>
> "
> Effect of Plant Growth Against Sunlight Green Beans "
>
> CHAPTER I
>
> INTRODUCTION
>
> 1.1 Background
>
> Plants are living things that act as a producer on this
> earth . In ecosystems
> there are two kinds of interdependent components , ie
> components of biotic and abiotic
> components . biotic component consists of plants , animals ,
> and humans . While
> abiotic components include: air , gas , angina , light , sun
> , and so on .
> Between biotic and abiotic components influence each other ,
> for example ,
> plants require sunlight to perform photosynthesis . Of
> photosynthesis in need
> by other living things . Therefore , we conducted
> experiments to determine
> whether there is influence of sunlight on the growth of
> green beans .
>
>
>
> 1.2 Objectives and Benefits Research
>
>      1.2.1 Research Objectives
>
>        Our goal this
> research are as follows
> :
>
>       a) We want to know ,
> whether there was
> influence of sunlight on the growth of green beans
>
>           b
> ) We want to know
> and study the persoalan of influence of sunlight on green bean
> plants .
>
>       c ) We want to know how
> the sunlight can
> affect the growth of green bean plants .
>
>       1.2.2 Benefits Research
>
> The benefit of this is pecobaan so we know how important the
> influence of
> sunlight for living things , not least on plant growth .
>
> 1.2.3 Research Variables
>
>      1 . Control variables
> include:
>
> growing medium , seed types , the amount of water .
>
>  2 . Independent variables , including :
>
>             air
> temperature , amount of light , air humidity .
>
>          3 .
> The dependent
> variable , include :
>
>             number
> of leaves , plant height , plant age , plant quality
>
>
>
> CHAPTER II
>
>
>
> LITERATURE REVIEW
>
>
>
> Mepengaruhi many growth factors include genetic factors for
> internal and
> external factors consist of light , humidity , temperature ,
> water , and
> hormones . For the germination process is influenced by many
> factors and
> hormones light , although other factors influence .
> According leteratur
> germination is influenced by the hormone auxin , if doing
> germination in the
> dark it will grow faster but bent , it is because the
> hormone auxin is very
> sensitive to light , if the growth is uneven . While in the
> place that
> germination will occur relatively longer , it also caused
> the influence of the
> hormone auxin is equally active when exposed to light . So
> that the plant
> generated a normal or sticking straight up
>
> Sunlight is useful for photosynthesis in plants , but other
> effects of the sun
> is to suppress the growth of plant cells . This causes the
> plants exposed to
> sunlight will be shorter than the plants that grow in the
> dark . This event is
> called etiolation , ie the growth of plant cells very
> quickly in the dark .
>
> Etiolasi = phenomenon shown dalah plants that grow darker ,
> characterized by
> pale, long - long segment , and small leaves . (
> www.kamusilmiah.com )
>
> The impact of crop plants is due etiolasi can not perform
> photosynthesis .
> Though the process of photosynthesis to produce
> carbohydrates aim was
> instrumental in the formation of chlorophyll . Because
> carbohydrates are not
> created , even without chlorophyll leaves so the leaves are
> not green , but a
> pale yellow .
>
> Dark conditions also stimulate production of the hormone
> auxin . Auxin is a
> growth hormone that is found in the meristem cells , such as
> the tip of the
> root and stem ends . Therefore , the plant will grow faster
> and harvest .
>
>  The term auxin is derived from the Greek language
> meaning auxien increase
> . Auxin was first used Frits Went, a Dutch graduate student
> in the country ,
> which found that a compound that can not be characterized
> may cause the coleoptile
> bending toward the light . This bending phenomenon known as
> phototropism .
> These compounds are found coleoptile Went areas . Auxin
> activity tracked
> through the bending that occurs due terpacunya coleoptile
> elongation on the
> side that is not exposed to sunlight . And the results of
> his research , in
> 1928 the production of auxin inhibited in plants are often
> exposed to sunlight
> .
