• 제목/요약/키워드: $F_1$ hybrids

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Burly(Nicotiana Tabacum L.Cv Burley)종의 세포질적 웅성불임계통을 이용한 $F_1$ 잡종 이용 (Studies on the Utilization of $F_1$ Hybrids using Cytoplasmic Sterility in Burley(Nicotiana tabacum L. Cv Burley) Tobacco.)

  • 한철수;조천준;김용연;이규상
    • 한국연초학회지
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    • 제2권1호
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    • pp.28-37
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    • 1980
  • 버어리種 담배에 있어서 細胞質的 雄性不稔系統을 利用한 F1雜種 利用 可能性을 究明하고자 MS Burley21$\times$Burley37外 20個 F1雜種을 育成하여 生産力 檢定試驗을 實施한 結果 MS L8$\times$Burley49, MS Kentucky12$\times$kentucky10等 4個의 F1雜種에서 現 栽培品種인 Burley21보다 수량은 2 ~11%, 품질은 1 ~5%의 증가를 보였다.

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고추의 친품종 및 품종간 잡종의 과실수량과 형태적 특성 (Fruit Yield and Morphological Characters of Parental Cultivars and Intervarietal Hybrids of Capsicum annuum L.)

  • 조만현
    • 생명과학회지
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    • 제6권4호
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    • pp.219-226
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    • 1996
  • 고수량. 고품질의 고추 신품종을 육성하기 위해 피만의 'California Wonder'와 일본재래종 4품종, 이들의 F$_{1}$ 잡종 12조합 그리고 한국의 F_{1} 3품종을 공시하고, 과실수량과 형태적 특성에 관하여 검토했다. 그 결과 'California Wonder'와 일본재래종간 교잡에 의해 얻어진 F$_{1}$ 잡종은 친품종보다 3일 먼저 개화했다. F$_{1}$ 잡종은 특히 'California Wonder'가 편친이었을 때 친품종보다 고수량 이었다. 또한 일과중도 증가하는 경향 이었다. F$_{1}$ 잡종중에서 'California Wonder' 와 'Fushimi Amanaga' 간 잡종이 가장 고수량 이었다. 자실수와 종자수는 'California Wonder'가 편친이었을 때 친품종보다 많았다. 초장은 친품종보다 F$_{1}$ 잡종이 큰 경향 이었다.

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낙엽성(落葉性) 참나무류 인공교잡(人工交雜) 묘목(苗木)의 엽형(葉形) 특성(特性)(II) (Leaf Morphological Characteristics of Artificial Hybrids on Some Deciduous Quercus Taxa(II))

  • 이정호;권기원
    • 한국산림과학회지
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    • 제89권1호
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    • pp.18-23
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    • 2000
  • 3~5년생 참나무류 인공잡종 묘목의 잎의 형태를 조사하였다. Quercus serrata, Q. dentata, Q. crispula, Q. aliena간의 교잡 $F_1$에 대한 잎의 크기(잎의 길이, 잎의 넓이)는 많은 조합에서 양친종의 중간 크기였다. 잎자루 길이는 Q. aliena ${\times}$ Q. crispula $F_1$이 가장 작았고, Q. aliena ${\times}$ Q. serrata $F_1$, Q. dentata ${\times}$ Q. aliena $F_1$은 양친종의 중간이었다. $F_1$의 결각의 수는 교배모수에 가까운 것이 많았다. 결각의 깊이와 잎의 형상비는 양친종 중간의 것이 많았다.

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버어리종 논담배용 품종 선발시험 (SELECTION OF BURLEY TOBACCO FOR PADDY FIELD)

  • 류점호;조천준;한철수;류익상
    • 한국연초학회지
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    • 제6권2호
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    • pp.179-184
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    • 1984
  • This experiment was carried out to select the suitable burley varieties for paddy field. Two varieties, two $F_1$ hybrids and three $F_1$ hybrids with pale yellow line which were all early maturing were tested in the paddy field condition. The results were as follows. 1. Va 528 and all $F_1$ hybrids flowered 4-8 days earlier than Burley 21. 2. Leaf maturity among varieties and $F_1$ hybrids were not significantly different at first priming, but significant differences were detected from second to forth primings. (MS Ky 12x JB 7802-30)Fl and (MS Br 21 x L8)$F_1$ hybrids matured 3-5 days earlier than Burley 21. Pale yellow hyorids matured early, yielded high and were favorable in physical properties, but were low in quality. 4. Va 528 and (MS Br 21 x L8) $F_1$ hybrid showed earthy maturing, high yield and good quality compared with Burley 21. So two varieties were considered suitable for paddy field cultivation.

