Odbojni spektri listov navadne streluše (Sagittaria sagittifolia)

Povzetek

Ključne besede

Podatki

Jezik:	Slovenski jezik
Leto izida:	2012
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL BF - Biotehniška fakulteta
Založnik:	[M. Pančić]
UDK:	58(043.2)
COBISS:	9261897
Št. ogledov:	841
Št. prenosov:	183
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Reflectance spectra of the species Sagittaria sagittifolia
Sekundarni povzetek:	The measurements of reflectance were performed on submersed, natant and terrestrial leaves of species Sagittaria sagittifolia. Reflectance was measured within the range of 280 – 800 nm. Specific leaf area, leaf structure, stomata length and density, amount of pigments and UV-absorbing compounds were also determined. The goal was to examine variability of reflectance spectra and to investigate the impact of leaf morphological and biochemical parameters on reflectance. The results showed that Sagittaria sagittifolia leaves were statistically different in both types of parameters. That resulted in reflectance spectra, namely the most similar were spectra in visible region, where reflectance is primarily controlled by leaf pigments. Leaf reflectance spectra differed more in UV and NIR (700 – 800 nm) regions, which are probably the result of anatomical, morphological and some biochemical variability. The biggest difference was observed between submerged and natan leaves. Natan leaves had higher reflectance in UV region and also in the green region of the optical spectrum than submerged and terrestrial leaves. Terrestrial leaves had the highest and submerged leaves lowest reflectance in NIR region, which was probably the result of different leaf anatomy.
Sekundarne ključne besede:	botany;botanika;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. Ljubljana, Pedagoška fak., Kemija in biologija, Biotehniška fak., Fak. za kemijo in kemijsko tehnologijo, Naravoslovnotehniška fak.
Strani:	X, 44 f., [1] f. pril.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Reflectance spectra of the species Sagittaria sagittifolia
Ključne besede (ePrints):	odbojnost
Ključne besede (ePrints, sekundarni jezik):	reflectance
Povzetek (ePrints):	Proučevali smo odbojnost listov navadne streluše (Sagittaria sagittifolia). Meritve smo opravljali na potopljenih, plavajočih in kopenskih listih. Izmerili smo odbojnost listov v območju od 280 do 800 nm. Določili smo tudi specifično listno površino, analizirali zgradbo lista, določili število in velikost listnih rež ter vsebnost barvil in UV absorbirajočih snovi. Želeli smo raziskati variabilnost odbojnih spektrov in ugotoviti, v kakšni meri lahko izbrane morfološke in biokemijske lastnosti lista razložijo odbojnost. Rezultati so pokazali, da so se listi navadne streluše večinoma statistično značilno razlikovali v obeh tipih lastnosti. S temi ugotovitvami je bila skladna odbojnost lista, saj so bili spektri najbolj podobni v vidnem območju, kjer odbojnost v glavnem določajo barvila, precej pa so se razlikovali v UV in NIR (700 – 800 nm) območju, kar je verjetno posledica različnih anatomskih, morfoloških in nekaterih biokemijskih lastnosti. Najbolj sta se razlikovala potopljeni in plavajoči list navadne streluše. Plavajoči listi so imeli v UV območju višjo odbojnost kot potopljeni in kopenski listi, prav tako v zelenem delu vidnega spektra. V NIR območju je bila odbojnost kopenskih listov največja, potopljenih pa najmanjša, kar pripisujemo različni zgradbi lista.
Povzetek (ePrints, sekundarni jezik):	The measurements of reflectance were performed on submersed, natant and terrestrial leaves of species Sagittaria sagittifolia. Reflectance was measured within the range of 280 – 800 nm. Specific leaf area, leaf structure, stomata length and density, amount of pigments and UV-absorbing compounds were also determined. The goal was to examine variability of reflectance spectra and to investigate the impact of leaf morphological and biochemical parameters on reflectance. The results showed that Sagittaria sagittifolia leaves were statistically different in both types of parameters. That resulted in reflectance spectra, namely the most similar were spectra in visible region, where reflectance is primarily controlled by leaf pigments. Leaf reflectance spectra differed more in UV and NIR (700 – 800 nm) regions, which are probably the result of anatomical, morphological and some biochemical variability. The biggest difference was observed between submerged and natan leaves. Natan leaves had higher reflectance in UV region and also in the green region of the optical spectrum than submerged and terrestrial leaves. Terrestrial leaves had the highest and submerged leaves lowest reflectance in NIR region, which was probably the result of different leaf anatomy.
Ključne besede (ePrints, sekundarni jezik):	reflectance
ID:	8310380