Formation of panicles and hermaphroditic florets in wild-rice

Formation of panicles and flower primordia in wild-rice, Zizania palustris L., was investigated by scanning electron microscopy (SEM). Floral development involved the formation of both staminate and pistillate floral primordia in the wild-rice spikelet. The SEM study indicated that wild-rice shared...

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Bibliographic Details
Published in:International journal of plant sciences 1998-07, Vol.159 (4), p.550-558
Main Authors: Liu, Q. (University of Minnesota, Duluth.), Oelke, E.A, Porter, R.A, Reuter, R
Format: Article
Language:English
Subjects:
ANDROECIUM
Anthers
Bisexuality
Botany
Development
Florets
FLOWER PRIMORDIA
FLOWERING
FLOWERS
GEOGRAPHICAL VARIATION
GYNOECIUM
Hair
INFLORESCENCES
MINNESOTA
Panicles
PHENOTYPES
PLANT ANATOMY
Plant reproduction
Plants
POPULATIONS
Rice
SEX
Sex determination
SPIKELETS
STAMENS
Transition zones
ZIZANIA
ZIZANIA PALUSTRIS
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Summary:Formation of panicles and flower primordia in wild-rice, Zizania palustris L., was investigated by scanning electron microscopy (SEM). Floral development involved the formation of both staminate and pistillate floral primordia in the wild-rice spikelet. The SEM study indicated that wild-rice shared a similar developmental process in panicle formation with that of cultivated white rice (Oryza sativa L.). Variations of hermaphroditic floret formation and sex expression were observed in the transition zone between the male and female portions of the panicles in several different wild-rice populations. The frequencies of plants with hermaphroditic floret formation ranged from 27% in the Pistillate population (Z. palustris L.) to 70% in the Peterson Pond (Zizania aquatica L.) population. There was a high degree of phenotypic variation in sex expression in the transition zone of panicles from different wild-rice populations.
ISSN:1058-5893
1537-5315
DOI:10.1086/297572