Deciphering morpho-agronomic determinants of the juvenile-mature phase change in apple progenies

Atay, Ayşe

doi:10.1016/j.scienta.2019.108847

Cited by 2 publications

(3 citation statements)

References 27 publications

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“…In conclusion, the multifaceted evaluation that was conducted provides a first depiction of the sustainable exploitation potential of Greek native Cornus mas genotypes. All genotypes collected from the wild are under ex situ conservation at the IPB and GR for future monitoring, since juvenile–mature correlations are known in perennial crops from the literature [ 68 , 69 ]; such aspects should be taken into account for future long-term breeding programs. The transition from the juvenile to the mature (producing) stage followed by several phenological and developmental changes was found to vary among genotypes mainly in forest species but also in cultivated deciduous tree species with stone fruits such as apples [ 69 ].…”

Section: Discussionmentioning

confidence: 99%

“…All genotypes collected from the wild are under ex situ conservation at the IPB and GR for future monitoring, since juvenile–mature correlations are known in perennial crops from the literature [ 68 , 69 ]; such aspects should be taken into account for future long-term breeding programs. The transition from the juvenile to the mature (producing) stage followed by several phenological and developmental changes was found to vary among genotypes mainly in forest species but also in cultivated deciduous tree species with stone fruits such as apples [ 69 ]. Consequently, further work on molecular authentication, ecological profiling, and phytochemical profiling is proposed coupled with further research on propagation.…”

Section: Discussionmentioning

confidence: 99%

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Documenting Greek Indigenous Germplasm of Cornelian Cherry (Cornus mas L.) for Sustainable Utilization: Molecular Authentication, Asexual Propagation, and Phytochemical Evaluation

Karapatzak¹,

Krigas²,

Ganopoulos³

et al. 2022

Plants

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Wild-growing Cornelian cherries (Cornus mas L., Cornaceae) are well-known native fruits in Greece since ancient times that are still consumed locally nowadays. Modern research has highlighted the value of Cornelian cherries as functional food with exceptional health benefits on account of the fruits’ biochemical profile. However, apart from local consumption directly from wild growing individuals, Greek native C. mas populations have not yet been investigated or sustainably utilized. A multifaceted evaluation was conducted herein including authorized collection-documentation, taxonomic identification, and molecular authentication (DNA barcoding), asexual propagation via cuttings and phytochemical evaluation (multiple antioxidant profiling) of neglected and underutilized Greek native C. mas germplasm sources. Successive botanical expeditions resulted in the collection of 18 samples of genotypes from distant C. mas populations across different natural habitats in Greece, most of which were DNA fingerprinted for the first time. Asexual propagation trials revealed high variability in rooting frequencies among Greek genotypes with low (<25%), average (25–50%), and adequate propagation potential (>50%) using external indole-3-butyric acid (IBA) hormone application on soft- or hard-wood cuttings. The comparative phytochemical evaluation of the studied Greek genotypes showed significant potential in terms of antioxidant activity (>80% radical scavenging activity in 13 genotypes), but with variable phenolic content (47.58–355.46 mg GAE/100 g), flavonoid content (0.15–0.86 mg CE/100 g), and vitamin C content (1–59 mg AAE/100 g). The collected material is currently maintained under ex situ conservation for long-term monitoring coupled with ongoing pilot cultivation trials. The pivotal data create for the first time a framework for the sustainable utilization of Greek native C. mas germplasm as a superfood with significant agronomic potential.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Documenting Greek Indigenous Germplasm of Cornelian Cherry (Cornus mas L.) for Sustainable Utilization: Molecular Authentication, Asexual Propagation, and Phytochemical Evaluation

Karapatzak¹,

Krigas²,

Ganopoulos³

et al. 2022

Plants

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“…The phase change period is when a plant transitions from the juvenile to mature phase. Plants at the juvenile stage do not possess the ability to flower [ 1 ]. In the phase change period, plants transition from a juvenile to mature state and from nutritional to reproductive growth, undergoing a series of morphological and physicochemical changes [ 2 , 3 ] before acquiring the ability to flower, undergo bud differentiation, flower, and fruit [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Ring Stripping, Ring Cutting, and Growth Regulators Promote Phase Change and Early Flowering in Pear Seedlings

Zhang

Wang

et al. 2023

Plants

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Hybrid breeding is the most important means of selecting pear (Pyrus) varieties, but a long juvenile period severely restricts the selection of new varieties. In this study, we used ‘Yuluxiang’ × ‘Akituki’ 4-year-old seedling trees to study the effects of plant growth regulators, ring stripping, and ring cutting on the promotion of phase change and flowering to assist in shortening the breeding cycle. A single application of 100 mg/kg 6-BA + 1000 mg/kg PP333 was most effective in promoting phase change and flowering. This treatment effectively inhibited the growth and thickening of annual shoots, significantly increased soluble sugar and protein contents in buds, increased the ABA content by 45.41%, decreased the IAA content by 7.35%, increased the expression of the flower-promoting genes FT and LFY by 2273.41% and 1153.71%, respectively, and decreased the expression of the flower-suppressing gene TFL1 by 74.92%. The flowering plant rate increased by 23.34% compared to the control. Both ring stripping and ring cutting were effective in promoting phase change and flowering, significantly increasing the flowering rate, inflorescence number, and the number of flowering plants. For improving the flowering rate, the ring-stripping treatment had the strongest effect and effectively inhibited the growth and thickening of annual shoots, while also significantly increasing the soluble sugar and protein contents in buds, reducing the contents of IAA and GA3 by 8.73% and 50.12%, respectively, increasing the expression of FT and LFY by 80.01% and 821.14%, respectively, and reducing the expression of the flower-suppressing gene TFL1 by 59.22%. In conclusion, ring stripping, ring cutting, and spraying of 100 mg/kg 6-BA + 1000 mg/kg PP333 were effective in promoting phase change and early flowering in seedling trees.

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Deciphering morpho-agronomic determinants of the juvenile-mature phase change in apple progenies

Cited by 2 publications

References 27 publications

Documenting Greek Indigenous Germplasm of Cornelian Cherry (Cornus mas L.) for Sustainable Utilization: Molecular Authentication, Asexual Propagation, and Phytochemical Evaluation

Documenting Greek Indigenous Germplasm of Cornelian Cherry (Cornus mas L.) for Sustainable Utilization: Molecular Authentication, Asexual Propagation, and Phytochemical Evaluation

Ring Stripping, Ring Cutting, and Growth Regulators Promote Phase Change and Early Flowering in Pear Seedlings

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