These researches were undertaken with a view to working out certain little known phases of the life history of our local species of dandelion, and particularly with a view to confirming or disproving the following widely accepted conjecture of Raunkjiaer; Species Danicae Taraxaci castratione agamice propagari demonstratum est; species onmes Taraxaci semper parthenogenetice propagari verisimile est. The problem has been found to involve difficulties and obscurities which will require considerable time to effectually disentangle, but results have already been secured which we believe ourselves justified in setting forth. During the work we have been much in debt to the late Dr. Charles E. Bessey for his cheerfully given and suggestive help,...
[7] Summary Microevolution refers to evolutionary changes at or below the species level. These chang...
Some dandelions are diplosporous gametophytic apomicts. In order to study the inheritance and breakd...
In the autonomous apomictic Taraxacum offinale (common dandelion), parthenogenetic egg cells develop...
These researches were undertaken with a view to working out certain little known phases of the life ...
The work of which the results are here offered, awaiting detailed presentation in a paper to follow,...
These investigations are the outgrowth of a study, begun in 1914 at the instance of the late Profess...
This study represents the first report on the embryological characteristics of triploid male-sterile...
The genus Taraxacum Wigg. (Asteraceae) forms a polyploid complex within which there are strong links...
In 1930 Mr. Emil Madsen of this laboratory began some experimental work upon the roots of dandelions...
To the editor of Science: Since several species of Taraxacum are parthenogenetic and at the same tim...
The variability of Taraxacum has frequently been recorded in botanical literature without receiving ...
Closely related plant species often exhibit differences in ploidy level, mode of reproduction, and t...
Abstract. The present paper reports on our observations on embryological processes occurring in the ...
To the casual observer the dandelions which prove so serious a pest in lawns and elsewhere, appear t...
Apomixis is asexual plant reproduction through seeds that are produced with no prior genome reductio...
[7] Summary Microevolution refers to evolutionary changes at or below the species level. These chang...
Some dandelions are diplosporous gametophytic apomicts. In order to study the inheritance and breakd...
In the autonomous apomictic Taraxacum offinale (common dandelion), parthenogenetic egg cells develop...
These researches were undertaken with a view to working out certain little known phases of the life ...
The work of which the results are here offered, awaiting detailed presentation in a paper to follow,...
These investigations are the outgrowth of a study, begun in 1914 at the instance of the late Profess...
This study represents the first report on the embryological characteristics of triploid male-sterile...
The genus Taraxacum Wigg. (Asteraceae) forms a polyploid complex within which there are strong links...
In 1930 Mr. Emil Madsen of this laboratory began some experimental work upon the roots of dandelions...
To the editor of Science: Since several species of Taraxacum are parthenogenetic and at the same tim...
The variability of Taraxacum has frequently been recorded in botanical literature without receiving ...
Closely related plant species often exhibit differences in ploidy level, mode of reproduction, and t...
Abstract. The present paper reports on our observations on embryological processes occurring in the ...
To the casual observer the dandelions which prove so serious a pest in lawns and elsewhere, appear t...
Apomixis is asexual plant reproduction through seeds that are produced with no prior genome reductio...
[7] Summary Microevolution refers to evolutionary changes at or below the species level. These chang...
Some dandelions are diplosporous gametophytic apomicts. In order to study the inheritance and breakd...
In the autonomous apomictic Taraxacum offinale (common dandelion), parthenogenetic egg cells develop...