03-transpirasi, absorbsi
TRANSCRIPT
-
7/21/2019 03-Transpirasi, Absorbsi
1/28
AIR HILANG DARI TUBUH TUMBUHAN
DARI PERMUKAAN BEBAS (EVAPORASI)
DARI DALAM TUBUH
-UAP (TRANSPIRASI)
-CAIRAN (GUTTASI)
PROSES HILANGNYA AIRDALAM BENTUK UAP AIRDARIJARINGAN HIDUP
TANAMAN YANG TERLETAK
DI ATAS PERMUKAANTANAH
MELEWATI :
STOMATA (80%)
LUBANG KUTIKULA
LENTISEL
-
7/21/2019 03-Transpirasi, Absorbsi
2/28
xilem
Palisade parenkhim
Sel mesofil
Lapisan batas
udara
Epidermis atas
kutikula
CO2 rendahRongga stomata penuh
uap air
Tahanan lapisan batas
Tahanan stomata CO2 tinggi Sel penjaga
Lapisan batas
udara
kutikula
Konsentrasi uap udara
atm
Konsentrasi uap udara daun
Ruang antar sel
Lubang stomata
TA
%P
KE
R
RPL%S
#S
L(
R
!R
K#
"T
##
R!
&R
R(
-
7/21/2019 03-Transpirasi, Absorbsi
3/28
Stomatal opening and closure is caused by changes in turgorof the guard cells. When guard cells are fully turgid, thepore is open; as the guard cells lose turgor, the stomatal
pore size is reduced
-
7/21/2019 03-Transpirasi, Absorbsi
4/28
LAJUTRANSPIRASI
-
7/21/2019 03-Transpirasi, Absorbsi
5/28
5
18.00
12.00
15.00
21.00
24.00
3.00
06.00
09.00
24h Cycle of Stomatal Opening and Closing
Why is this cycle an
adantage to most plants!
-
7/21/2019 03-Transpirasi, Absorbsi
6/28
PRODUKSI TANAMAN YG DAPAT DICAPAI DARI
PEMAKAIAN SEJUMLAH AIR TERSEDIA
WUE : Water Use Efficienc
DINYATAKAN:
1. P!"#"$" #&'!$* (PK+ ,"-"! #) '$"/ #"$" ""!" 2 ,$3"'$-#"
4. T"'/$"'$ (,"-"! #) '$"/ # "$"""!" 2 ,$3"'$-#" 555 NISBAHTRANSPIRASI
J!-"3 "$ 2 ,$/-#" # !3"'$-#" 1# 6"3" #$ ""!" ("'$& """
3$-"2" "$ &-3 "'/$"'$ ," /&,#'$
6"3" #$ '-"!" /!63"
-
7/21/2019 03-Transpirasi, Absorbsi
7/28
PENGUKURAN TRANSPIRASI
1.1.
!&, "7$!$# (-$'$!)!&, "7$!$# (-$'$!)
4.4. !&, /&&! ,$*'$!&, /&&! ,$*'$
.. !&, #"' 9&6"- 93-&$,"!&, #"' 9&6"- 93-&$,"
.. !&,!&,," /&&!," /&&!
