• Plant Resources
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• 제4권3호
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• pp.157-160
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• 2001

The wild Pyrus plants belong to the deciduous woody plants in Rosaceae family. Most are cultivated for fruit productions, but some for ornamental plants. There are 5 Pyrus species including Pyrus ussuriensis and 8 varieties cultivated in Korea. In Korea, these plants are populated near villages or on the hills, and they are easily propagated since their fruit are very juicy and quite big in size. Plant breeding to get improved cultivars is not difficult because the Pyrus plants are easy to cross breeding among its genus. Because not only this reason but there have been shown lots of variation in wild groups, the Pyrus plants inhabited in Korea are excellent deciduous woody plants and favorable fruit trees to develop ornamental plants. It is necessary to develop many kinds of fruit trees and ornamental trees containing genetically different character, so that it will be satisfied for many different people's taste and demands. Collecting lots of wild plant resource with diverse genes is necessary for plant breeding.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2001년도 The 8th International Symposium
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• pp.15-19
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• 2001

The wild Pyrus plants belong to the deciduous woody plants in Rosaceae family. Most are cultivated for fruit productions, but some for ornamental plants. There are 5 Pyrus species including Pyrus ussuriensis and 8 varieties cultivated in Korea. In Korea, these plants are populated near villages or on the hills, and they are easily propagated since their fruit are very Juicy and quite big In size. Plant breeding to get improved cultivars Is not difficult because the Pyrus plants are easy to cross breeding among its genus. Because not only this reason but there have been shown lots of variation in wild groups, the Pyrus plants inhabited In Korea are excellent deciduous woody plants and favorable fruit trees to develop ornamental plants. It is necessary to develop many kinds of fruit trees and ornamental trees containing genetically different character, so that it will be satisfied for many different people's taste and demands Collecting lots of wild plant resource with diverse genes is necessary for plant breeding.

• 한국응용곤충학회지
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• 제55권4호
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• pp.313-317
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• 2016

동소동속종인 복숭아순나방과 복숭아순나방붙이는 우리나라에서 여러 가지 과수의 주요 해충으로 알려져 있다. 본 연구에서 우리는 장미과(Rosaceae) 과수인 복숭아나무, 자두나무, 사과나무, 배나무, 모과나무의 과실을 가해하는 복숭아순나방과 복숭아순나방붙이 유충을 채집하여 분자동정법을 이용하여 종을 동정하여 과종별로 두 종의 분포 비율을 비교하였다. 유충을 동정한 결과, 복숭아 과실을 가해하는 종은 거의 대부분 복숭아순나방이었던 반면, 자두 과실을 가해하는 것은 모두 복숭아순나방붙이인 것으로 나타났다. 사과, 배, 모과 과실은 두 종이 상당하는 비율로 같이 분포하였는데, 사과와 모과에서는 복숭아순나방붙이에 의한 피해가 상대적으로 많았으나 유의한 우점은 발견되지 않았고, 배 과실에서는 복숭아순나방이 유의하게 우점하여 분포하였다. 이 결과들은 과수원에서 이 해충들의 합리적인 관리전략을 수립하는데 유용할 것이다.

• 환경생물
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• 제24권4호
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• pp.368-371
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• 2006

The complex analysis of male reproductive system of vines and fruit-tyees growing in zone of the Armenian Nuclear Power Plant (ANPP) is realized. The obtained data demonstrate that the homogeneous pollen with high fertility and optimal morphometric parameters in all variants is formed. The obtained results demonstrate that there is no one-sided effect of ANPP on the development and formation of investigated male generative system of vines and fruit trees. Thus, on the base of obtained results we can't confirm its deleterious effect on the environment.

• 한국균학회지
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• 제51권4호
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• pp.447-460
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• 2023

식물병원 세균 Erwinia amylovora 의해 발생하는 과수화상병은 사과, 배 등 장미과에 속하는 식물에 심한 피해를 주고 있다. 병의 빠른 확산을 막기 위해 국내에서는 병이 발생한 사과나무와 배나무에 대해 매몰하는 병관리를 실시해 왔다. 방제방법의 안전성을 입증하기 위해 매몰한 이병식물과 이병식물 주변의 토양을 조사하였다. 매몰토양 미생물군 조사과정에서 Bisifusarium allantoides, Botryotrichum Domesticum, Microascus verrucosus, Paraphoma pye, Phaeosphaeria culmorum, Ramophialophora globispora, Sordaria tomentoalba, Striaticonidium brachysporum 등이 국내 미기록종으로 확인되었다. 이에 이들 8종 진균에 대한 형태학적, 분자유전학적 특성을 보고한다.

• 농업과학연구
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• 제47권2호
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• pp.349-360
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• 2020

Fire-blight disease is a kind of contagious disease affecting apples, pears, and some other members of the family Rosaceae. Due to its extremely strong infectivity, once an orchard is confirmed to be infected, all of the orchards located within 100 m must be buried under the ground, and the sites are prohibited to cultivate any fruit trees for 5 years. In South Korea, fire-blight was confirmed for the first time in the Ansung area in 2015, and the infection is still being identified every year. Traditional approaches to detect fire-blight are expensive and require much time, additionally, also the inspectors have the potential to transmit the pathogen, Thus, it is necessary to develop a remote, unmanned monitoring system for fire-blight to prevent the spread of the disease. This study was conducted to detect fire-blight on pear trees using discriminant analysis with color information collected from a rotary-wing drone. The images of the infected trees were obtained at a pear orchard in Cheonan using an RGB camera attached to a rotary-wing drone at an altitude of 4 m, and also using a smart phone RGB camera on the ground. RGB and Lab color spaces and discriminant analysis were used to develop the image processing algorithm. As a result, the proposed method had an accuracy of approximately 75% although the system still requires many flaws to be improved.