Genotype and environment: two factors related to autumn cold hardiness on Persian walnut (Juglans regia L.)

Guàrdia, Mercè; Savè, Robert; Díaz, Raquel Vela; Vilanova, Antoni; Aletà, N.

doi:10.1007/s13595-013-0328-2

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…Consistent with our hypotheses, provenances of J. cinerea from colder areas (lower hardiness zones) exhibited greater cold tolerance than those from warmer areas when assessed by EL in current-year twigs. This result was similar to that reported for Persian walnut (Juglans regia L.), where individuals from colder provenances sustained less damage following cold treatments (Guàrdia et al 2013) and performed better on colder sites (Hemery et al 2005) than individuals from warmer provenances. Similar results have also been reported in other species, such as white ash (Fraxinus americana L.; Alexander et al 1984) and maritime pine (Pinus pinaster Aiton; Corcuera et al 2011).…”

Section: Cold Tolerancesupporting

confidence: 88%

Cold and heat tolerances of hybrids for restoration of the endangered Juglans cinerea L

Brennan

Uscola

Joly

et al. 2021

Annals of Forest Science

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Key message Hybrids had overall intermediate cold and heat tolerances compared to their progenitors, Juglans cinerea and Juglans ailantifolia. Differences in hybrids were small compared to J. cinerea though, indicating that when considering extreme temperature tolerances, hybrids might be usesd in some restoration circumstances. However, hybrids might exceed their cold tolerance in especially cold areas, such as J. cinerea's northern range limits.• Context Hybridization could incorporate traits for surviving detrimental global changes. Juglans cinerea, an endangered North American tree species, can hybridize with non-native Juglans ailantifolia Carr. Evidence indicates their hybrids could hold resistance to the fungal disease threatening J. cinerea. Consequently, the hybrids are being evaluated for restoration use, but to be effective, they must survive in J. cinerea's distribution. An ecophysiological evaluation could contribute to predicting potential hybrid utilization areas.• Aims To provide a relative comparison of the cold and heat tolerances among J. cinerea provenances and between J. cinerea, J. ailantifolia, and their hybrids.• Methods In the cold test, twigs were subjected to five freeze treatments and resulting damage was estimated using electrolyte leakage. In the heat test, leaflets were subjected to six hot water bath treatments and damage was estimated using chlorophyll fluorescence.• Results Within J. cinerea, trees from colder areas exhibited less cold damage than those from warmer areas. Differences in heat damage did not occur among hardiness zones. Juglans cinerea exhibited greatest cold tolerance, J. ailantifolia exhibited greatest heat tolerance, and hybrids were intermediate.• Conclusion Differences in the cold and heat tolerances of J. cinerea and its hybrids were overall minimal, although greater in cold tolerance.

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Section: Cold Tolerancesupporting

confidence: 88%

Cold and heat tolerances of hybrids for restoration of the endangered Juglans cinerea L

Brennan

Uscola

Joly

et al. 2021

Annals of Forest Science

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“…During the cold-acclimation of plants an accumulation of secondary metabolites, including TP was reported by Cansev et al (2012) and Pennycooke et al (2005). Our interesting results with P. aureosulcata f. aureocaulis in which TP values immediately rose after exposure to low temperatures in October, while the other taxa produced high values only later in November, could be explained by the different freeze tolerance of these species, P. aureosulcata being the most freeze tolerant of the four taxa (Ohrnberger, 2002), and also by possible inter/intraspecific differences in responsiveness to low temperature exposure during cold-acclimation as reported for other plants (Li et al, 2002;Li et al, 2005;Guárdia et al, 2013). Previous available studies on bamboos have not attempted to find reasons for seasonal changes in TP, only defined the period of the year optimal for harvest of bamboo leaves rich in TP.…”

Section: Discussionmentioning

confidence: 67%

Seasonal Variations in Total Antioxidant Capacity and Total Phenolics Content of Leaves of <i>Phyllostachys<i> Taxa Using Different Extraction Methods

