The Oenothera Hookeri Group
نویسندگان
چکیده
منابع مشابه
Twin Hybrids of Oenothera Hookeri
The researches of MORGAN on lethal factors, of BARTLETT on mass mutation, and of RENNER on empty seeds, have led me of late to the conception that lethal factors and hybrid mutants play a large part in the splitting phenomena which accompany the normal mutations of so many species of Oenothera. The question, which part of those phenomena may be explained by this view, has to be faced. The cross...
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EARLY all of the North American euoenotheras east of the Rocky Mountains Nremain heterozygous generation after generation even though they have the self-pollinating habit. A specialized cytogenetic mechanism involving multiple reciprocal translocations and a balanced lethal system accounts for this paradox. These Oenotheras possess 14 chromosomes of which each set of seven, because of reciproca...
متن کاملGrowing evening primroses (Oenothera)
The model plant Oenothera has contributed significantly to the biological sciences and it dominated the early development of plant genetics, cytogenetics, and evolutionary biology. The great advantage of using Oenothera as a model system is a large body of genetic, cytological, morphological, and ecological information collected over more than a century. The Oenothera system offers a well-studi...
متن کاملMeiosis in the Pollen Mother Cells of OENOTHERA BIENNIS and OENOTHERA BIENNIS SULFUREA.
TABLE OF CONTENTS PAGE 1NTRODUCTlON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Description.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Early prophase stages. . . . . . . . . . . . . . . . . . . . . . . . . . ....
متن کاملOenothera Plastome Mutator-Induced Chloroplast Mutant1
Plastids were isolated from a plastome mutator-induced mutant (pm7) of Oenothera hookeri and were analyzed for various physiological and biochemical attributes. No photosynthetic electron transport activity was detected in the mutant plastids. This is consistent with previous ultrastructural analysis showing the absence of thylakoid membranes in the pm7 plastids and with the observation of aber...
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ژورنال
عنوان ژورنال: Aliso
سال: 1949
ISSN: 2327-2929
DOI: 10.5642/aliso.19490201.02