Phenolic Compounds Influence Seed Dormancy of Palicourea rigida H.B.K. (Rubiaceae), a Medicinal Species of the Brazilian Savannah

Inácio, MC; Moraes, RM; Mendonça, PC; Morel, Lucas Junqueira de Freitas; França, SC; Bertoni, BW; Pereira, Ams

doi:10.1055/s-0033-1336448

Cited by 3 publications

(4 citation statements)

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“…Higher total phenolic content was correlated to higher emergence percentages for most of the treatments applied. There are previous studies confirming the negative effects of phenolic compounds on the germination of seeds of several species, including Pinus laricio [73], Coffea arabica [74], Cistus ladanifer [75], and lettuce [76]. The allelopathic effect of some of the phenolic compounds detected in this study is well known, such as vanillic acid, p-hydroxybenzoic acid, and p-vanillin [77,78].…”

Section: Multivariate Analysissupporting

confidence: 80%

Seed Characterization and Evaluation of Pre-Germinative Barriers in the Genus Alstroemeria (Alstroemeriaceae)

Aros,

Barraza,

Peña-Neira

et al. 2023

Seeds

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The genus Alstroemeria originates from South America, and Chile is one of the countries showing the highest number of taxa (49), of which 40 are endemic. However, anthropogenic and environmental factors are affecting the survival of these species; therefore, the conservation of their genetic variability is of great importance, and can be achieved through seed propagation. Seeds of this genus normally show dormancy, which prevents their germination under favorable conditions. The objective of this work was to understand the pre-germinative barriers to develop a seed propagation protocol for native alstroemerias and to determine the best method to break their dormancy. Seeds from 10 Alstroemeria species native to Chile were collected from the Coquimbo Region to Maule Region, and 5 pre-germination treatments combining scarification and stratification methods were evaluated. Moreover, a morphological and biochemical evaluation of the seeds was performed. The results showed a positive and significant effect on the percentage of emergence using seed soaking in water and cold stratification at 13 °C, obtaining the best results in A. pelegrina and A. angustifolia subsp. angustifolia (98.33% and 91.67%, respectively) after 30 days. The morphological characterization of seeds showed a wide range of size (diameter), from 2.18 mm (A. pulchra subsp. pulchra) up to 3.43 mm (A. pelegrina), and different shapes (pseudospherical and angular) and textures (rough and smooth). The highest phenol and tannin concentrations were observed in A. hookeri subsp. maculata with values of 4.71 and 30.95 mg g−1 of seeds, respectively. A bigger size of the seed and a higher concentration of phenols could be related to a higher % of emergence of alstroemeria seeds.

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Section: Multivariate Analysissupporting

confidence: 80%

Seed Characterization and Evaluation of Pre-Germinative Barriers in the Genus Alstroemeria (Alstroemeriaceae)

Aros,

Barraza,

Peña-Neira

et al. 2023

Seeds

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“…The presence of increased lignin and hydrophobic phenols in the mesophyll layer of the hilar area and the palisade layer of the seed coat was previously observed by Marback and Mayer (1974). The presence of phenolic compounds in seeds may be the actives responsible for the species' deep physiological dormancy and seed viability preservation (Inacio et al, 2013). In a study conducted by Development of Mungbean Genotypes for Shattering Tolerance and Correlation Analysis with Biochemical and Morphological .... Weidner et al (1999) cultivars susceptible to sprouting displayed higher germination percentages than those resistant to sprouting.…”

Section: Validation Of Morphological and Biochemical Parameters Gover...mentioning

confidence: 99%

Development of Mungbean Genotypes for Shattering Tolerance and Correlation Analysis with Biochemical and Morphological Factors Governing Pre Harvest Sprouting

