• 제목/요약/키워드: different cultivar

검색결과 824건 처리시간 0.026초

주요 감품종의 저온내성에 관하여 (Cold Tolerance of Some Persimmon Cultivars Growing in Southern Part of Korea)

  • 신상철;정삼택;최석원;사공동훈;신성련
    • Current Research on Agriculture and Life Sciences
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    • 제20권
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    • pp.71-76
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    • 2002
  • 경북대학교 부속과수원에 재식되어 있는 봉옥, 기원방, 청도반시, 나주파시 품종의 휴면중인 1년생 가지를 2002년 1월에 채취하여 저온에 대한 내성을 검토한 결과 다음과 같은 결론을 얻었다. 1. 눈의 갈변도 측정에서는 $-15^{\circ}C$에서의 저온에 의한 갈변의 정도가 컸으며, 품종별의 차이는 나주파시의 경우 $-5^{\circ}C$일때의 저온에 대한 갈변의 정도와 $-15^{\circ}C$때와의 차이가 별로 없으며, 그 수치도 딴 품종에 비해 적었다. 2. 목질부의 갈변도 측정에서는 눈의 갈변도와 같은 경향으로 $-15^{\circ}C$일 때 피해가 컸으며, 품종별의 차이는 청도반시의 목질부에 대한 저온에 의한 갈변의정도가 딴 품종에 비해서 높았다. 3. 감의 주요 품종의 전기전도도를 보면 $-15^{\circ}C$일 때 전체적으로 저온의 피해가 컸으며, 나주파시와 봉옥의 경우 저온처리가 $-10^{\circ}C$이하일 경우에 E.C. 값이 다른 품종보다 눈에 띄게 큰 것으로 보아 이 품종은 저온에 대한 내성이 약하다는 것을 알 수 있다. 4. 눈의 맹아율은 $-15^{\circ}C$에서도 맹아가 되었으나 $-15^{\circ}C$일때의 맹아율이 타 온도보다 많이 적었는데, 나주파시의 맹아율이 가장 낮았으며, 기원방의 맹아율은 타품종에 비해 많이 높았다. 5. 위의 실험의 토대로 품종별 내한성의 차이를 전체적으로 비교한 결과 나주파시와 봉옥이 다른 품종보다 내한성이 낮으며, 기원방이 다른 품종보다 내한성이 높게 나타났었다.

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Influence of Plant Species and Environmental Conditions on Epiphytic and Endophytic Pink-Pigmented Facultative Methylotrophic Bacterial Populations Associated with Field-grown Rice Cultivars

  • Madhaiyan, Munusamy;Poonguzhali, Selvaraj;Sa, Tong-Min
    • Journal of Microbiology and Biotechnology
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    • 제17권10호
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    • pp.1645-1654
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    • 2007
  • The total methylotrophic population associated with rice plants from different cultivars was enumerated at three different stages: vegetative, flowering, and harvesting. The bacterial population in the leaf, rhizosphere soil, endophytic in the stem and roots, and epiphytic in the florets and grains were determined from four rice cultivars, Il-mi, Nam-pyeoung, O-dae, and Dong-jin, sampled from three different field sites. The methylotrophic bacteria isolated on AMS media containing 0.5% methanol as the sole carbon source uniformly showed three distinct morphologies, which were recorded as separate groups and their distribution among the various samples was determined using the ecophysiological index. The growth stage at the time of sampling had a more significant effect on the methylotrophic population and their distribution than the field site or cultivar. A similar effect was also observed for the PPFMs, where their population in different plant parts increased from V10 to R4 and then decreased towards stage R9. A canonical discriminant analysis of the PPFM population from different parts of rice showed clear variations among the cultivars, sampled sites, and growth stages, although the variations were more prominent among the growth stages.

Effects of Interactions Among Age, Cultivation Method (Location) and Population on Ginsenoside Content of Wild Panax Quinquefolium L. One Year after Transplanting from Wild

  • Lim, Wan-Sang
    • 한국약용작물학회지
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    • 제13권5호
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    • pp.254-261
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    • 2005
  • To evaluate the effects of cultivar, environment, age and cultivation times on ginsenoside content among 8 wild populations of American ginseng (Panax quinquefolium), the concentrations of 6 ginsenosides in root were determined at the time of collection (T0) of plants from the wild and 1 year after (T1) transplanting the roots to each of two different forest garden locations. Both location and population had significant effects on root and shoot growth. Overall, ginsenoside Rb1 was most abundant. The second most abundant ginsenoside were Re and Rg1, however the contents of them were not significantly different from each other. Concentrations of Rg1 and Re were inversely related. Ginsenoside Re was influenced by population and location. Ginsenoside Rg1, Rb1, Rc, Rb2 and Rd were influenced by population, location and age. Ginsenoside levels were consistently lower but growth was consistently higher at the more intensively managed garden location.

