Pistil abortion is related to ovary mass in olive (Olea europaea L.)

Rosati, A.; Caporali, Silvia; Paoletti, Andrea; Famiani, Franco

doi:10.1016/j.scienta.2010.12.002

Cited by 41 publications

(22 citation statements)

References 31 publications

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“…In olive, a frequent cause of pistil abortion producing imperfect (staminate) flowers is competition among flowers for resources, which are insufficient when flowering is high (Perica et al, 2001;Levin and Lavee, 2005) or ovaries are larger (Rosati et al, 2011). Similarly, here we found that assimilate limitation by reduced irradiance affected the number of perfect flowers more than the flower number.…”

Section: Inflorescence Flower and Ovary Characteristicssupporting

confidence: 63%

Olive inflorescence and flower development as affected by irradiance received in different positions of an east-west hedgerow

Moreno-Alías¹,

Trentacoste²,

Gómez-del-Campo³

et al. 2018

Acta Hortic.

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Olive tree productivity is highly responsive to radiation conditions, so understanding the responses of the developmental processes that determine yield, including inflorescence and flower differentiation, is essential for orchard design and management. This is particularly true in the new intensive hedgerow orchards, where radiation reception highly depends on canopy height and row orientation and spacing. In an east-west-oriented olive 'Arbequina' hedgerow located in Toledo (Spain), inflorescences were sampled from both sides (south and north) of the hedgerow canopy, at heights of 0-0.4, 0.8-1.2 and 1.6-2.0 m above the soil. Floral quality was determined at different levels of morphogenetic organization: inflorescence, flower, and ovary. Daily irradiance intercepted during 1 month before flowering by each canopy position was estimated using a model. The more highly illuminated south side received 31% more irradiance overall than the north side. Upper-layer irradiance was greater than the bottom layer, 4.0 and 1.5 times for the north and south sides, respectively. Inflorescence flower number and perfect flower proportion were similar at different heights on the south side. In contrast, north-side upper-layer inflorescences had more total flowers and perfect flowers than at lower hedgerow heights. At each height, perfect flower proportion was higher on the south than north side, while the remaining traits were similar between sides. Ovary tissue size, observed in histological preparations, did not vary among heights on each side, but was higher on the south than north side due to endocarp size. Simulated irradiance at flowering explained 90% of the observed variation of perfect flower number per inflorescence. Overall, the results emphasize the importance of irradiance at different hedgerow sides and heights on olive floral structures.

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Section: Inflorescence Flower and Ovary Characteristicssupporting

confidence: 63%

Olive inflorescence and flower development as affected by irradiance received in different positions of an east-west hedgerow

Moreno-Alías¹,

Trentacoste²,

Gómez-del-Campo³

et al. 2018

Acta Hortic.

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“…For instance, Wetzstein et al (2011) observed different types of arrested development of pistil in aborted Punica granatum flowers, one of which exhibited gaps between the inner and outer integuments. Rosati et al (2011) found that the abnormity of integument formation breaks the negotiation between the integument and embryo sac, resulting in pistil abortion. In the present study, the organelles were not identified from day 6 after treatment, implying the occurrence of PCD of the nucellar cell.…”

Section: Gender Differentiation Modelmentioning

confidence: 99%

Cytological Study of Gender Conversion in Amur Grape

Shen¹,

Liu²,

Ke³

et al. 2018

J. Amer. Soc. Hort. Sci.

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Amur grape (Vitis amurensis) is a dioecious species. To elucidate the time of and reason for pistil abortion in male amur grape from the perspective of cytology, we observed the sections of pistil of a male line during its development using optical and transmission electron microscopes. The abnormity in the morphology of nucellar cell and the development of various organelles appeared before the abnormity of functional megaspore mitosis. Programmed cell death (PCD) of the nucellar cells might be an important reason for mitosis disorder, leading to the abortion of pistil in male flower. However, the abortion can be eliminated by forchlorfenuron treatment, resulting in the recovery of functional pistil in male amur grape. This study provides cytological information on the gender conversion mechanism in male amur grape, which can promote gender determination studies in Vitis species.

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“…Imperfect flowers do not produce fruit. The proportion of imperfect flowers is cultivar-dependent (Rallo and Fernández-Escobar, 1985;Rosati et al, 2011) and it is affected by water availability and nutritional status (Uriu, 1960). Perfect flowers contain four ovules, two in each of two locules and are short-living.…”

Section: Floweringmentioning

confidence: 99%

Understanding olive adaptation to abiotic stresses as a tool to increase crop performance

Fernández

2014

Environmental and Experimental Botany

167

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1. Introduction 2. The olive biennial cycle 2.1. Shoot growth 2.2. Flowering 2.3. Fruit development 3. Morphological adaptations to abiotic stresses 3.1. The root system 3.2. The stem 3.3. The leaf 4. Physiological adaptations to abiotic stresses 4.1. Water uptake from drying soils 4.1.1. Osmotic adjustment and elastic module 4.1.2. Hydraulic redistribution 4.2. Vulnerability to embolism 4.3. Stomatal control of gas exchange 4.3.1. Response of the stomata to soil water and atmospheric demand 4.3.2. Stomatal conductance, plant water status and transpiration 4.3.3. Root-to-shoot signalling 4.3.4. Leaf hydraulics 4.4. Leaf photosynthesis 4.4.1. Diffusional limitations of photosynthesis 4.4.2. Non-diffusional limitations of photosynthesis 4.4.3. WUE and water productivity 4.5. Response to re-watering 5. Improving crop performance and management 5.1. Modelling 5.2. Development and production as influenced by orchard conditions 5.

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Pistil abortion is related to ovary mass in olive (Olea europaea L.)

Cited by 41 publications

References 31 publications

Olive inflorescence and flower development as affected by irradiance received in different positions of an east-west hedgerow

Olive inflorescence and flower development as affected by irradiance received in different positions of an east-west hedgerow

Cytological Study of Gender Conversion in Amur Grape

Understanding olive adaptation to abiotic stresses as a tool to increase crop performance

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