Seasonal patterns of vegetative growth and competition with reproductive sinks in peach (<i>Prunus persica</i>)

Berman, M. E.; DeJong, Theodore M.

doi:10.1080/14620316.2003.11511622

Cited by 70 publications

(37 citation statements)

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“…3) was probably due to increased competition for photoassimilates among fruit themselves and, also, between the fruit and other organs that were developing at the same time (Grossman & DeJong, 1994). High cropping peach trees generally have reduced vegetative growth (Berman & DeJong, 2003) and root growth (Chalmers & Van den Ende, 1975). Results in support of this were found in experiments with late-maturing peach trees in both potted (López et al, 2008) and field grown (Ben Mimoun & DeJong, 2006) conditions, in which root growth was significantly higher in defruited than in commercial crop load treatments.…”

Section: Crop Load and Peach Tree Growthsupporting

confidence: 75%

Root and aerial growth in early-maturing peach trees under two crop load treatments

Abrisqueta

Conejero

López-Martínez

et al. 2017

Span. j. agric. res.

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The objectives of the paper were to study the pattern of root growth (measured by minirhizotrons) in relation to trunk, fruit and shoot growth and the effects of crop load on tree growth and yield in peach trees. Two crop load (commercial and low) treatments were applied in a mature early-maturing peach tree orchard growing in Mediterranean conditions. Root growth dynamics were measured using minirhizotrons during one growing season. Shoot, trunk and fruit growth were also measured. At harvest, all fruits were weighed, counted and sized. Roots grew throughout the year but at lower rates during the active fruit growth phase. Root growth was asynchronous with shoot growth, while root and trunk growth rates were highest after harvest, when the canopy was big enough to allocate the photo-assimilates to organs that would ensure the following season's yield. Shoot and fruit growth was greater in the low crop load treatment and was accompanied by a non-significant increase in root growth. High level of fruit thinning decreased the current yield but the fruits were more marketable because of their greater size.Additional keywords: fruit growth; minirhizotrons; phenology; Prunus persica L. Batsch; root length density; vegetative growth

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Section: Crop Load and Peach Tree Growthsupporting

confidence: 75%

Root and aerial growth in early-maturing peach trees under two crop load treatments

Abrisqueta

Conejero

López-Martínez

et al. 2017

Span. j. agric. res.

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“…The results of agronomic scenarios indicate that, as reported under field conditions by many authors (Berman and DeJong 2003;Marsal et al 2003;Nicolás et al 2006), fruit load exerted a strong influence on the final fruit average dry mass and yield simulated by our model. Other logical results were also obtained, such as the positive effects of thinning on fruit quality and the negative effects of pest attacks on fruit yield and quality, especially when attacks were severe or not treated.…”

Section: Discussionmentioning

confidence: 52%

“…One interesting result was the lack of an effect of the initial relative growth rate of fruits on fine roots, although several authors had noted a possible competition between fruits and roots (Miller and Walsh 1988;Berman and DeJong 2003;Abrisqueta et al 2008). Only the parameter SReq (shoot:root ratio at equilibrium) exerted a strong influence on fine roots.…”

Section: Discussionmentioning

confidence: 93%

QualiTree, a virtual fruit tree to study the management of fruit quality. II. Parameterisation for peach, analysis of growth-related processes and agronomic scenarios

Mirás-Avalos

Egea

Nicolás

et al. 2011

Trees

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In this paper, QualiTree, a fruit tree model designed to study the management of fruit quality, and developed and described in a companion paper (Lescourret et al. in Trees Struct Funct, 2010), was combined with a simple light-interception sub-model, and then parameterised and tested on peach in different situations. Simulation outputs displayed fairly good agreement with the observed data concerning mean fruit and vegetative growth. The variability over time of fruit and vegetative growth was well predicted. QualiTree was able to reproduce the observed response of trees to heterogeneous thinning treatments in terms of fruit growth. A sensitivity analysis showed that the average seasonal growth rates of the different organs were sensitive to changes to the values of their respective initial relative growth rates and that stem wood was the tree organ the most affected by a change in the initial relative growth rates of other organs. QualiTree was able to react to simulated scenarios that combined thinning and pest attacks. As expected, thinning intensity and the percentage damage caused by pests significantly affected fruit yield and quality traits at harvest. These simulations showed that QualiTree could be a useful tool to design innovative horticultural practices.

