MADE PHARMAWATI
Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana, Kampus Bukit Jimbaran, Bali, Indonesia

Published : 28 Documents
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Journal : HAYATI Journal of Biosciences

Chloroplast DNA Copy Number May Link to Sex Determination in Leucadendron (Proteaceae) PHARMAWATI, MADE; YAN, GUIJUN; FINNEGAN, PATRICK
HAYATI Journal of Biosciences Vol 16, No 1 (2009): March 2009
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.16.1.21

Abstract

Leucadendron (Proteaceae) is a South African genus, the flowers of which have become a popular item in the Australian cut-flower industry. All species are dioecious. In general the female flowers are the more desirable as cut flowers. The availability of a molecular marker linked to sex determination is therefore needed both to maximize the efficiency of breeding programs and to supply markets with flowers from the preferred sex. The polymerase chain reaction-based method of suppression subtractive hybridization (SSH) combined with mirror orientation selection (MOS) were applied in an attempt to identify genome differences between male and female plants of Leucadendron discolor. Screening of 416 clones from a male-subtracted genomic DNA library and 282 clones from a female-subtracted library identified 13 candidates for male-specific genomic fragments. Sequence analyses of the 13 candidate DNA fragments showed that they were fragments of the chloroplast DNA, raising the possibility that chloroplast DNA copy number is linked to sex determination in Leucadendron. Key words: Leucadendron, sex determination, suppression subtractive hybridization (SSH)
The Genetic Relationships of Grevillea Hybrids Determined by RAPD Marker PHARMAWATI, MADE; MACFARLANE, IAN JAMES
HAYATI Journal of Biosciences Vol 20, No 4 (2013): December 2013
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.20.4.196-200

Abstract

Grevillea (Proteaceae) is native to Australia and is known as garden plant. The flowers have high diversity colors, which range over orange, yellow, pink, red and green. It is a large genus, consisted of 357 species. This genus is economically important and there are hundreds of Grevillea hybrids with beautiful color and shape of flower.  Information of the genetic relationships of Grevillea hybrids is not available. Ten Grevillea hybrids were used in this study to evaluate the genetic relationships between hybrids and with their parents. PCR-RAPD technique was employed in this study with seven RAPD primers. The dendrogram of Grevillea hybrids was performed using Neighbor-Joining analysis based on genetic distance. The analysis revealed that ‘Moonlight’, ‘Caloundra Gem’, and Little Pink Willie’ were clustered with Grevillea banksii. The three hybrids were hybrid of G. banksii and other Grevillea species.  ‘Superb’ was closely related to ‘Robyn Gordon’ as they are hybrid of G. banksii and G. bipinnatifida.
The Genetic Relationships of Grevillea Hybrids Determined by RAPD Marker PHARMAWATI, MADE; MACFARLANE, IAN JAMES
HAYATI Journal of Biosciences Vol 20, No 4 (2013): December 2013
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.20.4.196-200

Abstract

Grevillea (Proteaceae) is native to Australia and is known as garden plant. The flowers have high diversity colors, which range over orange, yellow, pink, red and green. It is a large genus, consisted of 357 species. This genus is economically important and there are hundreds of Grevillea hybrids with beautiful color and shape of flower.  Information of the genetic relationships of Grevillea hybrids is not available. Ten Grevillea hybrids were used in this study to evaluate the genetic relationships between hybrids and with their parents. PCR-RAPD technique was employed in this study with seven RAPD primers. The dendrogram of Grevillea hybrids was performed using Neighbor-Joining analysis based on genetic distance. The analysis revealed that ?Moonlight?, ?Caloundra Gem?, and Little Pink Willie? were clustered with Grevillea banksii. The three hybrids were hybrid of G. banksii and other Grevillea species.  ?Superb? was closely related to ?Robyn Gordon? as they are hybrid of G. banksii and G. bipinnatifida.
Chloroplast DNA Copy Number May Link to Sex Determination in Leucadendron (Proteaceae) PHARMAWATI, MADE; YAN, GUIJUN; FINNEGAN, PATRICK
HAYATI Journal of Biosciences Vol 16, No 1 (2009): March 2009
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.16.1.21

Abstract

Leucadendron (Proteaceae) is a South African genus, the flowers of which have become a popular item in the Australian cut-flower industry. All species are dioecious. In general the female flowers are the more desirable as cut flowers. The availability of a molecular marker linked to sex determination is therefore needed both to maximize the efficiency of breeding programs and to supply markets with flowers from the preferred sex. The polymerase chain reaction-based method of suppression subtractive hybridization (SSH) combined with mirror orientation selection (MOS) were applied in an attempt to identify genome differences between male and female plants of Leucadendron discolor. Screening of 416 clones from a male-subtracted genomic DNA library and 282 clones from a female-subtracted library identified 13 candidates for male-specific genomic fragments. Sequence analyses of the 13 candidate DNA fragments showed that they were fragments of the chloroplast DNA, raising the possibility that chloroplast DNA copy number is linked to sex determination in Leucadendron. Key words: Leucadendron, sex determination, suppression subtractive hybridization (SSH)