• Title/Summary/Keyword: GENETIC RESOURCES

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Development of Superovulation Method in Korean Native Goats (한국 재래산양의 과배란 처치 방법 개선)

  • C. Y. Choi;D. S. Son;Y. K. Kim;M. H. Han;U. G. Kweon;S. H. Choi;Y. H. Choy;S. B. Choi;Y. M. Cho
    • Journal of Embryo Transfer
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    • v.19 no.1
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    • pp.61-66
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    • 2004
  • 한국 재래산양 체내수정란 생산에 대한 발정동기화 및 과배란 유도방법과 회수된 수정란의 동결 융해 후 생존율을 조사하였다. 발정동기화를 위해 CIDR+FSH 및 CIDR+PMSG의 방법을 이용한 결과, 배란점 및 회수된 수정란의 수는 CIDR+FSH 처리구에서 16.3개 및 9.4개, CIDR+PMSG 처리구에서 16.4개 및 8.7개를 나타내어 두 처리구간에 유의적 차이는 인정되지 않았다. 회수된 수정란을 형태학적으로 평가한 결과 CIDR+FSH 처리구에서 Gade A, B, C 및 D는 75.8%, 15.2%, 4.5% 및 4.5%를 나타낸 반면 CIDR+PMSG 처리구에서는 52.5%, 16.4%, 16.4% 및 14.8%였으며, 이식 가능한 수정란 (Grade A, B) 수는 CIDR+FSH 처리구가 유의적(P<0.05)으로 높게 나타났다. 회수된 수정란의 완만 동결 융해 후 생존성은 CIDR+FSH 처리구에서 73.3%, CIDR+PMSG 처리구에서 63.3%이었으며, 두 군간의 유의적차이는 인정되지 않았다. 따라서 본 결과는 한국 재래산양 체내수정란의 생산과 회수된 수정란의 보존을 위해서 CIDR+FSH로 발정동기화 시키는 것이 효과적이었다.

A New Potato Cultivar "Early Valley", with High Yield and Early Maturity

  • Lim, H.T.;Dhital, S.P.;Khu, D.M.;Choi, S.P.;Kang, C.W.;Kim, T.J.;Mo, H.S.;Hwang, W.N.;Lee, W.J.
    • Korean Journal of Breeding Science
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    • v.41 no.1
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    • pp.61-67
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    • 2009
  • "Early Valley", is an early maturing potato cultivar with high yield potential. "Early Valley" is a clonal selection resulting from the cross between 'Suncrisp' and 'A87109-10'. It has medium plant height and light green foliage. "Early Valley" has medium flowering habit and white flowers. Tubers are smooth, yellow skin, light yellow flesh, round tuber shape, medium eye depth, and medium dormancy and good keeping quality. It has stable yield under wide range of climatic conditions. "Early Valley" is resistance to late blight, but moderately susceptible to common scab and hollow heart. This cultivar is also resistant to potato rotting at harvesting during the raining season. "Early Valley" has high level of antioxidant activity (about three times higher) and vitamin C (higher by 40%) than the 'Superior'. This cultivar has high level of tuber uniformity and capable of yielding 36.56 t/ha which is 17.07% higher than the control potato cultivar 'Superior' under optimum agronomical practices.

Factors affecting the estimation of antler production in elk deer (Cervus canadensis)

  • Jeon, Dayeon;Lee, Sang-Hoon;Lee, Jinwook;Lee, Yong-Jae;Lee, Sung-Soo;Roh, Hee-Jong;Kim, Dong-Kyo;Dang, Chang-gwon;Kim, Sang-Woo;Kim, Kwan-Woo
    • Korean Journal of Agricultural Science
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    • v.46 no.3
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    • pp.497-506
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    • 2019
  • The aim of this study was to estimate the factors that can be used as a predictive indicator of antler productivity in elk. Body weight and antler data from 115 stags raised at the Animal Genetic Resources Research Center in Korea were used in this study. The function for the average antler weight was derived by age, which was $y=-3.4693+5.3747x-0.8x^2+0.0424x^3$, and $R^2$ was 0.991. The analysis of the relationship between body weight at birth and the 1st and 2nd year and the antler weight after the 2nd year showed a correlation between them. There was a correlation between the antler weight of 1 and 2 year old stags and the weight of 2 year old stags as well; especially, both antler weights for the 1st and 2nd year were highly correlated with the antler weight of the 4th year. However, there was no relationship between the antler main beam length for the 1st and 2nd year and the antler weight after the 3rd year. Therefore, it is expected that a large amount of antler will be obtained in the future if proper management is carried out for young deer from birth to 2 years old. Additionally, the results of this study are expected to be useful for the development of a deer breeding program and the deer industry.

Two New Phenolic Compounds from the Fruiting Bodies of Ganoderma tropicum

  • Hu, Li-Li;Ma, Qing-Yun;Huang, Sheng-Zhuo;Guo, Zhi-Kai;Guo, Jian-Chun;Dai, Hao-Fu;Zhao, You-Xing
    • Bulletin of the Korean Chemical Society
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    • v.34 no.3
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    • pp.884-886
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    • 2013
  • Chemical investigation of the fruiting bodies of Ganoderma tropicum led to the isolation of two new phenolic compounds, ganodermatropins A (1) and B (2). Their structures were elucidated by spectroscopic techniques (MS, 1D and 2D NMR). Ganodermatropin A exhibited antimicrobial activity against Staphylococcus aureus.

Variation in Flower Color among Hybrids of Jeoktanshim Hibiscus syriacus L

  • Park Hyung-Soon;Cho Yoon-Jin;Chung Hun-Gwan;Jang Yong-Suk;Chung Dong-Jun
    • Plant Resources
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    • v.8 no.3
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    • pp.250-257
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    • 2005
  • This study was performed to provide basic information of the development and breeding of new cultivars of Hibiscus syriacus L., which have more beautiful and diverse flowers. Morphological characteristics of the flowers and leaves, and genetic variation of the flowers color of two Jeoktanshim-line cultivars, Bulsae and Pyungsung, were crossed each other. The result of the cross between Bulsae and Pyungsung are as follows: Mean flower height and width were 5.35 cm and 7.69 cm, respectively. Mean length and width of petal were 5.43 cm and 3.80 cm respectively, and mean length and width of flower pistil were 4.67 cm and 0.44 cm, respectively. The flower color of all ten individuals was the color of the Jeoktanshim-line, and Pyungsung, and all flower type were I-c type.

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Genetic Variation and Phylogenetic Relationships of Indian Buffaloes of Uttar Pradesh

  • Joshi, Jyoti;Salar, R.K.;Banerjee, Priyanka;Upasna, S.;Tantia, M.S.;Vijh, R.K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.9
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    • pp.1229-1236
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    • 2013
  • India possesses a total buffalo population of 105 million out of which 26.1% inhabit Uttar Pradesh. The buffalo of Uttar Pradesh are described as nondescript or local buffaloes. Currently, there is no report about the genetic diversity, phylogenetic relationship and matrilineal genetic structure of these buffaloes. To determine the origin and genetic diversity of UP buffaloes, we sequenced and analysed the mitochondrial DNA D-loop sequences in 259 samples from entire Uttar Pradesh. One hundred nine haplotypes were identified in UP buffaloes that were defined by 96 polymorphic sites. We implemented neutrality tests to assess signatures of recent historical demographic events like Tajima's D test and Fu's Fs test. The phylogenetic studies revealed that there was no geographic differentiation and UP buffaloes had a single maternal lineage while buffaloes of Eastern UP were distinctive from rest of the UP buffaloes.