Development and utilization of hybrid rice in Malaysia
Country
Malaysia
Description
[Synopsis]
The instability of CMS in rice can only be attributed to a mixture of volunteer or contaminated plants mistakenly classified as revertants. We can use CMS lines for practical hybrid rice breeding without encountering instability problems. IRRI hybrids IR69690H and IR69694H always showed heterosis levels as high as 120 on the average, which were associated with 20 % higher yield over MR 84. IR69692H and IR67693H also occasionally showed a high heterosis level. In addition, these four hybrids headed about two to three weeks earlier compared with MR 84. In Malaysia, direct seeding is very popular. Based on the results of direct seeding yield trials of hybrids, it is not recommended to cultivate hybrid rice by reducing the seeding rate of hybrids in direct seeding. For the practical utilization of hybrids, the use of machine transplanters for reducing the amount of hybrid rice seed per unit area is recommended.
- Affiliation
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Japan International Research Center for Agricultural Sciences Biological Resources Division
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Malaysian Agricultural Research and Development Institute
- Classification
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Technical B
- Term of research
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FY1995-1997
- Responsible researcher
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KATO Hiroshi ( Biological Resources Division )
- ほか
- Japanese PDF
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1997_19_A3_ja.pdf1.28 MB