배지종류, 셀크기 및 비료종류가 호접란 플러그묘 생장에 미치는 영향 (Effects of Media, Cell Sizes and Fertilizers on the Growth of Phalaenopsis Plug Plants)

  • 정용모;빈철구;김진기;진영돈;정순재;권오창
    • 생명과학회지
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    • 제9권6호
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    • pp.665-670
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    • 1999
  • The effects of media, cell sizes and fertilizers on the early growth of Phalaenopsis plug plants were investigate. The sphagnum moss was more effective than other media in pink and white color cultivars. In comparison of different plug cell size, 50 cell size was more effective then 72 and 128 cell size in pink and white cultivar. In comparison of different fertilizer, margamf K in pink, and nutrient solution II(one time drenching with NHRI standard solution for three times irrigation) in white color cultivars was more effective then others, respectively.

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Comparison of ITS(Internal Transcribed Spacer) and 5.8S rDNA Sequences among varieties and Cultivars in Panax ginseng

  • Yang, Deok-Chun;Yang, Key-Jin;Yoon, Eui-Soo
    • Journal of Photoscience
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    • 제8권2호
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    • pp.55-60
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    • 2001
  • Ginseng (Panax genus) is one of the most medicinally important genera and consists of highly regarded medicines. Among the species of Panax, the ginseng species is widely known to have most medicinal quality. P. ginseng has 3 varieties, Jakyung, Chunggyung and Hwangsook, discovered in nature with different colors of stem and fruit, Jakyung has two cultivars, Yunpoong and Chunpoong. Rigorous phylogenetic analysis of these varieties and cultivars has been conducted with sequencing of rDNA region. The sequences of ITS1, ITS2 of every varieties and cultivars within P. ginseng were identical. The sequence of 5.8S rDNAs of Hwangsook variety were different from the sequences of 5.8S rDNAs of others by only one base pair at nucleotide position 14. In phylogenetic analysis and predicted RNA secondary structure study, it is assumed that evolution has proceeded from Hwangsook to other varieties. recently.

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황색고구마 퓨레의 품질과 Carotenoid색소 (Quality Properties and Carotenoid Pigments of Yellow Sweet Potato Puree)

  • 정순택;임종환;강성국
    • 한국식품영양과학회지
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    • 제27권4호
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    • pp.596-602
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    • 1998
  • Two kinds of sweet potato puree were prepared with Benihayato cultivar of yellow sweet potato with or without $\alpha$-amylase enzyme treatment. Chemical and rheological properties of enzyme-treated puree were different from those of control puree. Reducing sugar content and iodine value increased by $\alpha$-amylase enzyme treatment, while alcohol insoluble solids and viscosity decreased by enzyme treatment. However, the changes of carotenoid content were not significantly different. Hunter-b-values(yellowness) were 27.19 and 23.54 for no enzyme-treated puree(NTP) and enzyme-treated puree(ETP), respectively. Hunter-a values(redness) were 2.24 and 6.05 for NTP abd ETP, respectively. Content of total carotenoid of canned puree heated at 13$0^{\circ}C$ for 30 min decreased by 59 percents.

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Improved characterization of Clematis based on new chloroplast microsatellite markers and nuclear ITS sequences

  • Liu, Zhigao;Korpelainen, Helena
    • Horticulture, Environment, and Biotechnology : HEB
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    • 제59권6호
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    • pp.889-897
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    • 2018
  • Currently, there is a lack of genetic markers capable of effectively detecting polymorphisms in Clematis. Therefore, we developed new markers to investigate inter- and intraspecific diversity in Clematis. Based on the complete chloroplast genome of Clematis terniflora, simple sequence repeats were explored and primer pairs were designed for all ten adequate repeat regions (cpSSRs), which were tested in 43 individuals of 11 Clematis species. In addition, the nuclear ITS region was sequenced in 11 Clematis species. Seven cpSSR loci were found to be polymorphic in the genus and serve as markers that can distinguish different species and be used in different genetic analyses, including cultivar identification to assist the breeding of new ornamental cultivars.

몇 가지 키위 품종의 대목에 따른 접목 활착 특성 (Grafting Characteristics of Several Kiwifruit Cultivars as Affected by Rootstocks)

  • 김승희;강성구;박상근;곽용범
    • 현장농수산연구지
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    • 제22권1호
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    • pp.27-33
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    • 2020
  • 최근 다양한 키위 신품종이 육성, 보급되고 있다. 과수의 증식법은 무성번식의 한 종류인 접목이 많이 이용되고 있으며, 대목은 실생 대목을 많이 이용하고 있다. 키위 품종도 증식법으로 실생대목을 활용한 접목이 주로 이용되고 있다. 많은 키위 종 중에 상업적으로 재배되는 종은 크게 A. chinensis, A. deliciosa 2종이다. 최근 식이편의성을 위해 다래(A. arguta) 교잡종이 육성되는 등 종간 교배를 통한 품종이 육성되고 있다. 종이 다를 경우 접목 불친화성이 발현될 수 있기에 최근 육성된 골드품종과 교잡종의 대목에 따른 접목친화성을 알아보고자 하였다. 접목 50일 후 신초 신장량을 조사한 결과, 골드 3품종은 같은 종인 '괴밀(Kuimi)'을 대목으로 이용한 처리에서 1미터 정도로 가장 양호했고 종이 다른 대목에서는 신초신장이 억제되는 경향이었다. 다래(A. arguta) 교잡종 '스키니그린'은 모든 대목에서 1미터 정도자라 친화성이 좋은 것으로 보였다. 하지만, 이종간의 접목에서는 몇 년 뒤에 불친화성이 발현되기도 하기에 장기적인 추가 연구가 필요할 것으로 본다.

