Hormones and Pod Development in Oilseed Rape (<i>Brassica napus</i>)

Bouille, P. De; Sotta, Bruno; Miginiac, Émile; Merrien, André

doi:10.1104/pp.90.3.876

Cited by 26 publications

(8 citation statements)

References 18 publications

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“…Another factor which affects the evapotranspirational demands of plants may be the number of individual B. napus plants per unit area, which is due to the high compensation ability of plants (Diepenbrock and Becker, 1995) (Figure 1), even if the PAR and VPD values were the same before as well as after the BBCH 81-83 stages. This indirectly supports the results of phytohormone growth in the siliqua (pods) and the following photosynthesis inhibition (Bouille et al, 1989;Hauser et al, 1990). Singal et al (1995) proved photosynthesis intensity decline in the siliqua of Brassica campestris L. plants as dependent on the senescence process.…”

Section: Methodssupporting

confidence: 59%

“…The pods undergo photosynthesis after the flowering phase (Singal et al, 1995). Successive physiological processes associated with the senescence process of the plant, which are, for example, displayed by changes in the hormonal level in the pods (Bouille et al, 1989), affect the decrease in the activities of photosynthetic and water consumption (Hauser et al, 1990). The transpiration values of an individual plant and their conversion to the whole stand are relatively well documented in trees (Schulze et al, 1985;Č ermák et al, 1995, etc.).…”

Section: Introductionmentioning

confidence: 97%

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Consumptive use of water in Brassica napus L. from flowering to ripening stage under rainless region conditions

Pivec

Brant

Bečka

et al. 2010

Irrigation and Drainage

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Section: Methodssupporting

confidence: 59%

Section: Introductionmentioning

confidence: 97%

Consumptive use of water in Brassica napus L. from flowering to ripening stage under rainless region conditions

Pivec

Brant

Bečka

et al. 2010

Irrigation and Drainage

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“…Drought stress during the reproductive growth stages creates a hormone imbalance that inhibits pod formation and seed development, causing Brassica species to drop damaged flowers and focus energy into younger flowers (Canola Watch, 2016). Drought stress during reproductive development reduces levels of hormones (cytokinins and auxins) that prevent flower and pod abortion, resulting in hormonal imbalances within the plant (de Bouille et al, 1989). Although both locations recorded temperatures higher than 25°C during the critical growth stages, temperatures were elevated for a longer period, and moisture conditions were less favorable at Pierre in both years.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen Requirements of Ethiopian Mustard for Biofuel Feedstock in South Dakota

et al. 2019

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Core Ideas Brassica carinata is a new crop in the Northern Great Plains. Best management practices including N fertilizer recommendations should be developed. Seed yield and oil yield were optimized at 84 kg ha–1 of applied N fertilizer. Seed oil concentration decreased linearly at a rate of 0.26 g kg–1 for every 1 kg ha–1 increase in N rate. Economic optimum N rate varied from 60 to 81 kg N ha–1. ABSTRACT Ethiopian mustard (Brassica carinata A. Braun) is a non‐food oilseed crop that has received attention for its potential as a low‐input biofuel feedstock suitable for production in the semiarid regions of the Northern Great Plains (NGP). Because B. carinata is a new crop to the NGP, the best management practices have yet to be developed. The objective of the study was to evaluate the effects of N fertilizer rate on seed yield, seed oil concentration, and oil yield of B. carinata and to determine the economic optimum N fertilizer rates. Field studies were conducted at two locations in South Dakota to evaluate the response of two B. carinata varieties to five N fertilizer rates (0, 28, 56, 84, and 140 kg N ha−1) during the 2015 and 2016 growing seasons. Increasing N fertilizer rate increased seed yield and oil yield, each reaching a peak at 84 kg ha−1 N and then slowly decreasing following a quadratic model. On the other hand, increasing N rate linearly decreased seed oil concentration. The economic optimum N rate ranged from 60 to 81 kg N ha−1 depending on cost of N fertilizer and the price of carinata seed. These results show that the N requirement for B. carinata is lower than that for many crops grown in the NGP, including corn and small grains. These findings confirm that B. carinata requires low N fertility and has the potential for incorporation into cropping systems in the semiarid regions of the NGP.

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“…Since pod length was closely associated with the number of seeds from very early on, and a higher cell division in chlorenchyma and parenchyma of the pod wall was found in the presence of seeds, it is reasonable to assume that seeds initially produce cytokinin-like substances that induce cell division. Studies in winter rape showed that concentrations of cytokinins (zeatin and zeatin riboside) reached peak levels on the third 10 100 day, when pods were c. 10 mm in length (de Bouille et al 1989). A major peak in cytokinin concentration of lupin seeds was shown to coincide with the stage of cell division in the fruit wall (Readman 1983).…”

Section: Seed Number and Development Of The Pod Wall {Expt 1)mentioning

confidence: 99%

Growth and development of the pod wall in spring rape (Brassica napus) as related to the presence of seeds and exogenous phytohormones

Ancha

Morgan

1996

J. Agric. Sci.

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S U M M A R YPod wall photosynthesis is known to contribute to nearly one-third of rape (Brassica napus) seed weight. The relationship between the number of seeds and the growth of the pod wall, and the effects of single and mixed applications of gibberellic acid (GA), naphthyl acetic acid (NAA) and benzyl adenine (BA) on development of the pod wall were, therefore, examined in potted plants of spring rape under glasshouse conditions.The size and weight of the pod wall were closely associated with the number of seeds per pod, and a stronger development of tissues was observed in the presence of seeds. Application of BA alone or in combination with GA (GA + BA) to emasculated flowers induced the development of parthenocarpic pods similar in size and shape to the untreated seeded pods. NAA applied singly or in mixtures produced abnormal pods. BA enhanced cell division in all tissues while GA and NAA caused expansion of parenchyma in the mesocarp. Application of BA or GA + BA at 1-5 rather than at 11-15 days after flower opening led to the development of bigger pods. Younger pods responded more than the older ones when they were treated simultaneously. BA or GA + BA application to nonemasculated flowers on the terminal raceme delayed senescence in both basal and apical pods but it increased pod size only in the latter. The balance of cytokinins and gibberellins within a pod seems to play an important role in regulating the growth of the pod wall.

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Hormones and Pod Development in Oilseed Rape (Brassica napus)

Abstract: The endogenous levels of several plant growth substances (indole acetic acid, IAA; abscisic acid, ABA; zeatin, Z; zeatin

Cited by 26 publications

References 18 publications

Consumptive use of water in Brassica napus L. from flowering to ripening stage under rainless region conditions

Consumptive use of water in Brassica napus L. from flowering to ripening stage under rainless region conditions

Nitrogen Requirements of Ethiopian Mustard for Biofuel Feedstock in South Dakota

Growth and development of the pod wall in spring rape (Brassica napus) as related to the presence of seeds and exogenous phytohormones

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