>
> In addition , the enzyme riboflavin on the rod tip absorbs
> indigo rays from the
> sun . Indigo rays destructive enzymes that form indo
> formation of acetic acid
> (a type of auxin ) . That is why , etiolasi plant growth is
> always faster , but
> the stem looks withered because they contain a lot of water
> .
>
> Due to no sunlight on plant propagation organs , long - time
> shrink and die for
> lack of food sources .
>
>  In addition , the physiologists have investigated the
> influence of auxin
> in the process of formation of common roots , which helps
> balance the growth of
> the root system . There is strong evidence showing that
> auxin from the stem is
> very influential in the early root growth . When the young
> leaves and buds ,
> which contain a lot of auxin trimmed , it will decrease the
> amount of root
> formation . When the loss of the organ is replaced with
> auxin , the ability to
> form common roots back
>
>
>
> 2.2 hypothesis
>
>       a) Plant etiolasi had
> higher plant height
> than plants exposed to sunlight .
>
>       b ) look better
> etiolation Plants wilt than
> plants exposed to sunlight .
>
>       c ) The number of leaves
> of the same plant
> etiolation with plants exposed to the sun .
>
>       d ) The color of plant
> leaves etiolasi pale
> yellow , while the color of the leaves of plants exposed to
> sunlight green .
>
>       e ) Plant etiolasi have
> age shorter than
> plants exposed to sunlight .
>
>
>
> CHAPTER III
>
> METHODS
>
> 3.1 Time
>
> Experiment was conducted on June 5 , 2009 to 12 Agutus
> Agutus 2009
>
> 3.2 place
>
> This experiment was conducted in class X - 4 , Sekolah Menengan Atas Negeri 3
> Jambi
>
>
>
> 3.3 Equipment and Materials
>
> Ø 3 pieces of aqua glass .
>
> Ø Cotton taste .
>
> Ø Some green bean seedlings .
>
> Ø Water taste .
>
> Ø Markers .
>
> 3.4 How it works
>
>      1 . Soak some green bean seeds
> . Leave for a few
> moments .
>
>      2 . Choose seeds that grow
> green beans for
> planting .
>
>      3 . Prepare 3 pieces of aqua
> glass .
>
>      4 . Write the first aqua glass
> with the words
> " one pot " , the second aqua glass with the words
> " pot 2
> " , and the third aqua glass with the words " pot
> 3 " .
>
>      5 . Letakanlah some cotton
> Bengan thickness of
> each 1 cm on each glass aqua .
>
>      6 . Plant on each glass aqua
> earlier with each 5
> green bean seedlings .
>
>      7 . Letakanlah aqua glass
> first in places exposed
> to the sun light and the second aqua glass in a dim ( not
> exposed to direct
> light ) , and the third aqua glass in a dark place with
> absolutely no sunlight
> .
>
>      8 . Third anoint the aqua
> glass of water with the
> same lot number ( to taste ) regularly every morning and
> afternoon .
>
>      9 . Observe the growth of the
> third crop of green
> beans and insert data from tables that have been provided
> .
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> CHAPTER IV
>
>
>
> RESULTS AND DISCUSSION
>
>
>
> 4.1 Research Results
>
>
>
> 1. table Observations
>
>
>
> Table 1 (POT
> 1 is put in
> place in the sun)
>
> Plant age (day
> ...)
>
>
>
> number
>
> leaf
>
>
>
> Plant height (cm)
>
>
>
> State / crop
> quality
>
> 1
>
>
>
> 0
>
>
>
> 0.3
>
>
>
> crop conditions :  Plant
> fresh, dark green leaves, plant stems grow
> up, it's just very
> stunted plant growth, plants also somewhat
> withered because getting
> too much sun.
>
> 2
>
>
>
> 0
>
>
>
> 0.6
>
> 3
>
>
>
> 0
>
>
>
> 1.9
>
> 4
>
>
>
> 1
>
>
>
> 3
>
> 5
>
>
>
> 2
>
>
>
> 6
>
> 6
>
>
>
> 2
>
>
>
> 9.2
>
> 7
>
>
>
> 2
>
>
>
> 15
>
>
>
>
>
>
>
> Table 2 (POT
> 2 put in place
> dim)
>
> Plant age (day
> ...)