Effect of different pollen sources on fruit characteristics and quality in 'Niitaka' pears (Pyrus pyrifolia Nakai)

  • Lee, Ug-Yong;Ahn, Young-Jik;Chun, Jong-Pil
    • 농업과학연구
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    • 제44권1호
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    • pp.23-29
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    • 2017
  • This study was conducted to explore which pollen type could be an effective pollen source for self-incompatible 'Niitaka' pear (Pyrus pyrifolia Nakai), when different pollinizers were to be applied. The pollens of five different pears with similar flowering times were applied to bagged 'Niitaka' flowers grown in Cheonan city, Korea. Pollen types used were of different origins including Korean pears ('Wonhwang' and 'Chuhwangbae'), Japanese pears ('Chojuuro' and 'Okusankichi'), and Chinese pear ('Yali'). Results show that the amount of pollen produced by flowers of each cultivar was the largest in Korean pear 'Wonhwang' (234 g/100 flowers) and the smallest in Japanese pear 'Okusankichi' (126 g/100 flowers). A high proportion of large fruits (> 600 g), 71.4% of total production, was found in the fruits treated with 'Yali' pollen. However, these fruits showed an unfavorable external appearance. Based on individual fruit width differences, 'Chojuuro' treatment produced the smallest difference in fruit diameters (3.2 mm) and 'Yali' treatment' gave the largest (4.8 mm). Also, the difference in fruit length was the largest in 'Yali' (7.5 mm), which also produced the most uneven fruits among the pollinizers used. Meanwhile, the use of pollens of 'Wonhwang' and 'Chuhwangbae' improved productivity by increasing the fruit shape index and the ratio of bigger fruits in total production. Moreover, those pollens also decreased the development of lenticels on fruit skins which gave them a smoother appearance.

고접갱신이 복숭아 Y자 수형 조기 구성 및 생산성에 미치는 영향 (The Effect of Renewal Topworking on Early Y Shape Tree Formation and Yields in Peach Trees)

  • 윤익구;윤석규;전지혜;남은영;권정현;배해진;정경호;문병우
    • 생물환경조절학회지
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    • 제22권4호
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    • pp.366-370
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    • 2013
  • 복숭아 Y자 수형에서 기존 나무를 갱신할 때 고접갱신을 통해 조기에 수형을 완성하고 생산성을 유지할 수 있는 방법을 알아보고자 수행한 연구결과는 아래와 같다. 접목위치별 활착률은 원가지 내측에 접목하는 것이 80%로 외측의 73.3%에 비해 다소 양호하였고, 접목활착 후 발아된 신초의 기부직경은 내측이 36.2mm로 외측의 19.6mm에 비해 훨씬 굵게 자랐으며, 신초길이 역시 내측에 접목한 것이 220.3cm로 외측의 166cm에 비해 신초발육이 양호하였다. 고접갱신지는 개식수에 비해 수폭, 기부직경 및 결과지수 등에서 수체생장정도가 적은 것으로 나타났는데 수폭은 개식묘의 436.3cm에 비해 394.7cm에 불과하였고, 수고는 고접위치를 감안하면 고접갱신지가 1m 정도 낮았다. 수형구성을 위한 노력시간은 고접갱신지는 49.9시간/10a이었고, 개식묘는 51.5/10a로 두 처리 간 큰 차이를 보이지 않았지만, 고접갱신수의 경우 중간대목 품종의 관리시간 25.7시간/10a를 더하면 노력시간이 더 소요되는 것으로 나타났다. 수형구성을 위한 노력요소 중 적심>유인>도장지 제거 순으로 많았다. 3년간 누적수량은 처리 당년은 고접갱신수와 개식수 모두 생산량이 없었고 2년차는 고접갱신수의 생산량이 908kg/10a로 개식수 395kg/10a보다 훨씬 많았으나, 3년차에는 개식수의 수량이 고접수를 능가하였다. 그러나 고접수의 경우 중간대목 품종의 생산량을 합치면 개식수에서처럼 생산량의 공백 없이 매년 2,000kg 전후의 생산량을 유지할 수 있었다. 고접갱신 후 수량에 대한 손실보전을 위해 중간대목 품종을 3년에 걸쳐 연차적으로 갱신할 경우 과실수확을 위한 노동력, 과실봉지비, 농약비 및 수확, 선별 비용이 상대적으로 증가 되었지만, 수량증가와 더불어 개식에 따른 묘목비, 장비임대, 굴취비 및 지주시설 보수비용 등이 절감되어 매년 약 299만원/10a 정도의 소득적 이익이 발생하는 것으로 나타났다.