• 한국산림과학회지
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• 제87권2호
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• pp.194-200
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• 1998

천연림내의 참나무류와 자연 수분된 종자 및 인공적인 종간 교잡 종자를 양묘해서 키운 묘목의 종 및 잡종 간의 개아기(開芽期) 차이를 조사하였다. 금산연습림(禁山演習林)의 천연림에서 개아(開芽)는 Q. crispula > Q. anguste-lepidota > Q. takatorensis ${\fallingdotseq}$ Q. serrate > Q. dentata 순으로 진행되었다. 자연 수분된 종자로 양묘한 묘목에서는 Q. aliena ${\fallingdotseq}$ Q. crispula > Q. anguste-lepidota > Q. takatorensis ${\fallingdotseq}$ Q. serrate > Q. dentata 순으로 개아(開芽)하였다. 종간 교잡의 묘목에서 $F_1$의 개아기(開芽期)는 양친종의 사이에 속했지만, 개아기(開芽期)가 빠른 양친의 영향을 보다 크게 받는 것으로 나타났다. 종간교잡의 결과를 통해서 추정할때 참나무류의 개아기(開芽期)의 빠르고 느린 특성은 유전적인 지배를 받아, 후대에 유전되는 것으로 사료된다.

• 한국환경생태학회지
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• 제29권2호
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• pp.145-161
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• 2015

This research was conducted in order to understand the hybridization between Quercus aliena Blume and Q. serrata Murray in Korea which show wide range of morphological variations within species and interspecific variations of diverse overlapping characteristics caused by hybridization. Morphological analysis (principal components analysis; PCA) of 116 individuals representing two species and their intermediates were performed. As a result, two species were clearly distinguished in terms of morphology, and intermediate morpho-types assumed to be hybrids between the two species were mostly located in the middle of each parent species in the plot of the principal components analysis. There was a clear distinction between two species in trichome distribution pattern which is an important diagnostic character in taxonomy of genus Quercus, whereas intermediate morpho-types showed intermediate state between two species' trichome distributions. Forty-two individuals representing two species and their intermediates were examined for leaf flavonoid constituents. Twenty-three flavonoid compounds were isolated and identified: They were glycosylated derivatives of flavonols, kaempferol, quercetin, isorhamnetin and myricetin. The flavonoid constituents of Q. aliena were five glycosylated derivatives: kaempferol 3-O-galactoside, kaempferol 3-O-glucoside, quercetin 3-O-galactoside, quercetin 3-O-glucoside, and Isorhamnetin 3-O-glucoside. The flavonoid constituents of Q. serrata had 20 diverse flavonol compounds including five flavonoid compounds found in Q. aliena. It was found that there is a clear difference in flavonoid constituents of Q. aliena and Q. serrata. Flavonoid chemistry is very useful in recognizing each species and putative hybrids. The flavonoid constituents of intermediates were a mixture of the two species' constituents and they generally showed similar characteristics to morpho-types. The hybrids between Q. aliena and Q. serrata showed morphologically and chemically diverse characteristics and it is assumed that there are frequent interspecific hybridization and introgression.

• 한국연초학회지
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• 제16권2호
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• pp.102-107
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• 1994

This study was conducted to transfer the potato virus Y-necrosis strain resistance from Nicotiana africana to Nicotiana tabacum (cv. NC82) N. africana was crossed with NC82, GErmination of the cotyledon stage, at which time most of the seedling died. However, surviving seedlings continued to grow normally. Chromosomes of the these interspecific self-sterile F1 hybrids were doubled by tissue culture. Amphidiploid of F1 hybrid was self-fertile. Starting with amphidipliod, a wystematic backcross (BC) program was set up with NC82 as recurrent parent. In the BC5C2 generation, the resistant plant was selected. This resistant line, KF8833-1, had 48 chromosome and secreting glandular trichomes. It flowered 2days later than NC82, and stalk height, leaves per plant, leaf length and leaf width were similar to those of NC82.

• 한국수산과학회지
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• 제54권2호
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• pp.170-179
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• 2021

This study was conducted to identify taxonomic differences in the characteristics of Acheilognathus majusculus and A. yamatsutae during their initial life history via an interspecific hybridization experiment. Hatching time required 36 h for MY and 49 h for YM at 21.5℃, showing a significant difference of 13 h between the hybrids. The hatching rates of the cross-bred eggs were 30% for cross MY (A. majusculus♀×A. yamatsutae♂) and 40% for cross YM (A. yamatsutae♀×A. majusculus♂). The hatching larvae size was total length 3.13-3.43 mm in MY and total length 3.89-4.22 mm in YM, which was larger in YM. The hybridization test between A. yamatsutae and A. majusculus that live in the same water stream confirmed that no interspecific reproductive isolation occurred.