>
>
>
> number
>
> leaf
>
>
>
> Plant height (cm)
>
>
>
> State / crop
> quality
>
> 1
>
>
>
> 0
>
>
>
> 0.5
>
>
>
> crop conditions : Plant
> fresh, dark green leaves, plant
> stems grow upwards
>
> 2
>
>
>
> 0
>
>
>
> 1.3
>
> 3
>
>
>
> 1
>
>
>
> 5
>
> 4
>
>
>
> 1
>
>
>
> 11
>
> 5
>
>
>
> 2
>
>
>
> 18.3
>
> 6
>
>
>
> 2
>
>
>
> 20.5
>
> 7
>
>
>
> 2
>
>
>
> 22.7
>
>
>
>
>
> Table 3 (POT
> 3 put in place that is not exposed to sunlight)
>
> Plant age (day
> ...)
>
>
>
> number
>
> leaf
>
>
>
> Plant height (cm)
>
>
>
> State / crop
> quality
>
> 1
>
>
>
> 0
>
>
>
> 0.7
>
>
>
> crop conditions :
> Tsnsmsn slightly
> wilted, leaves yellowish
> green and seemingly
> pale, curved stems
> growing plants, plant
> growth goes by
> very quickly.
>
> 2
>
>
>
> 1
>
>
>
> 3.4
>
> 3
>
>
>
> 1
>
>
>
> 7.9
>
> 4
>
>
>
> 2
>
>
>
> 12
>
> 5
>
>
>
> 2
>
>
>
> 19.1
>
> 6
>
>
>
> 2
>
>
>
> 22
>
> 7
>
>
>
> 2
>
>
>
> 24.1
>
>
>
> 4.2 Discussion
>
>
>
> Dietiolasi green bean plants ( plants that grow darker dalah
> ) grows faster
> than plants exposed to a lot of light in a natahari or dim
> because the hormone
> auxin is not inhibited by sunlight . Auxin is a growth
> hormone that is found in
> the meristem cells , such as the tip of the root and stem
> ends . Therefore ,
> the plant will grow faster .
>
> However, the plant stems can tidah straight, but curved . As
> well as the leaves
> . The plant's leaves look wilted and not fresh , as well
> as yellowish green
> color and a little pale . This happens because the plant
> does not get sunlight
> at all so plants are not able to produce carbohydrates for
> the formation of
> chlorophyll . This plant also has excessive water content
> due to no sunlight .
> And because it does not get the sun , after a long time and
> will shrink and die
> for lack of food sources .
>
> While green bean plants that get little sun / put in place
> dim normal growth .
> Plants seem fresh because getting enough sunlight . The
> leaves are dark green
> plants . Growth was normal to above . The plant hormone
> auxin in the running
> normally resulting in not too high . The leaves also get
> enough sunlight to the
> formation of chlorophyll karboidrat .
>
> Again with different plants that are always exposed to
> sunlight . Plant growth
> is severely hampered . but the texture is very strong stems
> and leaf color also
> appear dark green and looked fresh . This happens because
> the plants get too
> much sunlight causes the plant hormone auxin inhibited so be
> stunted / short .
>
> Thus , sunlight affects the growth of green bean plants .
>
>
>
> CHAPTER V
>
>
>
> CLOSING
>
> 5.1 Conclusion
>
>
>
> From the above experiments it can be concluded that :
>
>       1 . Etiolasi plants have
> a higher plant
> height than plants exposed to sunlight .
>
>       2 . Etiolasi plants look
> more wilted than
> plants exposed to sunlight
>
>       3 . Both plants have the
> same number of
> leaves many , the two strands .
>
>       4 . Sunlight is one of
> the factors that
> influence the growth of green bean plants .
>
> 5.2 Suggestions
>
> In the face of this earth , plants are a source of food ,
> our advice is let us
> preserve the plants because we realize that without plants
> or plants we would
> not exist on this earth . And hopefully with the scientific
> work that we made
> called " influence of sunlight on the growth of green
> bean plants ",
> the reader interested in reading it .
>
>