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이면교배에 의한 황색종담배 (Nicotiana Tabacum L.)의 양적 형질에 대한 유전분석 - II. $F_1$$F_2$ 세대의 heterosis와 반수체의 특성 - (Diallel Analysis of Quantitative Characters of Flue-cured Tobacco Varieties (Nicotiana tabacum L. ) II. Heterosis of the $F_1$ and $F_2$ generation and the characters of haploids from $F_1$ hybrids and their parents)

  • 이승철
    • 한국연초학회지
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    • 제4권2호
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    • pp.23-30
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    • 1982
  • Six flue- cured cultivars of Nicotiana tabacum L., 15 possible $F_1$ hybrids and $F_2$ Populations among them, and 15 haploid Populations from Fl hybrids and haploids from Parents, were evaluated. Comparisons of the $F_1$, hybrids and $F_2$ Populations with the Parents indicated that heterosis values were small but significant for yield, plant height, days to flower, leaf length and width and total alkaloids from-6.0% to 5.4% in $F_1$ hybrids, and from -3.4% to 3.6% for Plant height days to flower leaves per plant in $F_2$ populations, respectively. There were positive correlations for yield, plant height, days to flower, leaves per plant and total alkaloids between diploid and haploid populations. Increase or decrease ratio of haploids to diploids of total alkaloids was appeared to 30.3%. Those for yield, leaf length and width, value arid reducing sugar were ranged from -4.1% to -27.6%.

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이면교배에 의한 황색종담배 (Nicotiana tabacum L.)의 양적 형질에 대한 유전 분석 (Diallel Analysis of Quantitative Characters of Flue-cured Tobacco Varieties (Nicotiana tabacum L.))

  • 이승철
    • 한국연초학회지
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    • 제4권1호
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    • pp.21-27
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    • 1982
  • Six flue-cured cultivars of Nicotiana tabacum L., 15 possible $F_1$ hybrids and 15 $F_2$ populations among them, and 15 haploid populations of $F_1$ hybrids and 6 haploid from parents, were evaluated. The variances of general combining ability were predominant for all characters studied in $F_1$ hybrid and $F_2$ population, and in haploid populations of $F_1$ hybrids except leaf width, value and reducing sugar. There were significant correlations between generations in variances and ranks of parental GCA effects estimated from general combining ability analysis of $F_1,\;F_2$ and haploid generation of $F_1$ hybrids for yield, stem height, days to flower. leaves per plant, value and total alkaloids.

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Fruit Yield and Quality Evaluation of Sweet Pepper (Capsicum annuum L.) F1 Hybrids Derived from Inbred Lines

  • Shrestha, Surendra Lal;Luitel, Binod Prasad;Lee, Taek Jong;Kang, Won Hee
    • 한국육종학회지
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    • 제42권4호
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    • pp.344-350
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    • 2010
  • Sweet pepper inbred lines (KNU1003, KNU1006, KNU1007, KNU1009, KNU1015, KNU1017 and KNU2006) developed at Kangwon National University (KNU) through conventional means, inbred lines (5AVS1, 5AVS2, 5AVS3, 5AVS5, 5AVS7 and 5AVS8) collected at Rural Development Administration (RDA) and inbred lines (SP12, SP27 and SP14) derived from anther culture were used as female parents and anther culture derived homozygous lines (SP9, SP10, SP14, SP24, SP25, SP27, SP30, SP32, SP34, SP38, SP43, SP45 and SP51) were used as male parents to produce $F_1$ hybrids. A total of 37 $F_1$ hybrids were evaluated for fruit yield and quality characters in summer season, 2007. Variation in fruit number, fruit weight, fruit yield per plant and fruit volume was observed among the $F_1$ hybrids. Superiority on yield over standard/commercial varieties were differed among $F_1$ hybrids. Hybrid $5AVS8{\times}SP45$ exhibited highest heterosis over Special (16.5%) and Fiesta (24.7%). Fruit quality characters (fruit length, fruit width, pericarp thickness, total soluble solid, fruit shape and fruit color) were varied among the $F_1$ hybrids. Fruit number, fruit weight and fruit volume per plant were correlated with fruit yield. Based on the standard heterosis expressed by the hybrids and quality characters evaluation, $KNU1017{\times}SP27$, $5AVS1{\times}SP43$, $5AVS5{\times}SP27$, $5AVS8{\times}SP45$, $SP12{\times}SP38$ and $SP27{\times}SP25$ hybrids were found to be superior over commercial cultivars and are selected. Inbred lines of these hybrid combinations can be used to produce $F_1$ hybrid seed for commercial production.