Neményi

Stefanovitsné-Bányai

Burján

et al. 2014

Not Bot Hort Agrobot Cluj

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Changes in total phenolic content (TP) and total antioxidant capacity (AC) during the vegetation period (April-November) were analysed in Phyllostachys aureosulcata f. aureocaulis (PAA), P. flexuosa (PF), P. humilis (PH), P. sulphurea var. sulphurea (PSS). Different extraction methods were compared: infusion or decoction with water or aqueous methanol. The highest significant value for TP was measured in the case of infusion at 90 °C for 5 min, which lead to the highest value for AC. During the vegetation period the highest values of TP were measured in April and May in the case of PAA (409.5; 314.9 and 258.7; 119.0 µg GA/ml) and PH (388.4; 411.6 and 252.9; 253.3 µg GA/ml). There was a clear trend in the changes of TP, with high values in April and November and a peak during August-September. Similar to TP, the highest values of AC were measured in April and May in PH (519.7; 566.3 and 513.5; 510.4 µg AA/ml) and PAA (534.5; 337.8 and 394.9; 275.4 µg AA/ml). We compared the change of TP in all taxa with stress index values derived from daily maximum and minimum air temperature, cumulative precipitation plus irrigation and cumulative evapotranspiration values. A close correlation R 2 = 0.32 (p=0.001) was found between stress index values and the change in TP of all taxa. The correlation is even closer R 2 = 0.52 (p=0.001) with PF, PH and PSS. Our results with PAA can be explained by possible inter/intra-specific differences in freeze tolerance and cold-acclimation.

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“…During the dormancy period the trees may endure temperatures as low as minus 25 or 28 °C with little damage (Szentiványi 1978), but studies made by Fady et al (2003) indicated that early spring frosts may injure the apical buds, or in more severe cases, the ends of young shoots. A close correlation was detected between frost tolerance and origin (Guàrdia et al 2013). Although differences in the frost tolerance of species and cultivars can be attributed to genetically inherited traits, frost tolerance is not a static phenomenon, but exhibits constant changes.…”

Section: Introductionmentioning

confidence: 62%

“…It is difficult to compare the present results with earlier data, as those available were obtained at different locations for different cultivars. Based on the results obtained with various methods, however, it can be concluded that the frost tolerance of the overwintering organs constantly changes and that both genotypic and environmental factors play a role in hardening and dehardening processes, resulting in considerable differences between the cultivars (Aslamarz et al 2010a;Aslamarz et al 2010b;Charrier et al 2013;Guàrdia et al 2013;Charrier et al 2018). The data recorded by Aslamarz et al (2010a) in plantations in the neighborhood of Teheran showed 'Pedro' to be the most frost-tolerant of the cultivars, indicating that, under diverse climatic conditions, the same cultivar may give quite different results.…”

Section: Frost Tolerance Of Hungarian-bred Walnut Cultivarsmentioning

confidence: 99%

Evaluation of the frost tolerance of Hungarian-bred walnut cultivars

Szügyi-Bartha,

Bujdosó,

Froemel-Hajnal

et al. 2022

Acta Biol Szeged

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At present very few walnut cultivars can be said to be cosmopolitan cultivars, grown widely in the walnut-producing countries of the world. Walnut (Juglans regia L.) has poor ecological adaptability, as its cultivation is greatly influenced by low temperatures during the winter dormancy period and in early spring. The breeding activities conducted in various countries are therefore of great significance. Choosing suitable locations for cultivation is of key importance if optimum yield stability is to be achieved. The introduction of foreign walnut cultivars regularly runs into problems if, despite their high yielding ability, they are unable to adapt to the Hungarian climate. In Hungary the most critical weather events for walnuts are the frequent frosts in early spring. Buds therefore need to burst late to avoid damage to the flowers. Many papers have dealt with the frost tolerance of stone fruit, but only limited information has been published on the frost tolerance of walnut. For the first time in Hungary, artificial freezing tests were performed in the present work to determine the frost tolerance of the cultivars available in Hungary. The results could be of service to Hungarian growers in choosing the most suitable cultivar.

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Genotype and environment: two factors related to autumn cold hardiness on Persian walnut (Juglans regia L.)

Cited by 7 publications

References 35 publications

Cold and heat tolerances of hybrids for restoration of the endangered Juglans cinerea L

Cold and heat tolerances of hybrids for restoration of the endangered Juglans cinerea L

Seasonal Variations in Total Antioxidant Capacity and Total Phenolics Content of Leaves of <i>Phyllostachys<i> Taxa Using Different Extraction Methods

Evaluation of the frost tolerance of Hungarian-bred walnut cultivars

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