Macrosporogenesis and Development of the Macrogametophyte of Solanum tuberosum

Rees-Leonard, Olive L.

doi:10.1086/334519

Cited by 26 publications

(7 citation statements)

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“…Macrosporogenesis in Duboisia is therefore similar to that in other described species of Solanaceae (e.g. Cooper 1931;Rees-Leonard 1935;Smith 1935;Cochran 1938).…”

Section: Macrosporogenesissupporting

confidence: 81%

Microsporogenesis, Macrosporogenesis, and Development of the Macrogametophyte and Seeds of Duboisia Leighhardtii (F.v.M.) and D. Myoporoides (R.Br.)

Barnard¹

1949

Aust. Jnl. Of Bio. Sci.

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SummaryIn Duboisia Leichhardtii and D. myoporoides macrosporogenesis and the development of the embryo-sac are similar to the descriptions reported for other genera of the family Solanaceae.The haploid number of chromosomes in both species is 30. A generative and vegetative nucleus is formed in each micros pore which later becomes filled with starch grains and uninucleate as a result of degeneration of the vegetative nucleus. At maturity the pollen grains are devoid of starch and are uninucleate. Division of the generative nucleus to form two male nuclei presumably occurs just prior to the discharge of the pollen tube.Double fertilization occurs and the fusion of one male nucleus with the fusion nucleus takes place before fertilization of the egg.Embryogeny is comparable to published descriptions for other genera of the Solanaceae but the development of the endosperm is different.A primary endosperm of large thin-walled cells is present until the stage when the ovules have almost reached mature seed size and the embryo is at about the 14-celled stage. Meristematic activity commencing in cells in the vicinity of the embryo then results in the formation of a dense compact "secondary" endosperm. Cells of the secondary endosperm become filled with oil.Degeneration of whole ovules may take' place but "empty" seed develop from ovules which contain no embryo and in which secondary endosperm has not formed.

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“…Macrosporogenesis in Duboisia is therefore similar to that in other described species of Solanaceae (e.g. Cooper 1931;Rees-Leonard 1935;Smith 1935;Cochran 1938).…”

Section: Macrosporogenesissupporting

confidence: 81%

Microsporogenesis, Macrosporogenesis, and Development of the Macrogametophyte and Seeds of Duboisia Leighhardtii (F.v.M.) and D. Myoporoides (R.Br.)

Barnard¹

1949

Aust. Jnl. Of Bio. Sci.

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“…Included in these investigations are the studies of REES-LEONARD (1935), CLARKE (1940), WILLIAMS ( ) on S. tubemrum, BHADURI (1935 on S. melongena), BEAMISH (1955), WALKER (1955) on S. demisrum, LEE and CooPER (1958) on S. pinnatisectum, and DNYANASAGAR and CooPER (1960) on S. phureja. Early embryological studies in this family have been summarized by SCHNARF (1931 ).…”

Section: Downloaded By [North West University] At 12:18 20 December 2014mentioning

confidence: 99%

Cytogenetical Studies in Relation to the Origin and Differentiation of Species in the GenusSolanumL.

1962

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“…Should such an interpretation be accepted in the case of species where the integument starts to develop near the apical portion of the nucellus and not at or from its base? In Datura, as in Lycopersicon (Cooper, 1931), in Solanum (Rees-Leonard, 1935) and in Ulmus (Walker, 1938) the integument arises as an outgrowth of the epidermis at the level just below the archesporial cell, and continues its growth outward around the upper portion of the nucellus. There is a large mass of parenchymatous nucellar tissue below the archesporial cell, which is not invested by the integument.…”

Section: Periclinal Chimeras In Datura In Relation To the Developmentmentioning

confidence: 99%

Periclinal Chimeras in Datura in Relation to the Development and Structure of the Ovule

Satina

1945

American J of Botany

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Macrosporogenesis and Development of the Macrogametophyte of Solanum tuberosum

Cited by 26 publications

References 0 publications

Microsporogenesis, Macrosporogenesis, and Development of the Macrogametophyte and Seeds of Duboisia Leighhardtii (F.v.M.) and D. Myoporoides (R.Br.)

Microsporogenesis, Macrosporogenesis, and Development of the Macrogametophyte and Seeds of Duboisia Leighhardtii (F.v.M.) and D. Myoporoides (R.Br.)

Cytogenetical Studies in Relation to the Origin and Differentiation of Species in the GenusSolanumL.

Periclinal Chimeras in Datura in Relation to the Development and Structure of the Ovule

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