Genetic determinism of anatomical and hydraulic traits within an apple progeny

Lauri, Pierre‐Éric; Gorza, Olivier; Cochard, Hervé; Martinez, Sébastien; Celton, Jean‐Marc; Ripetti, V.; Lartaud, Marc; Bry, Xavier; Trottier, Catherine; Costes, Evelyne

doi:10.1111/j.1365-3040.2011.02328.x

Cited by 40 publications

(23 citation statements)

References 88 publications

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“…This finding is consistent with the results of two recent surveys of cavitation resistance conducted on a Pinus species (Corcuera et al 2011, Lamy et al 2011. This finding is also Genotypic variability and phenotypic plasticity of cavitation 1179 consistent with the large genotypic variability found in apple progeny derived from the crossing of two varieties (Lauri et al 2011). By contrast, the genotypic variability between beech populations was remarkably small.…”

Section: Genotypic Variability Of Vulnerability To Cavitationsupporting

confidence: 91%

Genotypic variability and phenotypic plasticity of cavitation resistance in Fagus sylvatica L. across Europe

Wortemann¹,

Herbette²,

Barigah³

et al. 2011

Tree Physiology

165

144

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Xylem cavitation resistance is a key physiological trait correlated with species tolerance to extreme drought stresses. Little is known about the genetic variability and phenotypic plasticity of this trait in natural tree populations. Here we measured the cavitation resistance of 17 Fagus sylvatica populations representative of the full range of the species in Europe. The trees were grown in three field trials under contrasting climatic conditions. Our findings suggest that the genotypic variability of cavitation resistance is high between genotypes of a given population. By contrast, no significant differences were found for this trait across populations, the mean population cavitation resistance being remarkably constant in each trial. We found a significant site effect and a significant site × population interaction, suggesting that cavitation resistance has a high phenotypic plasticity and that this plasticity is under genetic control. The implications of our findings for beech forest management in a context of climate change are discussed.

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Section: Genotypic Variability Of Vulnerability To Cavitationsupporting

confidence: 91%

Genotypic variability and phenotypic plasticity of cavitation resistance in Fagus sylvatica L. across Europe

Wortemann¹,

Herbette²,

Barigah³

et al. 2011

Tree Physiology

165

144

View full text Add to dashboard Cite

show abstract

“…; Lauri et al . ; Christensen‐Dalsgaard & Tyree ). Poplars and willows are both water‐demanding and drought‐sensitive genera (Cochard et al .…”

Section: Introductionmentioning

confidence: 99%

Frost fatigue and spring recovery of xylem vessels in three diffuse‐porous trees in situ

Christensen-Dalsgaard

Tyree

2013

Plant Cell & Environment

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Frost has been shown to cause frost fatigue (reduced cavitation resistance) in branch segments in the lab.Here, we studied the change in cavitation resistance and percent loss of conductivity (PLC) from fall to spring over 2 consecutive years in three diffuse-porous species in situ. We used the cavitron technique to measure P25, P50 and P90 (the xylem pressure causing a 25, 50 and 90% conductivity loss) and PLC and stained functioning vessels.Cavitation resistance was reduced by 64-87% (in terms of P50), depending on the species and year. P25 was impacted the most and P90 the least, changing the vulnerability curves from s-to r-shaped over the winter in all three species. The branches suffered an almost complete loss of conductivity, but frost fatigue did not necessarily occur concurrently with increases in PLC. In two species, there was a trade-off between conduit size and vulnerability.Spring recovery occurred by growth of new vessels, and in two species by partial refilling of embolized conduits. Although newly grown and functioning conduits appeared more vulnerable to cavitation than year-old vessels, cavitation resistance generally improved in spring, suggesting other mechanisms for partial frost fatigue repair.

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“…Also, a QTL on LG8 was found for BBI at both tree and axis scales in Durand et al (2013) and for BBI, yield and number of flowers per inflorescence in Guitton et al (2012). This zone, located at 8–23 cM on LG8, partially overlapped with QTLs detected in SG family for a descriptor of tree vegetation density (Virlet et al, 2015), for traits linked to bud break (Celton et al, 2011; Allard et al, 2016), and traits involved in gas exchange and xylem conductance (Segura et al, 2008; Regnard et al, 2009; Lauri et al, 2011). The QTL on LG10 located between 55 and 78 cM for BBIs, γ ax , θ g ,00 and θ g ,01 co-localized with those detected for BBI, precocity and number of seeds per inflorescence in SG (Guitton et al, 2012) and for the percentage of bourses with one fruit on short axes in XB family (Celton et al, 2014).…”

Section: Discussionmentioning

confidence: 83%

Predicting Flowering Behavior and Exploring Its Genetic Determinism in an Apple Multi-family Population Based on Statistical Indices and Simplified Phenotyping

et al. 2017

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Irregular flowering over years is commonly observed in fruit trees. The early prediction of tree behavior is highly desirable in breeding programmes. This study aims at performing such predictions, combining simplified phenotyping and statistics methods. Sequences of vegetative vs. floral annual shoots (AS) were observed along axes in trees belonging to five apple related full-sib families. Sequences were analyzed using Markovian and linear mixed models including year and site effects. Indices of flowering irregularity, periodicity and synchronicity were estimated, at tree and axis scales. They were used to predict tree behavior and detect QTL with a Bayesian pedigree-based analysis, using an integrated genetic map containing 6,849 SNPs. The combination of a Biennial Bearing Index (BBI) with an autoregressive coefficient (γg) efficiently predicted and classified the genotype behaviors, despite few misclassifications. Four QTLs common to BBIs and γg and one for synchronicity were highlighted and revealed the complex genetic architecture of the traits. Irregularity resulted from high AS synchronism, whereas regularity resulted from either asynchronous locally alternating or continual regular AS flowering. A relevant and time-saving method, based on a posteriori sampling of axes and statistical indices is proposed, which is efficient to evaluate the tree breeding values for flowering regularity and could be transferred to other species.

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Genetic determinism of anatomical and hydraulic traits within an apple progeny

Cited by 40 publications

References 88 publications

Genotypic variability and phenotypic plasticity of cavitation resistance in Fagus sylvatica L. across Europe

Genotypic variability and phenotypic plasticity of cavitation resistance in Fagus sylvatica L. across Europe

Frost fatigue and spring recovery of xylem vessels in three diffuse‐porous trees in situ

Predicting Flowering Behavior and Exploring Its Genetic Determinism in an Apple Multi-family Population Based on Statistical Indices and Simplified Phenotyping

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