• Title/Summary/Keyword: Cytoplasmic male sterile

Search Result 37, Processing Time 0.018 seconds

Characteristics and the Utilization of Cytoplasmic Male Sterility in Burley Tobacco ( Nicotiana tabacum L. CV Burley ) (Burley (Nicotiana tabacum L. CV Burley)종의 세포질적 웅성불임계통의 특성과 이용)

  • 이승철;정윤화;이상하
    • Journal of the Korean Society of Tobacco Science
    • /
    • v.1 no.1
    • /
    • pp.46-50
    • /
    • 1979
  • Four cytoplasmic male-sterile lines of burley tobacco (Nicotiana tabacum L. ) and their male- fertile counterparts were evaluated for their characteristics in replicated field trials. Cytoplasmic male -sterile lines were comparable to the male- fertile varieties for agronomic and chemical traits and these suggest that the cytoplasmic male - sterility can be used in the production of hybrid seed without loss of vigour or undesirable changes On other characteristics.

  • PDF

Testing Bacterial Spot Resistant Lines of Capsicum Pepper for Nuclear Genotype Interacting with Male Sterile Cytoplasm (고추 더뎅이병 저항성 계통의 세포질웅성불임 관련 핵내유전자형 검정)

  • 김병수;황희숙
    • Korean Journal Plant Pathology
    • /
    • v.14 no.3
    • /
    • pp.212-216
    • /
    • 1998
  • Capsicum pepper selections fro PI163192, PI241670, PI244670, PI271322, PI308787, PI322719, and PI369994 were confirmed to be non-hypersensitively resistant to race 3 of Xanthomonas campestris pv. vesicatoria. A resistant cultivar,‘SR’, was shown to be hypersensitive. Four Koran local cultivars, a cytoplasmic male sterile line (A-line) and its maintainer (B-line) were highly susceptible. The resistant selections and cultivars were crossed with a male sterile A-line (Smsms) and fertility of their F1 hybrids was examined by observing he pollen production, testing pollen germination, and quantifying the amount of pollen produced per anther to identify the genotype interacting with the male sterile cytoplasm. The seven resistant PI selections turned out to be restorers (N(S)MsMs) and‘SR’to be a maintainer (Nmsms).

  • PDF

Sources of Resistance to Bacterial Wilt Found in Vietnam Collections of Pepper (Capsicum annuum) and Their Nuclear Fertility Restorer Genotypes for Cytoplasmic Male Sterility

  • Tran, Ngoc Hung;Kim, Byung-Soo
    • The Plant Pathology Journal
    • /
    • v.28 no.4
    • /
    • pp.418-422
    • /
    • 2012
  • Eleven hot pepper accessions collected in Vietnam showed stable resistance to bacterial wilt as well-known resistance sources, MC4 and MC5, in repeated inoculation tests with different Ralstonia solanacearum isolates conducted from 2004 to 2010. Seven of these accessions (specifically KC981, KC1006, KC1021, KC1027, KC1045, KC1050, and KC1055) resulted in stable male sterile F1 plants in the crosses with a cytoplasmically male sterile (CMS) Chilseong (CMS-A, Srfrf ), and therefore, they were maintainers (CMS-B) with a genotype of Nrfrf. The rest (KC980, KC995, KC999, and KC1009) produced stable male fertile F1 plants in the crosses, and therefore, were restorers (CMS-C) with a genotype of N(S)RfRf. Therefore, the maintainer and restorer sources of resistance may be used in preference in breeding maternal (CMS and their maintainers) and paternal parents (restorers) for resistance to bacterial wilt, respectively, in the hybrid breeding system utilizing cytoplasmic male sterility.

Characters of male-sterile Hyangchio derived from N. megalosiphon. (N. megalosiphon에서 유래된 세포질적 웅성불임 향초의 특성)

  • Lee, S.C.;Kum, W.S.;Jin, J.E.;Joh, M.J.;Jeong, Y.H.;Lee, J.D.
    • Journal of the Korean Society of Tobacco Science
    • /
    • v.4 no.1
    • /
    • pp.79-81
    • /
    • 1982
  • Cytoplasmic male- sterile Hyangchio, derived from male- sterile Burley 21 containing N. megalosiphon cycloplasm, and male- fertile Hyangchio (Korean local aromatic variety) were evaluated in replicated pot trials in green-house. Male- sterile Hyangchio was comparable to the male- fertile Hyangchio for six agronomic traits and total alkaloids content. The only significant difference was that the male- sterile Hyangchio flowered 2.3 days later than the male- fertile Hyangchio. M ale- sterile Hyangchio has increased the yield than the male- fertile Hyangchio significantly in case of non- topped.

