Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525674
Title Influences of temperature on Arachis hypogaea L. : with special reference to its pollen viability
Author(s) Beer, J.F. de
Source University. Promotor(en): J.D. Ferwerda. - Wageningen : Pudoc - ISBN 9789022000861 - 81
Publication type Dissertation, internally prepared
Publication year 1963
Keyword(s) arachis hypogaea - aardnoten - plantkunde - groundnuts - botany
Categories Groundnuts
Abstract The influence was investigated of temperature on growth and development of groundnut, cv. Schwarz 21, Mallorca and Ukraine. Except where stated, all conclusions refer to Schwarz 21. Seed germination was not seriously influenced between 24° and 33°C, although the higher temperatures favoured germination and seedling development (Mallorca needed lower temperatures). Constant 33° gave longest stems, most leaves, greatest area of foliage and so higher dry weights of aerial plant parts, but decreased pod production. At 24° vegetative growth was less, despite larger leaves and more pods. The optimum seemed to be 28°. The change from 24° to 33° and from 33° to 24° at various developmental stages showed vegetative growth and flowering complementing each other. Together, however, they competed with fruit set. At 33° the calyx tube was longer and so was the distance travelled by the pollen to effect fertilization. Warmth 36-96 h before flowers opened decreased pollen number and viability. Flowers did not last so long. Vegetative growth was more promoted than generative growth. These observations together probably largely explain the poor setting of fruit at high temperatures. Pollen viability seemed influenced by day and hour of sampling but not by boron sprays.
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