Natural outcrossing of cytoplasmic male sterile V20A [Indonesia]

To synchronize flowering, V20A was seeded 3 d earlier and 3 d later than V20B and transplanted at the same time in an isolated plot at 1 seedling/hill. The maintainer line and pollen source was planted in a 3-x3-m plot at 20-x20-cm spacing. The cytosterile line was planted at 30-x20-cm spacing in 5...

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Bibliographic Details
Published inInternational rice research newsletter Vol. 10; no. 6
Main Author Silitonga, T.S. (Bogor Research Inst. for Food Crops, Merdeka 99, Bogor, West Java (Indonesia). Plant Breeding Div.)
Format Journal Article
LanguageEnglish
Published 01.12.1985
Subjects
ALOGAMIA
ESTERILIDAD MASCULINA
INDONESIA
INDONESIE
ORYZA SATIVA
OUTBREEDING
STERILITE MALE
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Summary:To synchronize flowering, V20A was seeded 3 d earlier and 3 d later than V20B and transplanted at the same time in an isolated plot at 1 seedling/hill. The maintainer line and pollen source was planted in a 3-x3-m plot at 20-x20-cm spacing. The cytosterile line was planted at 30-x20-cm spacing in 5 rows on each side of the pollen-source plot. The 1st row of 10 plants was 30 cm from the pollen source; the 2d, 50; the 3d, 70; the 4th, 90; and the 5th,110. One primary panicle of each male sterile plant was bagged before flowering. The others remained uncovered for natural outcrossing. The flag leaf was clipped for supplementary pollination. At maturity, V20A plants were harvested individually and seed set was counted to determine the extent of outcrossing. The bagged panicles did not set any seed, but seed set on uncovered panicles varied with the direction of planting and distance to the pollen source. Low seed set probably was caused by poor V20A panicle exsertion
Bibliography:F30
8611430
ISSN:0115-0944