Hold rubber
stopper
1 ml
pippete,water-filled
&in.atakan dgn Transpirational
-lux / 'g m02jam01(
-
7/21/2019 03-Transpirasi, Absorbsi
8/28
;"#&
-
7/21/2019 03-Transpirasi, Absorbsi
9/28
66-=$,"#L"/$'" -$-$
/&'$'$
!a"t#r $a%a&'t(&)(*an:
6. D"
!a"t#r %(ar'%in+"(n+an
". S$" !""3"$6. T!/"
9. K-!6"6"
,. A$
. K","" "$,"-"! ""3
-
7/21/2019 03-Transpirasi, Absorbsi
10/28
K","" "$ ,"-"! ""3K","" "$ ,"-"! ""3A$ #$!$"
A$ 3$&'#&/$'
A$#"/$-
L"/$'" "# !6' "$
A$ ""3
-
7/21/2019 03-Transpirasi, Absorbsi
11/28
"#anspi#asi
a$so#$si
siang malam siang malam
A , C
%& ' lay( sementa#a
C ' lay( te#(s
HU,UNGAN TRANSPIRASI - A,SOR,SI
M-"$-"2
S"
-"$L"2'
-
7/21/2019 03-Transpirasi, Absorbsi
12/28
STOMATA MEMBUKA/MENUTUP KARENA
PERUBAHAN KIMIA SEL PENUTUP
PERUBAHAN PO DAN PA
BEBERAPA TEORI
1. FOTOSINTESIS SEL PENUTUP
DIPERTANYAKAN
(TEORITIS) JML GLUKOSE TIDAK CUKUP UTK
MENGUBAH TURGOR
2. TEORI KLASIK (SAYRE, 1923)
PENGAMATAN
STOMATA MENUTUP KADAR PATI ,
BILA MEMBUKA MENJADI !!!!! ATAU HILANG
-
7/21/2019 03-Transpirasi, Absorbsi
13/28
-
7/21/2019 03-Transpirasi, Absorbsi
14/28
Me"anis&e )("aan st#&ata
Te#ri &e&)("a &en(t(.na st#&ata
STOMATA MEMBUKA/MENUTUP KARENA
PERUBAHAN KIMIA SEL PENUTUP
PERUBAHAN PO DAN PA
1. T&$ /6"3" /"$ !",$ -"
PATI " P# GLUKOSE$1$P
GLUKOSE " P#
MALA
M
%H&$'
SIANG
%H($)
P*+%*+-#0
CO2"H2O H2CO3 H"" HCO3$
-
7/21/2019 03-Transpirasi, Absorbsi
15/28
/0 Te#ri .en+an+"(tan .r#t#n1 K2
S&!"" !!6#" 6$-" $& K>"#!-"'$ ,$ '- //'3$" PA ,"3 !"#" "$6,$*'$ ,"$ '- ""
C"3"2" !"#$6"#" $& K>
,$ '- // ,$/$,"3#" #!/" -"/ (-"$ '-) /","-!+ /"#+ 9&$* ?!&&$-@ ,$#&$- /","66""$ &"
P"," '"" $& K> !"'#+'!-"3$& H> #-" ,"$ '- //
H> 6"'"- ,"$ "'"! &"$#2
http://croptechnology.unl.edu/printImage.cgi?ID=1095700987 -
7/21/2019 03-Transpirasi, Absorbsi
16/28
P"#" "$# ," ," ,$*'$"$ "" '-
P2"/" ,"/"#" "$+
3"" P"#"
"'$!$-" M!6"
#-6$3" "$ P"" 6#""
'&!"" M!/"3"#"
'3 ,"
Peranan trans.irasi
-
7/21/2019 03-Transpirasi, Absorbsi
17/28
S2"" #$!$" 2" ,$6$#" /","
""!" ," " #!
-
7/21/2019 03-Transpirasi, Absorbsi
18/28
AIR BERUPA TETES KELUAR DARIBAGIAN TUBUH TUMBUHAN
(HIDATODA)
BUKAN KARENA LUKA
TERJADI BILA
SUHU TANAH SUHU ATM.
AIR NAIK MELALUI DINDING SEL
KE RUANG ANTAR SEL AKHIRNYA
SAMPAI HIDATODA
PENYERAPAN AIR
-
7/21/2019 03-Transpirasi, Absorbsi
19/28
PENYERAPAN AIR
Sera.an 3A)s#r.si4
proses dima'a suatu parti(el terpera')(ap (edalam stru(tur suatu
media da' seola*-ola* me'+adi ba)ia' dari (eseluru*a' mediatersebut
Jera.an3A$s#r.si4
suatu proses dima'a suatu parti(el me'empel pada suatupermu(aa' a(ibat dari ada'a perbedaa' muata' lema* dia'tara
(edua be'da, se*i'))a terbe'tu( suatu lapisa' tipis parti(el-
perti(el *alus pada permu(aa' tersebut
MEKANISME PENYERAPAN AIR
AKTI;: !"6&-$9 "9$7$'
PASI;: &'!&'$'+ "$#" "'/$"'$
-
7/21/2019 03-Transpirasi, Absorbsi
20/28
POTENSIAL AIR TANAH
P > PO : PT : P" POTE#S!L"TR!KS
P" S+$ !#&EKS T#* "E"E$#$ !R
PS!R ? #!L! P" RE#&*
LE"P%#$ ? #!L! P" T!#$$!
