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Pomološke lastnosti avtohtonih genotipov pravega kostanja (Castanea sativa Mill.) na območju Dobovca pri Rogatcu
Mordej, Iztok (Author), Štampar, Franc (Mentor) More about this mentor... This link opens in a new window, Solar, Anita (Co-mentor)

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Abstract
Leta 2015 smo v analizo vključili 54 dreves kostanja z območja vasi Dobovec pri Rogatcu. Drevesa smo pregledali na morebitno okužbo s kostanjevim rakom (Cryphonectria parasitica (Murill) M.E. Barr) in napadenostjo s kostanjevo šiškarico (Dryocosmus kuriphilus Yasumatsu). Določili smo jim habitus in izmerili obseg debel. V pomološki analizi smo upoštevali naslednje lastnosti: višino, širino, debelino in maso plodov ter dolžino in širino hiluma. Po UPOV metodi smo plodovom določili barvo, obliko, penetracijo episperma v jedro in embrionijo. Povprečna višina plodov je bila 25,4 mm, povprečna širina 27,8 mm, povprečna debelina 16,9 mm, povprečna dolžina hiluma 19,9 mm, povprečna širina hiluma 10,7 in povprečna masa 8,0 g. Zabeležili smo velike razlike med povprečno najlažjimi in najtežjimi plodovi. Na opazovanem območju smo našli zelo raznolik rastlinski material. Najpogostejši so bili plodovi transverzalno eliptične oblike. Prevladovali so kostanji temno rjave barve. Stopnja penetracije episperma je bila v večini primerov šibka do srednja. Prižastih plodov nismo zasledili. V veliki večini so prevladovali monoembrionalni plodovi. V nadaljnjo selekcijo predlagamo genotipe, ki presegajo maso 10 g, imajo šibko penetracijo episperma v jedro in so manj dovzetni za napade kostanjeve šiškarice in okužbe s kostanjevim rakom. Eno ali več naštetih lastnosti smo zabeležili pri dvanajstih genotipih.

Language:Slovenian
Keywords:pravi kostanj, avtohtoni genotipi, pomološke lastnosti, kostanjeva šiškarica, odpornost rastlin
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2017
Publisher:[I. Mordej]
UDC:634.53:631.526.32(043.2)
COBISS.SI-ID:8866425 This link opens in a new window
Views:773
Downloads:585
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Secondary language

Language:English
Title:Pomological characteristics of some autochthonous genotypes of european sweet chestnut (Castanea sativa Mill.) in area of Dobovec pri Rogatec
Abstract:
In 2015, 54 chestnut trees from the village of Dobovec pri Rogatec were included into the analysis. Trees were examined for a possible symptoms of chestnut blight (Cryphonectria parasitica (Murill) M.E. Barr) and chestnut gall wasp (Dryocosmus kuriphilus Yasumatsu). We determined tree growth habit and measured circumference of the trunk. In pomological analysis we observed the following characteristics: height, width, thickness and the weight of the fruit, as well as length and width of the hilum. Using the UPOV method, we determined the fruit: color, shape, penetration of episperm and embryony. The average height of the fruits was 25.4 mm, average width 27.8 mm, average thickness 16.9 mm, average mass 8,0 g, average length of the hilum 19.9 mm and average width of the hilum 10.7 mm. We recorded large differences between average lightest and average heaviest fruits. We found diverse plant material. The most common shape of the fruits was transversaly elliptical. The majority of chestnuts were dark brown. The penetration of episperm into the embrio was weak to moderate in most cases. Striped fruits have not been observed. Great majority of the fruits were monoembryonic. Genotypes which have heavier fruits than 10 g, weak penetration of episperm into the embrio, low susceptibility to chestnut blight and chestnut gall wasp are suggested to be included into further selection. At least one of the listed properties were recorded in twelve genotypes.

Keywords:european sweet chestnut, Castanea sativa, autochthonous genotypes, pomological analysis

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