Analyse du port chez des<i>Petunia</i>

Brunaud, André; Bugnon, François; Cornu, A.

doi:10.1080/00378941.1977.10835756

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…This observation is not unexpected, since it is known that leaf parameters in Petunia are significantly influenced by environmental conditions such as temperature, light intensity and duration, and nutrient levels. For example, Brunard et al (1977) observed similar environmental influences on the habit of Petunia in a comparative study of the same species examined herein. Likewise, vegetative plant data enumerated during different seasons in an earlier study (Sink et a l .…”

Section: Resultssupporting

confidence: 53%

VEGETATIVE AND FLORAL CHARACTERS OF PETUNIA SPECIES HYBRIDS AS RELATED TO THE ORIGIN OF PETUNIA HYBRIDA

Sink¹

1981

Can. J. Genet. Cytol.

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Three vegetative and six floral characters of Petunia axillaris (Lam.) B.S.P., P. inflata Fries, P. parodii W.C.S., and P. violacea Lindl., their reciprocal hybrids and 14 P. hybrida Vilm. cultivars were measured and comparisons made to gain further information on the origin of the garden petunia. Evaluation of the floristic data plus flower color requirements and breeding behavior excluded P. parodii as a possible ancestor. P. axillaris crossed with P. inflata produced hybrids that may account for the range of variability observed in the cultivars, flower color array and introduction of self-incompatability genes.

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Section: Resultssupporting

confidence: 53%

VEGETATIVE AND FLORAL CHARACTERS OF PETUNIA SPECIES HYBRIDS AS RELATED TO THE ORIGIN OF PETUNIA HYBRIDA

Sink¹

1981

Can. J. Genet. Cytol.

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“…For many species, differences occur in growth habit between cultivars. In different petunia cultivars, the number of nodes that produce branches can vary, as well as the positioning of the basal branches along the shoot axis (Brunaud et al, 1977 ; Drummond et al, 2009b ).…”

Section: Introductionmentioning

confidence: 99%

The expression of petunia strigolactone pathway genes is altered as part of the endogenous developmental program

et al. 2012

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Analysis of mutants with increased branching has revealed the strigolactone synthesis/perception pathway which regulates branching in plants. However, whether variation in this well conserved developmental signaling system contributes to the unique plant architectures of different species is yet to be determined. We examined petunia orthologs of the Arabidopsis MAX1 and MAX2 genes to characterize their role in petunia architecture. A single ortholog of MAX1, PhMAX1 which encodes a cytochrome P450, was identified and was able to complement the max1 mutant of Arabidopsis. Petunia has two copies of the MAX2 gene, PhMAX2A and PhMAX2B which encode F-Box proteins. Differences in the transcript levels of these two MAX2-like genes suggest diverging functions. Unlike PhMAX2B, PhMAX2A mRNA levels change in leaves of differing age/position on the plant. Nonetheless, this gene functionally complements the Arabidopsis max2 mutant indicating that the biochemical activity of the PhMAX2A protein is not significantly different from MAX2. The expression of the petunia strigolactone pathway genes (PhCCD7, PhCCD8, PhMAX1, PhMAX2A, and PhMAX2B) was then further investigated throughout the development of wild-type petunia plants. Three of these genes showed changes in mRNA levels over a development series. Alterations to the expression patterns of these genes may influence the branching growth habit of plants by changing strigolactone production and/or sensitivity. These changes could allow both subtle and dramatic changes to branching within and between species.

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Vegetative Branching in Petunia

Drummond

Ledger²,

Simons³

et al. 2009

Petunia

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Analyse du port chez desPetunia

Abstract: Summaru. -Habit of twelve )ines of Pt•funia hubrida and threc lincs of Petunia axiflaris, uiolaeea and parodii : the gcnetie differ·cm·es bctwccn lhcsc !ines t!o appcar in the expression of this trait, sorne charactcristil·s of which vary in relation to the endronmental conditions.

Cited by 3 publications

References 2 publications

VEGETATIVE AND FLORAL CHARACTERS OF PETUNIA SPECIES HYBRIDS AS RELATED TO THE ORIGIN OF PETUNIA HYBRIDA

VEGETATIVE AND FLORAL CHARACTERS OF PETUNIA SPECIES HYBRIDS AS RELATED TO THE ORIGIN OF PETUNIA HYBRIDA

The expression of petunia strigolactone pathway genes is altered as part of the endogenous developmental program

Vegetative Branching in Petunia

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