  • PDF

Determination of Cytoplasmic Male Sterile Factors in Onion Plants (Allium cepa L.) Using PCR-RFLP and SNP Markers

  • Cho, Kwang-Soo;Yang, Tae-Jin;Hong, Su-Young;Kwon, Young-Seok;Woo, Jong-Gyu;Park, Hyo-Guen
    • Molecules and Cells
    • /
    • v.21 no.3
    • /
    • pp.411-417
    • /
    • 2006
  • We have developed a polymerase chain reactionrestriction fragment length polymorphism (PCR-RFLP) marker that can distinguish male-fertile (N) and male-sterile (S) cytoplasm in onions. The PCR-RFLP marker was located in a chloroplast psbA gene amplicon. Digesting the amplicons from different cytoplasm-containing varieties with the restriction enzyme MspI revealed that N-cytoplasm plants have a functional MspI site (CCGG), whereas the S-cytoplasm plants has a substitution in that site (CTGG), and thus no MspI target. The results obtained using this PCR-RFLP marker to distinguish between cytoplasmic male sterile factors in 35 onion varieties corresponded with those using a CMS-specific sequence-characterized amplified region (SCAR) marker. Moreover, the PCR-RFLP marker can identify N- ot S-cytoplasms in DNA sample mixtures in which they are in up to a 10-fold minority, indicating that use of the marker has high diagnostic precision. We also demonstrated the usefulness of the SNP detected in the psbA gene for high-throughput discrimination of CMS factors using Real-time PCR and a TaqMan probe assay.

Characteristics of Haploid Plants Derived from Interspecific Cross between Cytoplasmic Male-sterile Tobacco $F_1$(Nicotiana tabacum) and Nicotiana africana (연초(Nicotiana tabacum L.) 새포질 웅성불임 $F_1$과 Nicotiana africana의 종간 교배에 의한 반수체 식물의 특성)

  • 정윤화;금완수;조명조
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.40 no.5
    • /
    • pp.649-654
    • /
    • 1995
  • This study was conducted to investigate the utility and agronomic characteristics and use of cytoplasmic. male-sterile (CMS) haploid plants derived from interspecific cross between (male-sterile NC82$\times$burley21) F$_1$ plant (Nicotiana tabacum L.) and Nicotiana africana. Abundant seeds of high germinability were obtained when Nicotiana tabacum (cytoplasmic male-sterile F$_1$ plants) is pollinated by Nicotiana africana. Most of seedlings died at the cotyledonary stage. The remaining seedlings are viable F$_1$ hybrids or maternal haploids that can be easily distinguished. Number of interspecific Fl hybrids and matermal haploids per capsule obtained from the interspecific cross between cytoplasmic male-sterile tobacco F$_1$ plants and N.africana yielded 2.2 and 0.5 plants, respectively. Out of 149 CMS haploid plants obtained from interspecific cross, 102 plants showed green type while the others were yellow type for leaf and stem. This results agreed with the genetic ratios expected among haploid plants from the F$_1$ hybrids heterozygous for two recessive genes of yellow color of burley tobacco plant. Out of 83 CMS haploid plants inoculated with TMV, 48 plants showed resistant, while the others was susceptible. It agreed with the expected genetic ratios for a single dominant gene of TMV resistance. CMS haploid plant will be useful as a source material for breeding of CMS doubled haploid lines

  • PDF

Restorer Genotype for Male Sterile Cytoplasm of Genetic Resources Moderately Resistant to Phytophthora capsici in Capsicum Pepper

  • Kim, Byung-Soo;Ahn, Joon-Hyung;Lee, Jae-Moo;Park, Dong-Guen;Kim, Hye-Yeon
    • Horticultural Science & Technology
    • /
    • v.30 no.1
    • /
    • pp.73-78
    • /
    • 2012
  • KC00256, KC00406, KC00462, KC00463, KC00820, and KC00821, the genetic resources that have previously been reported as moderately resistant to Phytophthora capsici, as well as the line KC01322, a new source of moderate resistance introduced from Laos, were tested against two strains (Pc003 and Pc005) of P. capsici. We also determined the nuclear restorer genotypes of these lines, in regards to their interaction with cytoplasmic male sterility, through crossing the resources with cytoplasmic male sterile Punggok-A (Srfrf) and determining the fertility of the $F_1$ hybrids. The studied lines exhibited a low level of resistance to both the strains of P. capsici compared to highly resistant CM334, but their response was fairly consistent for both P. capsici strains. KC00406, KC00462, KC00463, and KC01322 produced stable, male fertile $F_1$ plants indicating that they are restorers with genotype N(S)RfRf. KC00821 produced male sterile $F_1$ plants and was identified as a maintainer with genotype Nrfrf. The $F_1$ plants of the KC00820 cross, however, set a few male fertile flowers in the greenhouse at seedling stage, then became male sterile after being transplanted to the plastic greenhouse soil in May and remained so to the end of the growing season. Therefore, KC00820 is an unstable maintainer with genotype Nrfrf. The moderate resistance exhibited by these genetic resources may be integrated into breeding programs aimed at promoting higher levels resistance via recurrent selection or hybridization.