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“…It was found that non-structural carbohydrates (sugars and starch) were not influenced by elevated [CO 2 ] in stems and lateral roots. On the other hand, carbon partitioning in stems appears to be essentially influenced by sink demands from secondary radial growth (Berman and Dejong 2003). Wood forms not only the major supporting tissue of all the spermatophytes (Höll 2000), as secondary plant tissue produced by the vascular cambium, it also acts as a consistent sink for products transferred from the sources in the leaves.…”

Section: Introductionmentioning

confidence: 99%

Elevated CO2 concentration and temperature effects on the partitioning of chemical components along juvenile Scots pine stems (Pinus sylvestris L.)

Overdieck

Fenselau

2009

Trees

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The effects of doubled ambient [CO 2 ] and different temperature levels on young Pinus sylvestris growing in phytotron chambers were studied. Five chambers were supplied with *380 ('ambient air') and five with *700 lmol mol -1 CO 2 ('elevated [CO 2 ]'). Temperature levels in the chambers ranged in increment steps of 2°C from -4°C to ?4°C relative to the long-term monthly (day and night) average air temperature levels in Berlin-Dahlem. Substrate was medium fertile; soil moisture and air humidity were kept constant. After three vegetation periods twigs and stems were harvested, weighed, homogenized, and analyzed chemically. There was no significant temperature effect on wood mass accumulation, clearest positive [CO 2 ] effect occurred in the youngest twigs. In total, wood mass increased by 28.5% at doubled ambient [CO 2 ]. N-contents (percentage) decreased at elevated [CO 2 ] in the uppermost stem sections and not in twig wood causing wider C/N ratios in total. In response to elevated temperature, N-contents decreased slightly in twigs (*0.3%). Traces of free glucose, fructose and sucrose, which decreased from the top to the bottom, were found in stem wood, in contrast to traces of starch that increased from the top to the bottom. In response to elevated [CO 2 ] only a little more (0.05%) was accumulated in the top shoot and in tendency; glucose, fructose, and sucrose contents were lower at the bottom of stems as compared to the control. There was no obvious response of these non-structural carbohydrates to elevated temperature except for starch that decreased to half of the content from the lowest to the highest temperature level. Among the hemicellulose compounds, rhamnose and arabinose declined from the top shoot to the bottom of stem, whereas 4-O-methyl-D-glucuronicacid, mannose, and xylose increased. Contents (percentage) of galactose remained approximately stable along the stem. The clearest positive effect of elevated [CO 2 ] along the whole stem was found for mannose with differences of 0.6-0.3%. In contrast to rhamnose and arabinose that showed a negative response to elevated [CO 2 ], mannose was reduced towards the uppermost stem sections. The 4-O-methyl-Dglucuronic-acid was slightly lowered at the bottom, and galactose and xylose showed no [CO 2 ] response. The only hemicellulose compound which reacted to temperature elevation was galactose. It increased slightly (*0.1% per 1°C). Cellulose and lignin (Klason) behaved oppositely: cellulose increased and lignin decreased from the top to the bottom. These structural components behaved reversely also in response to elevated [CO 2 ]. In stem parts above the bottom section, cellulose content was slightly higher at elevated [CO 2 ], and lignin content was slightly lower at the bottom. Lignin reacted to temperature elevation by a very slight increase on the average (*0.1% per one 1°C). Cellulose, however, decreased by *0.2% per 1°C temperature elevation. The importance of persistent sinks of carbon in woody plant parts is discussed in respect to the greenhous...

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Seasonal patterns of vegetative growth and competition with reproductive sinks in peach (Prunus persica)

Cited by 70 publications

References 0 publications

Root and aerial growth in early-maturing peach trees under two crop load treatments

Root and aerial growth in early-maturing peach trees under two crop load treatments

QualiTree, a virtual fruit tree to study the management of fruit quality. II. Parameterisation for peach, analysis of growth-related processes and agronomic scenarios

Elevated CO2 concentration and temperature effects on the partitioning of chemical components along juvenile Scots pine stems (Pinus sylvestris L.)

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