Low Temperature Induced Male Sterility in Male-Fertile Pennisetum clandestinum

Controlled environment studies of Pennisetum clandestinum showed that at 10°C stamens of the male-fertile strain were not exserted from the floret although stigmas emerged normally. At higher temperatures both stamens and stigmas were exserted. Pollen abortion was high at 10°C and was increased by l...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1961-02, Vol.133 (3452), p.577-578
Main Author: Youngner, Victor B.
Format: Article
Language:English
Subjects:
Anthers
Florets
Flower stigma
Flowering
Low temperature
Photoperiod
Plants
Pollen
Stamens
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Summary:Controlled environment studies of Pennisetum clandestinum showed that at 10°C stamens of the male-fertile strain were not exserted from the floret although stigmas emerged normally. At higher temperatures both stamens and stigmas were exserted. Pollen abortion was high at 10°C and was increased by lengthening photoperiod. Flowering of the malesterile strain was not changed by any temperature or photoperiod. These responses to temperature may explain the natural sterility during the cool season.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.133.3452.577