e-ISSN 2231-8542
ISSN 1511-3701

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Influence of Position of Panicle on Seed and Seedling Characteristics of Rice (Oryza sativa L)

U.K Sangakkara

Pertanika Journal of Tropical Agricultural Science, Volume 16, Issue 1, April 1993

Keywords: Branches, panicles germination patterns, seed and seedling characteristics, Oryza sativa L

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The characteristics of seeds obtained from primary, secondary and tertiary branches of panicles in four varieties of Indica rice (Oryza sativa) were evaluated. The germination patterns and viability of procured seed and the vigour and characteristics of seedlings developed from these seeds were also studied. The characteristics of seeds of the three branch types of the four varieties and their seedlings were similar. In contrast, marked differences were observed between the seeds obtained from the three types of branches. Seeds of primary branches of the panicle had a greater 100-seed weight The lowest weight was observed in seeds from tertiary branches. This difference was principally due to the heavier endosperm of the seeds of primary branches, which in turn increased the endosperm: embryo ratios. The viability and germinability of the three categories of seed were similar to those of seed characteristics. Seed from primary branches of the panicle had a higher viability. The vigour of seedlings from these seeds was also greater. Differences in growth of seedlings from the these seeds was also greater. Differences in growth of seedlings from the three branches of the rice panicle were similar in terms of characteristics and viability of seeds. The study revealed that seedlings from seeds of primary branches manifested superior growth because of better seed characteristics. Some practical implications of the study are discussed.

ISSN 1511-3701

e-ISSN 2231-8542

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