2. The role of plant growth regulators in promotion of flowering

Bonnet-Masimbert, Marc; Zaerr, Joe B.

doi:10.1007/bf00043948

Cited by 18 publications

(4 citation statements)

References 64 publications

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“…However, auxin is known to not be involved in the promotion of flowering. Rather, treatment with auxin inhibits the formation of flowers [30,31]. However, the suppression of blooms is thought to be a secondary effect, involving the induction of ethylene production by auxin in some cases.…”

Section: Discussionmentioning

confidence: 99%

Verification of the Field Productivity of Rehmannia glutinosa (Gaertn.) DC. Developed Through Optimized In Vitro Culture Method

Kim

Komakech

Jeong

et al. 2020

Plants

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Rehmannia glutinosa (Gaertn.) DC is a perennial plant belonging to the family Scropulariidae. The root of R. glutinosa is used in oriental medicine and mainly grown using rootstock rather than seed cultivation, which gives rise to several problems including root rot, and results in a low productivity and poor quality. To solve the challenges involved in R. glutinosa seed cultivation, our team previously used the formative features and genetic analysis of R. glutinosa to determine the optimal in vitro tissue culture conditions for producing sterile culture seedlings and rootstocks of R. glutinosa. The aim of the present study was to identify differences between R. glutinosa standard rootstock seedlings (SR), R. glutinosa culture rootstock seedlings (CR), and culture seedlings (CS) under field conditions. The reproductive characteristics of the aerial part were more robust while the area and length of leaves were smaller for SR than those for CR and CS. The characteristic that differed the most in SR was flowering, which did not occur in CR and CS. In addition, the fresh and dry weights of the subterranean parts of CR and CS were two-fold greater than those of SR. Fourier transform near-infrared (FT-NIR) analysis showed only slight differences between the chemical constituents of SR and its culture products, which was confirmed by measuring the content of catalpol, an indexing substance. Catalpol had a reduced content in the culture products compared to SR. However, this difference was not significant. Our findings will be useful for the identification of the best seedling type of R. glutinosa to enable its mass production.

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Section: Discussionmentioning

confidence: 99%

Verification of the Field Productivity of Rehmannia glutinosa (Gaertn.) DC. Developed Through Optimized In Vitro Culture Method

Kim

Komakech

Jeong

et al. 2020

Plants

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“…It has been suggested that roots play a key role in flower induction (Bonnet-Masimbert et al 1982, Bonnet-Masimbert andZaerr 1987) because root pruning promotes flower induction, and other flower induction treatments, including stem injection of GAs, reduce root activity (Figure 1). However, little has been done to characterize the effects of rootstock on flowering (Schmidtling 1983), a task complicated by the fact that grafting stimulates flowering independently of the quality of the rootstock.…”

Section: Stimulation Of Floweringmentioning

confidence: 99%

From flower induction to seed production in forest tree orchards

Bonnet-Masimbert¹,

Webber²

1995

Tree Physiology

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We review developments in cone and seed production research during the past decade. We conclude that although cone induction techniques, including hormonal and cultural procedures, have been refined, they still do not fully overcome juvenility or noninductive environmental effects. The role pollen plays in enhancing seed production and the genetic quality of seed is discussed. Techniques for handling pollen are described, in vitro viability assays are reviewed, and we also examine recent developments in pollen collection and its artificial ripening.

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“…thaliana : photoperiod, vernalization, autonomous, gibberellin (GA), temperature-sensitive, and age-dependent control [ 10 ]. The regulation and interaction of plant endogenous hormones in plant tissues have direct effects on plant bud differentiation and sex determination [ 11 , 12 , 13 ]. In angiosperms which are monoecism, endogenous GA played a feminine role in the sex determination of Zea mays L. [ 14 ].…”

Section: Discussionmentioning

confidence: 99%

Transcriptome analysis of Pinus massoniana Lamb. microstrobili during sexual reversal

et al. 2018

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The normal megastrobilli and microstrobilli before and after the sexual reversal in Pinus massoniana Lamb. were studied and classified using a transcriptomic approach. In the analysis, a total of 190,023 unigenes were obtained with an average length of 595 bp. The annotated unigenes were divided into 56 functional groups and 130 metabolic pathways involved in the physiological and biochemical processes related to ribosome biogenesis, carbon metabolism, and amino acid biosynthesis. Analysis revealed 4,758 differentially expressed genes (DEGs) between the mega- and microstrobili from the polycone twig. The DEGs between the mega- and microstrobili from the normal twig were 5,550. In the polycone twig, 1,188 DEGs were identified between the microstrobili and the sexually reversed megastrobili. Concerning plant hormone signal transduction pathways, the DEGs from both the normal and polycone twigs displayed distinct male or female associated expression patterns. There were 36 common hormone-related DEGs from the two types of twigs of P. massoniana. Interestingly, expression of these DEGs was up-regulated in the bisexual strobili, which underwent the sexual reversal. A portion of MADS-box genes in the bisexual strobili were up-regulated relative to expression in microstrobili.

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2. The role of plant growth regulators in promotion of flowering

Cited by 18 publications

References 64 publications

Verification of the Field Productivity of Rehmannia glutinosa (Gaertn.) DC. Developed Through Optimized In Vitro Culture Method

Verification of the Field Productivity of Rehmannia glutinosa (Gaertn.) DC. Developed Through Optimized In Vitro Culture Method

From flower induction to seed production in forest tree orchards

Transcriptome analysis of Pinus massoniana Lamb. microstrobili during sexual reversal

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