KPS!TS LP#$#
PER"%K# !R T#*
!R +ER$ERK &L" T#* SECR L!R# "SS
;#$ &!KE#&L!K# OLE* PER+E TEK##
-
7/21/2019 03-Transpirasi, Absorbsi
21/28
!R %#T%K T%"+%*#
!R TERSE&! %#T%K T%"+%*# &!TE#T%K# OLE* P
'+%K# K&R !R(
K LE"P%#$? 3@A
K $EL%*? 1BA
#!L! P "S!#$0"S!#$ S"
'0 @52B "Pa(
P& KR TER&PT TEK## *!&ROSTT!K POS!T!-
"E#$*S!LK# TEK## KR @51 "Pa
L)% TR#SP!RS! T!#$$! +ERK!+T TEK## KR >
@5 SE$ &! %)%#$ T#"# TEK## *!&ROSTT!K
#E$T!-
-
7/21/2019 03-Transpirasi, Absorbsi
22/28
udara
rambut
akarudara
air
partikel
tanah
akar
+SORPS! !R
OLE* R"+%TKR
R%#$ %&R
"E#$E"+#$
!R &!+SORPS! OLE* KR
AIR MELALUI RAMBUT AKAR
-
7/21/2019 03-Transpirasi, Absorbsi
23/28
AIR MELALUI RAMBUT AKAR
DARI EPIDERMIS MENUJU ENDODERMIS KEMUDIAN KE
ASKULER
LAPISANCASPARY
ambut a(ar
.alur seluler
Lapisa' /aspar
e'dodermis
.alur
apoplas
floem
0ilem berdi'di')
sel tebal
JALUR APOPLASA$ 6"# !-"-$
,$,$ '- ,"" "" '-
JALUR SELULERTRANS MEMBRAN
A$ 6"#!!6' ,$,$
," !!6" '-SIMPLAS
A$ 6"# ,"$ '"'- # '- -"$ !-"-$
/-"'!&,'!""
-
7/21/2019 03-Transpirasi, Absorbsi
24/28
Sel 1 Sel 2
Sel 1 Sel 2
membran
plasma
dinding sel
pla
smod
esma
&esmotubul
annulus
retikulum
endoplasmadinding sel
membranplasma
plasmodesma
retikulum
endoplasma
desmotubul
annulus
-
7/21/2019 03-Transpirasi, Absorbsi
25/28
%#S%R
D!LE"
TRK*E!&
%#S%R T+%#$
"E#;"+%#$ &$
TRK*E!& SES"
T+%#$
T+%#$ ;#$
+ERS"+%#$#
lubang
piringan perforasi
lubang
-
7/21/2019 03-Transpirasi, Absorbsi
26/28
tabung
terkaFitasi
emboli
ujung
tabung dg
lubang
lubang
piringan
perforasi
E#ER$! TR#SPORTS!
!R &R! KR KEP%C%K T#"#
)TEK## KR
)$; KP!LER
)TEOR! TE$#$#
KO*ES!
)$R&!E# POTE#S!L
#TR SEL0SEL &%#
&$ SEL0SEL +$!#
+G*
P"#" "$="'/&"'$ "$
-
7/21/2019 03-Transpirasi, Absorbsi
27/28
s(at( .r#ses .er+era"an air &e%e5ati.e&)(%(* 6i%e& $ari siste& .era"aran "e
)a+ian ta7(" tana&an1 "*(s(sna$a(n
P"#" "$="'/&"'$ "$
80 TEORI 9ITAL
/0 TEORI TEKANAN AKAR
/", !&7! &* " "#' /-"9, & "9$7$2 &* -$7$ 9--' &* /-"
6&,$ 2-!
S&9#$ (1) 3"' ,F, &&/'' "': " /'' ,7-&/, $ 3"93"2 -!' &* 2-! "' " '-
&* !"6&-$9 "9$7$$' &* 3 &&
-
7/21/2019 03-Transpirasi, Absorbsi
28/28
0 TEORI KEKUATAN !ISIKA 3TRANSPIRASIDAN KOHESI4