Effect of storage in overcoming seed dormancy of Annona coriacea Mart. seeds

Dresch, Daiane Mugnol; Scalon, Silvana de Paula Quintão; Masetto, Tathiana Elisa

doi:10.1590/0001-3765201420130276

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…Seed dormancy is reduced, and germination promoted by nitrate, gibberellic acid (C 19 H 22 O 6 ; GA) and micronutrients (Finch‐Savage & Leubner‐Metzger, ; Bojovic, ; Farooq et al ., ; Arefi et al ., ; ISTA, ; Dresch et al ., ). Therefore, these chemicals seem worthy of further study for the development of additional strategies to avoid a persistent soil seedbank.…”

Section: Introductionmentioning

confidence: 97%

Overcoming seed dormancy in oilseed rape (Brassica napus L.) with exogenous compounds

et al. 2019

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Dormant seeds of oilseed rape (OSR) can persist in the soil and cause OSR volunteers in subsequent crops. Several approaches were tested in the laboratory and in the field to determine whether dormancy induction and seed persistence can be reduced by using dormancy-breaking exogenous compounds. In a laboratory experiment, OSR seeds were coated with KNO 3 , micronutrients, or gibberellic acid (GA) prior to a secondary dormancy test. In a field experiment, seeds were coated in a manner analogous to the laboratory experiment, and then buried 10 cm deep in the soil for 2.5 months. In a practical demonstration, OSR plants were sprayed with either urea ammonium nitrate (UAN) or a commercial product containing GA prior to seed maturity. Seed coating (laboratory and field experiments) reduced secondary dormancy and seed persistence in the field by up to 99%. The efficiency of the treatments for mitigating secondary dormancy (laboratory and field experiments) in decreasing order was GA > micronutrients > KNO 3 > control. With pre-maturity spraying (practical demonstration), UAN reduced primary dormancy by up to 77% and the development of secondary dormancy by up to 38%; GA had no effect. Dormancy and seed persistence of OSR seeds may be reduced by a prematurity UAN treatment of OSR mother plants, or by applying appropriate exogenous compounds to OSR seeds.

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Section: Introductionmentioning

confidence: 97%

Overcoming seed dormancy in oilseed rape (Brassica napus L.) with exogenous compounds

et al. 2019

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Population structure of Annona coriacea Mart. (Annonaceae) in different Cerrado phytophysiognomies

et al. 2020

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Knowing the regeneration and structure of a species in different phytophysiognomies is extremely important to understand its pattern of occurrence. In spite of its importance, this type of study is still scarce in the Cerrado biome. In this perspective, this work aimed to compare the structure of the arboreal and regenerating strata of Annona coriacea in the cerrado sensu stricto and in the cerradão (savanna woodland). For that purpose, 13 plots of 400m² were installed in each physiognomy. All individuals of A. coriacea were sampled and had their diameter and height measured. The individuals were divided into regenerating and arboreal and were distributed in classes of height and diameter. Furthermore, the absolute density and the basal area of each extract were calculated in each physiognomy. The parameters were compared using the T-test. In total, 130 individuals of A. Coriacea were sampled, with 42 regenerating individuals in the cerrado sensu stricto and 49 in the cerradão. As for the arboreal individuals, 33 were sampled in the cerrado sensu stricto and 6 in the cerradão. All evaluated parameters revealed to be significantly different for the physiognomies. Based on these results, it is possible to affirm that A. coriacea did not present a distribution pattern in the two physiognomies, although it presents a better establishment success in the cerrado sensu stricto. In the cerradão, although the seeds can germinate, the seedlings fail to develop and reach the adult age.

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Propagation of Annonaceous plants

et al. 2019

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This review aims to present advances in studies on the propagation of the Annonaceae species, which includes species of economic importance such as: soursop, custard apple, atemoya and cherimoya. In sexual propagation, advances are mainly related to a better understanding of the stages of seed development, dormancy mechanisms, and germination. In asexual propagation, compatibility studies between grafts and rootstocks are presented, focusing on the expression of genes involved in tissue formation. The cutting method is also discussed, which is another option for the propagation for this group of plants considered difficult to root, approaching endogenous and exogenous factors related to the subject, as well as management strategies that affect the success of this technique.

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Effect of storage in overcoming seed dormancy of Annona coriacea Mart. seeds

Cited by 4 publications

References 15 publications

Overcoming seed dormancy in oilseed rape (Brassica napus L.) with exogenous compounds

Overcoming seed dormancy in oilseed rape (Brassica napus L.) with exogenous compounds

Population structure of Annona coriacea Mart. (Annonaceae) in different Cerrado phytophysiognomies

Propagation of Annonaceous plants

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