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Journal : Indonesian Journal of Agricultural Science

CORRELATION ANALYSIS OF AGRONOMIC CHARACTERS AND GRAIN YIELD OF RICE FOR TIDAL SWAMP AREAS Hairmansis, Aris; Kustianto, Bambang; Suwarno, Suwarno
Indonesian Journal of Agricultural Science Vol 11, No 1 (2010): April 2010
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

Development of rice varieties for tidal swamp areas is emphasized on the improvement of rice yield potential in specific environment. However, grain yield is a complex trait and highly dependent on the other agronomic characters; while information related to the relationship between agronomic characters and grain yield in the breeding program particularly for tidal swamp areas is very limited. The objective of this study was to investigate relationship between agronomic characters and grain yield of rice as a basis for selection of high yielding rice varieties for tidal swamp areas. Agronomic characters and grain yield of nine advanced rice breeding lines and two rice varieties were evaluated in a series of experiments in tidal swamp areas, Karang Agung Ulu Village, Banyuasin, South Sumatra, for four cropping seasons in dry season (DS) 2005, wet season (WS) 2005/2006, DS 2006, and DS 2007. Result from path analysis revealed that the following characters had positive direct effect on grain yield, i.e. number of productive tillers per hill (p = 0.356), number of filled grains per panicle (p = 0.544), and spikelet fertility (p = 0.215). Plant height had negative direct effect (p = -0.332) on grain yield, while maturity, number of spikelets per panicle, and 1000-grain weight showed negligible effect on rice grain yield. Present study suggests that indirect selection of high yielding tidal swamp rice can be done by selecting breeding lines which have many product tive tillers, dense filled grains, and high spikelet fertility.
IDENTIFICATION OF WIDE COMPATIBILITY VARIETIES IN SOME TROPICAL JAPONICA RICE Hairmansis, A.; Aswidinnoor, Hajrial; Trikoesoemaningtyas, Trikoesoemaningtyas; Suwarno, Suwarno
Indonesian Journal of Agricultural Science Vol 6, No 1 (2005): April 2005
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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The F1 hybrid sterility in indica/japonica crosses is the major barrier in developing hybrid rice varieties between these two diverse germplasm. The sterility problem in japonica/indica hybrids can be overcome by using wide compatibility genes. The objective of this study was to identify wide compatibility varieties (WCVs) in some tropical japonica rice. Twenty five tropical japonica varieties as male parents were crossed with indica (IR64)and japonica (Akitakomachi) testers as female parents. The crosses were planted following a randomized complete block design with three replications. Varieties having average spikelet fertility of more than 70% with both the indica and japonica testers were rated as WCVs. Result from this study showed that six tropical japonica varieties were classified as WCVs, i.e., Cabacu, Grogol, Kencana Bali, Klemas, Lampung Lawer, and Napa. Hybrid sterility is caused by partial sterility of male and female gametes. The WCVs from the present study can be used in hybrid rice breeding program to solve hybrid sterility in indica/japonica hybrids.
Co-Authors A. Hairmansis A.A. Ketut Agung Cahyawan W Abdul Syani Agus Budiman Agusta Dian Ellina Ahmad Dadang Alanindra Saputra Alfian Fawzi Ali, Ramsah Ambarwati, AD Aprianto, Ronal Aris Hairmansis Auliyah, Khusnul Bambang Kustianto Bramantyo, Rizki Yudha Budi Koestoro Caribu Hadi Prayitno CH Prayitno, CH Dewi Puspita Dewi Puspita Sari Djarot Sadharto, Djarot Doso Sarwanto Dudung Dudung DWINITA WIKAN UTAMI E Hendarto, E Eko Hendarto Eni Wuryani Fardana, Anugerah Riski Furqaranda, Rastra Ganjar Subekti HAJRIAL ASWIDINNOOR Hanarida, I Hartono, Meilani Herpratiwi Herpratiw Hidayatun, Dinar Hindayati Mustafidah Ida Kurniawati, Ida Junun Sartohadi Kamaliah Kamaliah, Kamaliah Kusmiyati Kusmiyati kustono, alwan Maman A. Djauhari Maridi Maridi Marjono Marjono Miftahudin . Muhammad Amin Murfiah Dewi Wulandari Murti, Hary N, Dwi Ayu Nasution, Anggiani Ngapuli Irmea Sinisuka, Ngapuli Irmea Nugraheni Eko Wardani Nur Hidayat Nurrohmad, Edi Otto Fajarianto Pairulsyah Pairulsyah Parouli M. Pakpahan Permatasari, Pradina Andhin PUJI LESTARI Raya, Crisantus Lebu Riky Priangga Risna Esti Mugiawati Rohmat Fadludin Romadhon Romadhon Rosdianti, I Saddhono, Kundharu - Sajidan Sajidan Santoso, Andri Guna Saring Marsudi Setyowati, Ayu Siregar, Muhammad Imam Syarif Siti Masruroh Siti Nurani Siti Yuriyah SK Baidoo, SK Soedjajadi Keman Solihah, Ma'ratul Sri Dwiastuti Suberthi, Meta Sudiarto, Pramono Sunarto Sunarto Suranto Suranto Suryawati, Indah Susbiyani, Arik Susetyo Susetyo Sutomo Sutomo Syaiful . syarifah muthia putri, syarifah muthia T Rahardjo, T Teguh Pramono Tigor Sitorus, Tigor TR Sutardi, TR TRI PRABOWO Trikoesoemaningtyas Uswatun Chasanah Wahyuni, Niniek Waluyo Waluyo Wera Auliag Sistira Winda Hastuti, Winda YATIM RIYANTO Yulianto, Budi Yulinartati Yulinartati, Yulinartati Yuriyah, S Yusuf, Rizky Maulana Zulbahridar Zulbahridar, Zulbahridar