Breeding Cytoplasmic Male Sterile Lines Resistant to Phytophthora capsici and Ralstonia solanacearum in Capsicum Pepper (역병-풋마름병 복합저항성 세포질웅성불임계 고추 육성)

  • Lee, Jae-Moo;Kim, Byung-Soo
    • Current Research on Agriculture and Life Sciences
    • /
    • v.28
    • /
    • pp.39-46
    • /
    • 2010
  • Selection procedures for breeding lines resistant to both bacterial wilt caused by Ralstonia solanacearum and Phytophthora blight caused by P. capsici were executed to generations from $F_2$ and $BC_1F_1$ to $F_4$ and $BC_1F_3$ of crosses between a Phytophthora resistant breed, 'Chilbok No. 1' and bacterial wilt resistant accessions introduced from Vietnam during 2009 and 2010. The breeding populations or lines were tested for resistance to P. capsici and resistant plants were selected. The resistant selections were inoculated with R. solanacearum to discard susceptible plants. Resistance to P. capsici was conspicuously improved by selection from $F_2$ and $BC_1F_1$ and the final selections showed a similar level of resistance to P. capsici as a commercial Phytophthora resistant cultivar, Muhanjilju. A few $BC_1F_2$ selections were crossed to a cytoplasmic male sterile line, Chilbok-A, to identify their nuclear genotype interacting with male sterile cytoplasm. Majority of them was fixed to maintainer (Nrfrf) and only two resulted segregating into male sterile and male fertile plants indicating that the pollen parents were heterozygous in the fertility-restoring gene.

  • PDF

Development of New Molecular Markers for the Identification of Male Sterile Cytoplasm in Peppers (Capsicum annuum L.)

  • Min, Woong-Ki;Kim, Byung-Dong;Kim, Sung-Gil;Lee, Sang-Hyeob
    • Horticultural Science & Technology
    • /
    • v.29 no.1
    • /
    • pp.53-60
    • /
    • 2011
  • Cytoplasmic male sterility (CMS) induced by mutant mitochondria genome, has been used for commercial seed production of $F_1$ hybrid cultivars in diverse crops. In pepper (Capsicum annuum L.), two sterile cytoplasm specific gene organization, atp6-2 and coxII were identified. An open reading frame, orf456 nearby coxII gene has been speculated to induce male sterility (MS) by mutagenic analysis. Moreover, molecular markers for atp6-2 and coxII of mitochondrial genotype (mitotype) were developed. However, the Cytoplasmic MS specific markers, atp6SCAR and coxIISCAR markers appeared in both N and S cytoplasms when polymerase chain reaction (PCR) cycles prolonged more than 40 cycles. Since the reported molecular markers were dominant markers, the presence of the faint sterile-specific band in normal cytoplasm may lead to the mis-classification of pepper breeding lines. To solve this problem, one common forward primer and two different reverse primers specific to normal coxII and sterile orf456 genes were designed after analyzing their gene organizations. By using these three primers, N and S coxII specific bands were co-amplified in male-sterile lines, but only normal coxII specific band was amplified in maintainer lines. Since the reverse primer for sterile coxII was specifically designed 275 bp downstream of orf456, relatively stable PCR amplification patterns were observed regardless of the number of PCR cycles. These primer sets easily identified different mitotypes among the divergent breeding lines, commercial cultivars and diverse germplasms.

Comparison in Anthesis Characterics of Some Male Sterile Rice Cultivars (수도 웅성불임계통의 개화특성 비교)

  • Suh, Hak-Soo;Cho, Young-Chan;Park, Tae-Seok
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.30 no.4
    • /
    • pp.427-430
    • /
    • 1985
  • Extrusion degree of stigma, numbers of opened florets at different time during anthesis, angle of opening florets and outcrossed seed set percent were investigated in four male sterile rices having background of Korean cultivars; Suwon 296A, Suwon 304A, Suwon 310A and Suwon 296GMS, and the Chinese cytoplasmic genetic male sterile rice Zhenshan 97A as control in order to get basic informations for hybrid rice breeding. The results obtained were summarized as follows; Extrusion degree of stigma in the four Korean male sterile lines tested was lower than in the Chinese one Zhenshan 97A. The better extrusion of stigma showed the higher outcross rate in male sterile rices. There were almost no relationships between peak of anthesis and outcrossed seed set in the male sterile rices tested. Large anthesis angle with long anthesis duration appeared to be essential for high outcrossed seed set of the male sterile rices. The genetic male sterile line showed the larger anthesis angle than the cytoplasmic and genetic male sterile one in the lines having the same background to the Korean rice cultivar Suwon 296.

  • PDF