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Pollen storage effect on seed germination ability at low temperature in maize (Zea mays L.)

J. Bocsi, G. Kovács and B. Barnabás
Cereal Research Communications
Vol. 18, No. 4 (1990), pp. 347-354
Published by: Akadémiai Kiadó
Stable URL: http://www.jstor.org/stable/23783648
Page Count: 8
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Pollen storage effect on seed germination ability at low temperature in maize (Zea mays L.)
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Abstract

Pollen from a single cross hybrid (A 632 x HMv 301) was kept in a desiccator under low humidity (RH 20%) for 48 and 72 hours at 1 °C. After this cold storage, pollen samples were used for artificial pollinations. Seeds set by the cold stored pollens were separated by their position on the cob (lower, middle and upper part). Dissociated seeds had been germinated at constant 8 °C temperature in a germinator for 32 days. Germination of seeds set by pollen cold stored for 72 hours began earlier and percentage of germination was significantly higher than that of the control. Moreover, there were considerable differences in the ability and speed of germination of the seeds situated in different parts of the cob. The best was the lower part of the cob. The results indicate that pollen storage at 1 °C causes selection pressure and applied to pollen may alter the physiological performance of the following generation.

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