Union Catalogue of Agricultural Libraries in the Netherlands
The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.
Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.
The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.
As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".
All titles are entered in their original language. Keywords are added to facilitate subject searching.
The database is updated every day and now contains over 830.000 records.
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.
There are no comments yet. You can post the first one!
Post a comment
To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.
For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.