Genetic Studies in Dioecious Melandrium by Gerrit Van Nigtevecht

By Gerrit Van Nigtevecht

Show description

Read Online or Download Genetic Studies in Dioecious Melandrium PDF

Similar nonfiction_11 books

Surgical Neuroangiography: 4 Endovascular Treatment of Cerebral Lesions

According to the foundations of useful vascular anatomy and endovascular remedy defined within the first 3 volumes of Surgical Neuroangiography, Volumes four and five entire the sequence that takes a progressive procedure in endovascular neurosurgery. The authors are global leaders, recipients of various prizes in medication, and will supply the original fruit in their mixed anatomical, scientific and healing event to enquire and comprehend the sickness procedure, its anatomical positive aspects and its courting to sufferers' indicators and therapy making plans.

Groups and their graphs

This can be the best books for self examine on staff idea. it truly is necessary as a category textual content publication for college students in highschool or freshman undergraduates. hugely suggest this e-book in addition to Pinter's. after all, in case you have sound wisdom of basics, this publication are not a lot use to you with the exception of a couple of graph interpretations of teams

Recent Advances in Aquaculture: Volume 2

It's a tribute to the energy of analysis and improvement in aquaculture that we're capable, in a comparatively few minutes, to supply readers with a moment quantity during this sequence, which has this kind of variety of excessive calibre study and advancements to file. That the 1st quantity used to be so good got has been a resource of serious delight to the editors and supported their conviction as to the necessity for hyperlinks to affix the study laboratory to the fish farm by way of making present study on hand to a much broader variety of strength clients.

Mathematical and Computational Aspects

This e-book includes the edited models of lots of the papers provided on the ninth foreign convention on Boundary parts held on the collage of Stuttgart, Germany from August thirty first to September 4th, 1987, which used to be geared up in co-operation with the Computational Mechanics Institute and GAMM (Society for utilized arithmetic and Mechanics).

Extra resources for Genetic Studies in Dioecious Melandrium

Sample text

In fact the same holds true for the gene abnormal. Therefore both genes might be regarded as sex-determining factors. In the differential part of one or both sex chromosomes, genes must be present that influence the growth of the pollen tubes, thus giving rise to the certation effect. An extreme certation effect, caused by a sp~cial X-chromosome, was demonstrated by crosses that yielded female offspring only (Table 3). Asthereis at the moment no proofthat the genes causing certation are sex-determining genes they must be called sex-linked genes.

We are of the opinion that the distribution ofthefemale flowers and male ones in monoecious plants is of importance. ß'LANDRIUM II 323 recent years on the influence of auxins and related substances on the development of androecium and gynoecium are likewise of interest. Particularly since more data are becoming available about the influence of hormones on gene action. e. the genes that lead to the development of a gynoecium andfor an androecium, create a physiological situation such that a change of this situation always acts in favour of the development of one of the sex organs and consequently against the other.

The time of this event will depend on the strength of the apical clominance and the distance between inhibiting bud and the inhibited ones. GENETICS OF DIOECIOUS MELANDRIUM II 327 In a flower primordium the "apical dominance" could be exerted by the developing pistil. In anormal hermaphroditic flower this apical dominance would not inhibit the formation of stamina. However, a stronger apical dominance of a pistil might inhibit the development of the stamina in the same flower, thus giving rise to an unisexual flower.

Download PDF sample

Rated 4.76 of 5 – based on 19 votes