Enhanced Seed Development in the Progeny from the Interspecific Backcross (Fagopyrum esculentum ${\times}$ F. homotropicum) ${\times}$ F. esculentum

  • Shin, Dong-Hoon;Kamal, A H M;Yun, Young-Ho;Bae, Jeong-Sook;Lee, Yun-Sang;Lee, Moon-Soon;Chung, Keun-Yook;Woo, Sun-Hee
    • 한국자원식물학회지
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    • 제22권3호
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    • pp.209-214
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    • 2009
  • To facilitate the introgression of F. esculentum into the traits of F. homotropicum, several accessions of the hybrids between these two species were pollinated with F. esculentum as the recurrent parent. The embryo in vitro rescue was performed to increase the recovery of backcross progenies. The $F_{2}$ generation was more amenable than $F_{1}$ hybrids to produce backcross progenies. The $F_{1}$ hybrids were backcrossed twice with common buckwheat (pin-type F. esculentum) (recurrent backcrossing). Also, alternate backcrosses with common buckwheat and F. homotropicum (congruity backcrossing) were carried out. Pollen tube growth of BC$F_{1}$ ${\times}$ F. esculentum (thrum) and F. homotropicum ${\times}$ BC$F_{1}$ was the disturbed penetration exceeded for all initial interspecific hybrids, and its requirement was proportionally lower when the common buckwheat was used as the recurrent parent and as the last parent of congruity hybrids. Effects of both common buckwheat and F. homotropicum on seed success rate for hybridization were observed. Growth of hybrid embryos before rescue, regeneration of mature hybrids all increased recurrent and congruity backcrosses and inter-crosses between $F_{1}$ plants and selected fertile plants of the second congruity backcrosses.

Studies on Manifestation of Hybrid Vigour in $F_1$ and Three-Way Crosses of Multivoltine $\times$ Bivoltine Silkworm, Bombyx mori L.

  • Rao, D.Raghavendra;Banerjee, Sharmista;Kariappa, B.K.;Singh, Ravindra;Premalatha, V.;Dandin, S.B.
    • International Journal of Industrial Entomology and Biomaterials
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    • 제7권2호
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    • pp.209-219
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    • 2003
  • An experiment was initiated to evaluate hybrid vigour in twelve F$_1$ hybrids and seven three-way crosses of multivoltine ${\times}$ bivoltine silkworm between newly evolved multivoltine breed BL67 with productive bivoltine CSR breeds and hybrids. Analysis of variances computed for different characters among F$_1$hybrids and three-way crosses showed highly significant differences among them indicating presence of both additive and non-additive gene actions for the expression of these characters. Among twelve F$_1$ hybrids, two F$_1$ hybrids viz., BL67${\times}$CSR$_4$and BL67${\times}$CSR$_{5}$ have expressed significant heterosis for nine characters and two hybrids viz., BL67${\times}$NB$_4$D$_2$and PM${\times}$NB$_4$D$_2$ for eight characters whereas out of nine three-way crosses, three hybrids viz., BL67${\times}$ (CSR$_3$${\times}$CSR$_{6}$), BL67${\times}$(CSR$_{16}$${\times}$CRS$_{17}$) and BL67${\times}$(CSR$_{18}$ ${\times}$CSR$_{19}$) expressed significant heterosis for eight characters. In the present study, it is observed that the cocoons of two hybrids viz., BL67${\times}$CSR$_4$and BL67${\times}$CSR$_{19}$ were found to be uniform as these hybrids showed lowest CV% (5.35 and 5.38) among twelve F$_1$ hybrids and seven three way crosses between multivoltine ${\times}$ bivoltine hybrids. Four F$_1$ hybrids viz., BL67${\times}$CSR$_4$, BL67${\times}$CSR$_{5}$, BL67${\times}$ (CSR$_3$${\times}$CSR$_{6}$), BL67${\times}$(CSR$_{16}$${\times}$CRS$_{17}$) and BL67${\times}$(CSR$_{18}$ ${\times}$CSR$_{19}$) showed superiority in expressing hybrid vigour and are considered as best heterotic hybrids for commercial exploitation.ion.ation.ion.ation.ion.

Studies on Parthenogenetic Development, Hybrid Vigour and Cocoon Shape Variability in Bivoltine F1 Hybrids of the Silkworm, Bombyx mori L.

  • Singh, Ravindra;Rao, D.Raghavendra;Kariappa, B.K.;Sanyal, Prabhati;Premalatha, V.
    • International Journal of Industrial Entomology and Biomaterials
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    • 제5권1호
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    • pp.59-65
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    • 2002
  • Parthenogenetic development, hybrid vigour and cocoon shape variability were studied in bivoltine F1 hybrids of the silkworm, Bombyx mori L. Considerable breed differences were observed in parthenogenetic ability. Among the parental breeds, CSR18 exhibited maximum parthenogenetic development (79.65%) followed by CSR4 (67.90%). Among bivoltine F1 hybrids, CSR18 ${\times}$ CSR4 showed highest parthenogenetic development (73.32%) followed by CSR2 ${\times}$ CSR4 (55.43%). Study on hybrid vigour demonstrated that CSR18 ${\times}$ CSR19 expressed maximum significant hybrid vigour for all the seven economic characters over Mid Parent Value (MPV) followed by CSR2 ${\times}$ CSR4 and CSR18 ${\times}$ CSR4 exhibiting significant heterosis for six characters. Cocoon shape measurement study revealed that among ten bivoltine F1 hybrids, cocoons of three hybrids were found comparatively uniform. Importance of this study to know the level of paythenogenetic development, hybrid vigour and cocoon shape variability in different bivoltine F1 hybrids have been discussed.