At the outset of the investigation, it was hoped to elucidate details of meiosis and fertilisation in dioecious and monoecious monocotyledons, with especial reference to the possible presence of sex chromosomes. The chromosomes of the dioecious and monoecious forms examined however, have not lent themselves to such a study, whereas the chromosomes of the hermaphrodite Scilla nonscripta, have proved especially interesting. This plant has therefore latterly been studied almost to the exclusion of others. Scilla nonscripta. The chromosomes during mitosis and meiosis are conceived as always consisting of at least two regularly intertwined spiral chromonemata. An attempt has been made to harmonise this conception, already held by many writers fo...
A post-zygotic mechanism of sex determination is described in the two symphypleonans Dicyrtomina orn...
11 p.-6 fig.1. The prophases of meioses in a particular pollen-sac of the monocotyledons Scilla non-...
Abstract While the question of why organisms repro-duce sexually is still a matter of controversy, i...
The chromosomes of Cycas pectinata are studied from root tip and pollen mitoses. The male and female...
Plants monosomic for chromosome 9 of Gossypium hirsutum, in addition to Haplo 9 plants, produce many...
A cytomorphological study of Pelvetiopsis limitata (Setchell) Gardner confirmed a cytological altern...
The development of male gametophytes in diploid and monosomic-1, -2, -3, -4, -6, -7, -8, -9, and -10...
It seems a conservative statement to say that studies of the past twenty years among animal forms ha...
International audienceSex chromosomes in land plants can evolve as a consequence of close linkage be...
Unlike in animals, dioecy among flowering plants is a rare phenomenon. The vast majority of angiospe...
In the plant kingdom, events of whole genome duplication or polyploidization are generally believed ...
Chromosome association and chiasma formation were studied in pollen mother cells at metaphase I of f...
17 garden varieties and their offsprings of Primula malacoides were studied cytologically. 13 variet...
The paper reports meiotic studies on 50 populations comprising 12 species belonging to 5 genera of C...
In the plant kingdom, events of whole genome duplication or polyploidization are generally believed ...
A post-zygotic mechanism of sex determination is described in the two symphypleonans Dicyrtomina orn...
11 p.-6 fig.1. The prophases of meioses in a particular pollen-sac of the monocotyledons Scilla non-...
Abstract While the question of why organisms repro-duce sexually is still a matter of controversy, i...
The chromosomes of Cycas pectinata are studied from root tip and pollen mitoses. The male and female...
Plants monosomic for chromosome 9 of Gossypium hirsutum, in addition to Haplo 9 plants, produce many...
A cytomorphological study of Pelvetiopsis limitata (Setchell) Gardner confirmed a cytological altern...
The development of male gametophytes in diploid and monosomic-1, -2, -3, -4, -6, -7, -8, -9, and -10...
It seems a conservative statement to say that studies of the past twenty years among animal forms ha...
International audienceSex chromosomes in land plants can evolve as a consequence of close linkage be...
Unlike in animals, dioecy among flowering plants is a rare phenomenon. The vast majority of angiospe...
In the plant kingdom, events of whole genome duplication or polyploidization are generally believed ...
Chromosome association and chiasma formation were studied in pollen mother cells at metaphase I of f...
17 garden varieties and their offsprings of Primula malacoides were studied cytologically. 13 variet...
The paper reports meiotic studies on 50 populations comprising 12 species belonging to 5 genera of C...
In the plant kingdom, events of whole genome duplication or polyploidization are generally believed ...
A post-zygotic mechanism of sex determination is described in the two symphypleonans Dicyrtomina orn...
11 p.-6 fig.1. The prophases of meioses in a particular pollen-sac of the monocotyledons Scilla non-...
Abstract While the question of why organisms repro-duce sexually is still a matter of controversy, i...