Library Catalogue

Library Catalogue

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    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.

Record number 104314
Title Studies on the inheritance of leaf shape in Nicotiana tabacum L.
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door Jacob Hendrik van der Veen
Author(s) Veen, J.H. van der
Publisher 's-Gravenhage : Excelsior
Publication year 1957
Description 112 p ill
Notes Proefschrift Wageningen
Tutors Prakken, Prof. Dr. R.
Graduation date 1957-12-06
Dissertation no. 236
Author abstract show abstract
Variation in leaf shape of tobacco depended mainly on three independently segregating gene-pairs with intermediate heterozygotes. Br-br acted on the leafbase only, giving broadly and narrowly winged (sessile and petioled) leaves. Pt- pt and Pd-pd were cumulative, and acted on the amount of mesophyll. The effect of Pt was twice that of Pd. From ptptpdpd to PtPtPdPd, the leaf-base or petiole became longer, the angle of lateral veins more acute and the leaf-blade narrower, but the length of the midrib and the lateral veins stayed the same.

Among sessile (BrBr) types, variation due to Pt-pt and Pd-pd was continuous, so that the sessile first filial generations must be test-crossed with petioled (brbr) types, to enable classification for petiole length, which was the main criterion. Even then, allowance must be made for the number of leaves, since a higher number induced an upward extension of the region of increasing petiole length, and consequently increased the maximum petiole length of the plant.

The data of previous authors were analysed and, where necessary, reinterpreted. This analysis confirmed that variation in leaf shape of tobacco could be explained in terms of the three gene-pairs.

Online full textINTERNET
On paper FORUM ; STACKS ; 530E17
FORUM ; STACKS ; NN08202,236
Keyword(s) (cab) leaves / nicotiana / tobacco / plant breeding
Categories Stimulant Crops / Plant Morphology
Publication type PhD thesis
Language English
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