• 한국자원식물학회지
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• 제22권3호
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• pp.266-272
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• 2009

Morphological characteristics of leaves, trichomes and acorns were investigated in 6-year-old artificial hybrids of Q. aliena ${\times}$ Q. mongolica var. crispula and Q. serrata ${\times}$ Q. mongolica var. crispula. Leaf shapes of Q. aliena ${\times}$ Q. mongolica var. crispula $F_{1}$ were obovate and resembled to that of Q. aliena. But several characters including the size of leaf and petiole and the shape of leaf base resembled to those of Q. mongolica var. crispula. In F1 hybrids, small stellate hairs distributed sparsely on the abaxial surface and their lay length was intermediate between both parents. There were no big differences on characters of nuts and cupules between both parents and $F_{1}$ hybrids. Leaf shapes of Q. serrata ${\times}$ Q. mongolica var. crispula $F_{1}$ were obovate-elliptic, and the leaf shape and leaf base and the length of petiole resembled to those of Q. mongolica var. crispula, but leaf size and serration resembled to those of Q. serrata. The number of serration in a leaf was intermediate between both parents. Small stellate hairs distributed sparsely and large single hairs were mixed on the reverse side of leaves. there were no big differences on the number and size of stellate hairs between $F_{1}$ hybrid and Q. serrata. It is able to distinguish $F_{1}$ hybrids from both parents by the size leaf size and shapes, leaf base and serration, petiole length and trichome type in the leaf.

• 한국응용곤충학회지
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• 제58권4호
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• pp.305-311
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• 2019

동소동속종인 팥나방(Matsumuraeses phaseoli)과 어리팥나방(M. falcana)(나비목: 잎말이나방과) 사이에 교잡 가능성을 알아보기 위해서 실험실에서 인위적으로 두 종을 교잡시켰다. 두 종의 암수를 교차하여 교미시켰을 때, F1 잡종세대가 발생하였다. 두 잡종세대 집단을 집단 내 및 집단 간 암수를 교차하여 교미시킨 경우들에서, 팥나방 암컷과 어리팥나방 수컷이 교잡되어 생성된 F1 잡종세대 집단(H집단)의 암컷이 같은 집단의 수컷 혹은 다른 집단의 수컷과 교미되었을 때, F2 후대를 거의 생성하지 못했다. 다른 집단으로 만들어진 F2 세대는 집단 내 교미에서 F3 세대를 생성시켰다. F1 잡종세대 집단 암수와 팥나방 혹은 어리팥나방 암수를 각각 교차하여 교미시킨 역교잡 8개 집단 중에서도 H집단의 암컷과 짝지어진 어미세대 수컷 집단 2개는 전혀 산란하지 못했다. 후대가 생성된 다른 6개 집단은 모두 집단 내 암수 교미에서 역교잡 F2 세대를 생성하였다. 이 결과는 팥나방 암컷과 어리팥나방 수컷이 교미하였을 경우 F1 후대잡종을 생성할 수 있으나, 이 F1 후대잡종 암컷은 불임이 되는 것을 나타냈다. 결과적으로 두 종 사이에 접합후 생식단계에서 부분적인 생식격리가 발생할 수 있는 것을 나타냈다.

• Journal of Plant Biology
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• 제11권1호
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• pp.33-37
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• 1968

Present investigation was carried out in order to make clear the fertility, morphological characters, and chromosome numbers of interspecific hybrids of Chrysanthemum Zauadskii, C. indicum, and C. lavandulaefolium. 1. Hybrids were not self-pollinated. When sib-crossed the fertility was 1.3~19.3%. 2. F2 individuals were variable in their morphological Characters. 3. Chromosome numbers of three putative parents were different from those reported previously: C. zawadskii 2n=36, C. indicum 2n=20, C. lavandulaefolium 2n=16, $C. indicum{\times}C. zawadskii 2n=28, C. zawadskii{\times}C. indicum-1 2n=28, C. zawadskii{\times}C. indicum-2 2n=28, C. zawadskii{\times}C. indicum-3 2n=28, C. zawadskii{\times}C. indicum-4 2n=28, C. zawadskii{\times}C. indicum-5 2n=28, C. zawadskii {\times}C. lavandulaefolium-1 2n=26, C. zawadskii{\times}C. lavandulaefolium-2 2n=26.$

• 한국작물학회:학술대회논문집
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• 한국작물학회 2000년도 추계 학술대회지
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• pp.202-203
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• 2000

• 한국작물학회:학술대회논문집
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• 한국작물학회 1998년도 춘계 학술대회지
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• pp.41-42
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• 1998

• 한국산림과학회지
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• 제64권1호
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• pp.47-51
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• 1984

미국(美國) 남부(南部)소나무류(類) 중(中)에서 Pinus rigida, Pinus taeda, Pinus serotina 세 수종간(樹種間)의 교잡종(交雜種)들의 개발(開發) 가능성(可能性)을 검토(檢討)하기 위하여 전북지역(全北地域)에 식재(植栽)된 13년생(年生) 시험림(試驗林)을 대상(對象)으로 하여 생장(生長)과 몇가지 형질(形質)을 조사(調査)한 결과(結果)는 다음과 같다: 1) 종간(種間) 교잡종중(交雜種中)에서 P. rigida와 P. taeda 간(間)의 교잡종(交雜種)들의 생장(生長)이 우수(優秀)하였으며, 특(特)히 P. taeda ${\times}$ P. rigida의 생장(生長)은 전북지역(全北地域)에서 그 우수성(優秀性)이 입증(立證)되었다. 2) P. taeda의 생존율(生存率)이 극(極)히 낮았는데, 이것은 내한력(耐寒力)이 약(弱)한 것에 기인(基因)한 것으로 보인다. 3) 재적생장(材積生長)은 구과(毬果)의 폭(幅) 및 길이, 엽(葉)과 엽초(葉鞘)의 길이와 고도(高度)의 상관관계(相關關係)가 있었다. 4) Cluster 분석(分析) 결과(結果) 교잡종(交雜種)들은 일반적(一般的)으로 양친수(兩親樹) 사이에 위치(位置)하였다.