Mogali,

Patil,

Ranjita

et al. 2023

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Background: Most of the mungbean genotypes are prone to shattering. The indeterminate flowering habit of this crop leads to a spread of flowering and pod maturity on a single plant over the entire reproductive phase. Consequently, pods which develop at the earliest flower may shatter prior to 100% pod maturity. Sometimes losses due to pre-harvest sprouting will be as high as 60-70%. High yielding varieties developed/identified in recent years, despite their high yield potential, could not increase/stabilize the yields of this crop due to lack of resistance to pre-harvest sprouting. Therefore, an attempt was essentially made to develop tolerant varieties to pre-harvest sprouting in the current investigation. Methods: The F2 (Healthy and well dried) seeds derived from the crosses DGGV-2 ´ Pant Moong-1 were irradiated with 60 kR gamma rays for the creation of desirable variability. The gamma rays irradiated seeds were sown in during kharif-2017 along with their respective checks to grow the F2M1 generation. Further advanced to F2M2. The individual plants were critically observed at maturity for morphological traits viz., small pod beak length and angle, thick pod wall and hard seededness that determine the tolerance to PHS. The mutant lines were compared with the parental lines viz., shattering tolerant variety Pant Moong-1 as well as susceptible variety DGGV2. The putative mutants selected and tagged in F2M2 and the seeds were harvested separately and forwarded to develop the F2M3 mutant population (1000 plants) in summer-2018. The seeds from F2M3 generation were harvested on individual plant basis and were sown. 806 progenies were sown in augmented design along with the checks in each block during kharif 2019. Thus from the population of 24812 such derived plants, genotypes with small pod beak and angle, thick pod wall, hard seededness and higher epicuticular wax and lignin content were isolated in F2M3 and F2M4. Further a total of 49 advanced breeding lines along with a known shattering susceptible check were studied for the morphometric and biochemical parameters governing the pre harvest sprouting. Result: Lower PHS was recorded in DGGV-79 (0.02%), DGGV-125 (0.02%) and DGGV 195 (0.91%). Higher phenol content was recorded in DGGV-125 (9.43 mg GA eq /g) and DGGV-79 (9.37 mg GA eq /g). Higher lignin content was recorded in DGGV-125 (6.42 mg/g) and DGGV-79 (6.10 mg GA eq /g). Further correlation analysis revealed that negative correlation of PHS was observed for epicuticular wax (r= -0.983), phenol (r= -0.892), lignin content (r= -0.981) and hard seed percentage (r= -0.942). Significant negative correlation was observed between PHS and pod wall thickness (r= -0.570). Pod beak length recorded highly significant positive correlation (r= 0.911) to PHS. Genotypes with inherent tolerance to seed shattering hold a promise to minimize yield losses due to viviparous germination.

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“…In the process of land use changes, there are also activities such as forest clearing for agriculture, wood extraction, settlement and infrastructure expansion that are attributed to deforestation process. (Prasetyo et al 2009) This practice threats species diversity and promotes exhaustion of natural resources (Inácio et al 2013). Such environmental changes are further aggravated by the rapidly increasing population number throughout the world placing high pressure on the forests, which calls for urgent action (Zewdie and Welka 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Such environmental changes are further aggravated by the rapidly increasing population number throughout the world placing high pressure on the forests, which calls for urgent action (Zewdie and Welka 2015). Conservation of utility plants is an important task that promotes species sustainability and maintains healthy ecosystems (Inácio et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Seed germination and seedling growth of Chiococca javanica (Rubiaceae) in relation to fruit maturation and media growth

Purwantoro

2017

Nusantara Biosci

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Abstract. Purwantoro RS. 2017. Seed germination and seedling growth of Chiococca javanica (Rubiaceae) in relation to fruit maturation and media growth. Nusantara Bioscience 9: 111-119. Chiococca javanica is a plant having ornamental potential. The seeds extracted from the fruits were classified according to maturity stage: Unripe -yellow; ripe -reddish; and over ripe -dark-red and seed germination were done in two germination media: sand and rice husk. The statistical approach was a randomized complete block design with three replications. Analysis of variance indicated that the seeds of C. javanica from the ripe and over ripe fruit had higher significances (P<0.05) on germination capacity, speed of germination, mean germination time, mean daily germination, peak value and germination value than the seeds from yellow fruits. The effect of growing media on germination process showed higher significance in sand than that in rice husk. Similarly, mean daily germination in sand was higher than that in rice husk. All seedling growth parameters of the seeds from ripe and over ripe fruit showed significant different on number of leaves, shoot length, diameter of seedlings, number of lateral roots, roots length, fresh weight and dry weight of plants than the seeds from unripe fruit.

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Phenolic Compounds Influence Seed Dormancy of Palicourea rigida H.B.K. (Rubiaceae), a Medicinal Species of the Brazilian Savannah

Cited by 3 publications

References 0 publications

Seed Characterization and Evaluation of Pre-Germinative Barriers in the Genus Alstroemeria (Alstroemeriaceae)

Seed Characterization and Evaluation of Pre-Germinative Barriers in the Genus Alstroemeria (Alstroemeriaceae)

Development of Mungbean Genotypes for Shattering Tolerance and Correlation Analysis with Biochemical and Morphological Factors Governing Pre Harvest Sprouting

Seed germination and seedling growth of Chiococca javanica (Rubiaceae) in relation to fruit maturation and media growth

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