds’
immersionmakes the damage on the seeds’ skin and
cells membrane in coffee seeds and sawo (Hartawan,
2006; Putra et al., 2011 and Hartuti et al.,.2015).
Interaction connection immersion temperature
and long immersion for electric conductivity can be
seen on Table 1 and Image 1, P
2
S
3
seems effecting
not real to the treatment of P
3
S
3
and different to the
other treatment. For the interaction of immersion
temperature treatment with long immersion, shows
that the highest electricity conductivity value is
contain in the P
2
S
3
treatment for amount of 0.52
mS/cm and the lowest electricity conductivity value
is in P
1
S
0
treatment (0,27 mS/cm). Perhaps this
caused by high temperature can lowered the seed
viability, however have been done on tomato seeds.
(Marbun et al., 2014).
The Connection of Water Reception’s Conductivity with Sprout Rate That Influenced the Temperature and Long Immersion to Papaya
(Carica papaya L.) Seeds
275
Figure 1: Electric conductivity on each Long and
Immersion Temperature
3.2 Rate of Germination (Days)
Based on variance analysis known that immersion
temperature treatment, long immersion real effect on
rate of germination. Rate of Germination average
and Duncan’s distance test result can be seen on
Table 1. The fastest rate of germination on 24 hours
long immersion (5.30 Days) shows that, this long
immersion is more affective to process ambition,
than 12 and 36 hours of immersion. In accordance
with Putra’s statement (2011) and Webster et al.
(2016) that rate of germination effected by long seed
immersion (coffee and papaya) as effort to help
soften seed’s skin as long as the water can enter
cotyledon. The fastest long immersion obtained at
immersion temperature treatment at 70
o
C for about
6.04 days. This shows that an increase in
immersion temperature can improve rate of
germination of papaya seeds. This thing is
corresponding with the result of the Putra’s research
(2011) who report that the increased of immersion
temperature can increase the rate of seed
germination of coffee.
Interaction betweenlong immersion and
immersion temperature not real effect to rate of
germination. On the Table 1. It can be seen that the
fastest rate of germination on the treatment P
2
S
0
for
about 4,99 days and the longest on the treatment
P
3
S
3
for about 6,05 days. From the result of the
research tend not to be interconnected, the
possibilityof the internal and external effect than can
beeffectingthe seeds germination and growth,
because considering the research environment is not
homogeneous. The same thing put forward by
Copeland and McDonald, (2001), that
environmental conditions such as moisture and seed
conditions also affect the germination and the
growth of plant. it can be seen from the seeds that
obtained do not come from one of the same fruits,
the same trees, the same maturity. This thing is
corresponding with Dias’s statement (2014), that
fruit maturity level can be affected papaya seeds’
physiologyquality. For more details can be seen in
the Figure 2.
Figure 2: Rate of germination on each long and immersion
temperature
3.3 Membrane Leakage’s Connection
with Sprout Rate
Membrane leakage’s connection with sprout papaya
seeds can be seen on Figure 3. Temperature
Treatment combination and long immersion on pre-
sprouts containers have no significant connection.
From Figure 3 shown that with high membrane
leakage will slow the rate of sprout papaya seeds.
Seen from Figure 1 and 2, high temperature and
long immersion will break seeds, with marking the
conductivity value of papaya seeds immersion
water. Ma (2016) have been reported the same thing
salix seeds. As well as the germination of papaya
seeds increase almost linear with increase water
immersion temperature (Aisah and Elfien, 2016).
The immersion stipulatesa series of biochemical
changes in pare seeds which is important to start the
process such as breaking dormancy, hydrolysis,
inhibitory metabolism, imbibition, enzyme
activation but at certain temperature and long
immersion (Jamil et al.,2016).
ICNRSD 2018 - International Conference on Natural Resources and Sustainable Development
276
Figure 3. Membrane leakage connection and rate of germination oninteraction between temperature with long papaya seed
immersion.
4 CONCLUSION
This result of the research shows that in a single
treatment of the best treatment for membrane
leakage at 12 hours of immersion, for the best
immersiontemperature on normal water immersion
treatment, because of the less damage level of seed
than the other treatment. The best rate of
germination for the best single on 24 hours long
immersion and the best temperature treatment on 50
o
C temperature, both of the treatment show the
fastest rate of germination.
The best treatment interaction for rate of
germination contained in the treatment P
1
S
0
(4,99
days), it is possible that damaged caused by
immersion for 24 hours is tolerable, possible with
normal water temperature that do not damage the
seeds.
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