In vitro development of angiosperm floral buds and organs

Male sterility in flowering plants is of tremendous importance not only in molecular and developmental studies of stamen and pollen grains and evolutionary studies on the origin of dioecy, but also in its commercial application in hybrid seed production. This paper reviews the literature on the possible involvement ofplant growth substances (PGSs) in male sterility, and in normal stamen and pollen development. Different experimental approaches on a number of male sterile systems and normal plants have shown that nearly all PGSs, i.e., gibberellins, cytokinins, auxin, abscisic acid, and ethylene, directly or indirectly influence the expression of male sterility. Analyses of endogenous PGSs have revealed that in male sterile plants the level and/or metabolism of more than one PGS is affected. These studies support the suggestion that it is the relative ratio of various PGSs, rather than anyone substance, that is critical for normal stamen and pollen development. It is also proposed that gene-regulated male sterility is likely mediated through an altered balance of endogenous PGSs in developing flowers and stamens.

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In Vitro Maturation of Maize Pollen

Pareddy¹,

Petolino²

1992

Angiosperm Pollen and Ovules

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In vitro development of angiosperm floral buds and organs

Cited by 25 publications

References 88 publications

Environmental, Chemical, and Genetic Control of Flowering

Environmental, Chemical, and Genetic Control of Flowering

Male sterility in flowering plants: are plant growth substances involved?

In Vitro Maturation of Maize Pollen

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