Spolni dimorfizem kranjske kozje češnje (Rhamnus fallax Boiss.) na območju Javornikov : diplomsko delo - univerzitetni študij

Černigoj, Manca (author), Brus, Robert (mentor)

Kranjska kozja češnja (Rhamnus fallax Boiss.) je ena izmed štirih avtohtonih vrst iz rodu Rhamnus v Sloveniji. Glavni cilji raziskave so bili ugotoviti razmerje med spoloma, morfološka variabilnost in spolni dimorfizem kranjske kozje češnje, ki so bili raziskani na 9. raziskovalnih ploskvah na JV pobočju Javornikov v treh višinskih pasovih. V analizi je bilo skupno zajetih 270 grmov in 4890 listov. Preučevani so bili 4 znaki na grmih in 12 znakov na listih. Razmerje med spoloma je bilo na osmih od devetih ploskev močno v prid moških osebkov, le na ploskvi 3 je bilo ženskih osebkov več kot moških. Največji prispevek k variabilnosti listov je imela variabilnost znotraj grmov. Statistično značilen se je izkazal vpliv nadmorske višine na variabilnost pri znakih, ki izražajo predvsem velikost listov. Relativno najmanjše liste so imele ploskve v pasu nad 900 m, srednje velike liste ploskve v pasu pod 700 m, največje liste pa so imele ploskve med 700 - 900 m. Po obliki listov je najbolj izstopala ploskev 2, pri kateri so bili listi relativno najširši. Spolni dimorfizem vrste v raziskavi ni bil močno izražen.

• Language: Slovenian
• Keywords: Rhamnus fallax Boiss., kranjska kozja češnja, spolni dimorfizem, Javorniki, morfološke analize, drevesne vrste, dendrologija
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [M. Černigoj]
• Year: 2011
• Number of pages: IX, 62 str.
• PID: 20.500.12556/RUL-15969
• UDC: 630*18(043.2)=163.6
• COBISS.SI-ID: 3110566
• Publication date in RUL: 11.07.2014

Secondary language

• Language: Unknown

Abstract

Rhamnus fallax Boiss. is one of the four species from genus Rhamnus native to Slovenia. The main goal of this research was to determine sex ratio, morphological variability and sexual dimorphism of R. fallax, which was examined on 9 research fields in the Javorniki region considering three altitude bands. In the analysis 270 bushes in 4890 leaves were included and a total of 4 traits on the bushes and 12 traits on the leaves were measured. Sexratio was male biased in eight of nine fields, only field 3 was female biased. The largest source of variation of leaves was attributed to variation within bushes. Statistically significant was the effect of the altitude on thetraits which mainly describe leaf size. Relatively smallest leaves had the fields in altitude band over 900 m, fields under 700 m had medium sized leaves, relatively largest leaves had the fields between 700 - 900 m. With there latively widest leaves stands out filed 2. Sexual dimorphism wasn't clearly expressed in this study.