Meiosis in Pollen Mother Cells of Strains of Oenothera pratincola Bartlett

Kulkarni, Chandrakant G.

doi:10.1086/333933

Cited by 17 publications

(10 citation statements)

References 25 publications

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“…One would expect, therefore, that the disjunction frequency could be changed by selection, and indeed if the differences found between characteristic disjunction frequencies of closely related species (e.g. in Enot1,era, Clcland, 1926 ;Kulkarni, 1929) are genetic, they suggest that selection may in fact bring about such a change. The following account offers direct evidence of the effect on this character of selection among genotypes within a species.…”

Section: Introductionmentioning

confidence: 99%

Genotypic control of chromosome behaviour in rye

Lawrence

1958

Heredity

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Section: Introductionmentioning

confidence: 99%

Genotypic control of chromosome behaviour in rye

Lawrence

1958

Heredity

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“…nitric acid) gave good results. One of Allen's modifications of Bouin's solution, and strong Flemming (for formulae and technique see Kulkarni, 1929a) gave excellent results. Zenker's solution (bichromate of potash 2.5 g., sulfate of soda I g., distilled water 100 cc., mercuric chlorid 5 g., and glacial acetic acid 5 cc.)…”

Section: Methodsmentioning

confidence: 99%

“…The descriptions of early prophase stages in all the forms discussed in this paper except the gray dwarf and the (3(3 hybrid do not differ in any respect from those of the three strains of Oenothera pratincola and mut. formosa previously described (Kulkarni, 1929a) and hence only a very short summary of these stages is presented here. For detailed descriptions and the figures illustrating these stages the reader is referred to the earlier paper.…”

Section: Meiosis In the Pollen Mother Cellsmentioning

confidence: 99%

MEIOSIS IN THE SPOROCYTES OF TWO MUTATIONS OF OENOTHERA PRATINCOLA AND THEIR HYBRIDS

Kulkarni¹

1929

American J of Botany

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“…The results obtained in forms where the diploid number of chromosomes is fourteen are combined in Table II (Cleland, 1927 ;Gates and Sheffield, 1929 ;Hakansson, 1926 ;Kulkarni, 1929 ;Oehlkers, 1926 ;Shef field, 1927 ;Sinoto, 1927). To these must be added several trisomic forms (Cleland, 1927 ;Hakansson, 1926), Oe.…”

Section: Chromosome Linkage As An Inherited Charactermentioning

confidence: 99%

“…(ii) Mutations, like the wild species, may contain many paired chromosomes or may exhibit a large amount of linkage, but up to the present only a single mutant with all its chromosomes linked in meiosis has been found (Kulkarni, 1929). Mutants show also an intermediate amount of linkage, especially rings of six chromosomes.…”

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confidence: 99%

Chromosome linkage in oenothera, with special reference to some F ₁ hybrids

1929

Proc. R. Soc. Lond. B.

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Oenothera has placed a large part in our initiation into many new fields of cytological and genetical research. Since ring-formation of chromosomes was first observed in this genus by Cleland a few years ago, it has become apparent as a characteristic of meiosis in several other Angiosperms, but whether these are entirely comparable to Oenothera is at present doubtful. It is to Oenothera that we look for the final solution of many of the difficulties encountered in any endeavour to correlate these phenomena with chromosome behaviour in more typical genera, for within the Onagra group are numerous inter-fertile species, each of which is characterised by its own particular chromosome configuration, which is constant throughout all the pollen mother-cells. Such rings are now known to occur also at reduction division in the embryo-sac mother-cell of a number of forms, and it has been found that similar configurations prevail on the male and female side in any particular species. This is observed by the author to be the ease in Oe. rubricalyx (unpublished) and similar conditions have been described by Håbansson (1928) in several other derivatives of Oe. Lamarckiana . It seemed that a systematic study of the linkage of the chromosomes in a number of pure lines and in the hybrids between them was desirable, in that it might throw some light on the exact nature of pairing and chromosome linkage. Some such hybrids have already been described by Cleland (1927). This paper will deal with the chromosome behaviour in a number of F 1 hybrids between pure lines in which the meiotic divisions have already been studied (Sheffield, 1927).

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Meiosis in Pollen Mother Cells of Strains of Oenothera pratincola Bartlett

Cited by 17 publications

References 25 publications

Genotypic control of chromosome behaviour in rye

Genotypic control of chromosome behaviour in rye

MEIOSIS IN THE SPOROCYTES OF TWO MUTATIONS OF OENOTHERA PRATINCOLA AND THEIR HYBRIDS

Chromosome linkage in oenothera, with special reference to some F ₁ hybrids

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Meiosis in Pollen Mother Cells of Strains of Oenothera pratincola Bartlett

Cited by 17 publications

References 25 publications

Genotypic control of chromosome behaviour in rye

Genotypic control of chromosome behaviour in rye

MEIOSIS IN THE SPOROCYTES OF TWO MUTATIONS OF OENOTHERA PRATINCOLA AND THEIR HYBRIDS

Chromosome linkage in oenothera, with special reference to some F 1 hybrids

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Chromosome linkage in oenothera, with special reference to some F ₁ hybrids