A Strategy for the Second Breeding Cycle of Larix x marschlinsii in Québec, Canada Including Experiments to Guide Interspecific Tree Breeding Programme

Perron, Martin

doi:10.1515/sg-2008-0043

Cited by 10 publications

(7 citation statements)

References 38 publications

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“…A test including crosses among three larch species was established in 1992 (BALTUNIS et al, 1998). Our breeding design closely resembled one recently proposed by PERRON (2008) in order to demonstrate hybrid vigor among full-sib families of hybrids between J and E parents (L. x marschlinsii Coaz) in Quebec. Perron proposed a complete diallel between 6 J and 6 E parents, which included reciprocal crosses between J and E parents.…”

Section: Introductionmentioning

confidence: 89%

“…and Japanese larch (L. kaempferi (Lamb) Carriere) exhibiting exceptional growth followed the introduction of Japanese larch into European arboretums in 1861 (SANDER and LAANELAID, 2007). Since then, there has been considerable interest in realizing the potential of larch hybrids in France, Sweden, Quebec, the People's Republic of China and throughout US as a rapidly growing plantation species (PÂQUES, 1989;PERRON, 2008;ECO et al, 2004). Over the last 30 years, plantations of an open-pollinated half-sib E ϫ J family from a German seed orchard (LANGNER and SCHNECK, 1998) have been established in Maine, Nova Scotia, the Lake States and the state of Oregon.…”

Section: Introductionmentioning

confidence: 99%

“…In the Lake States about 100,000 trees per year of the hybrid are being planted, in Nova Scotia about 125 acres per year, and its resistance to the Swiss Needle Cast fungus makes it a desirable replacement for Douglas fir on susceptible sites in Oregon 4) . In Quebec there has been increased demand for the hybrid and a breeding program to produce further genetic improvement is underway (PERRON, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Near rotation-length performance of selected hybrid larch in Central Maine, U.S.A

Greenwood

Roth

Maass³

et al. 2015

Silvae Genetica

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Twenty-two year measurements of a test of inter- and intraspecific larch hybrids among European (E), Japanese (J) and tamarack (T) parents growing in central Maine reveal significant hybrid vigor, especially among crosses involving J and E parents. The mean heights and diameters of all the interspecific crosses between J and E parents exceeded those of intraspecific crosses among either of the parents. The mean height after 22 years for all 17 JxE and ExJ crosses was 19.2 m (63 feet), which compares favorably with heights of loblolly pine plantations at age 25 growing in the southeastern USA, where site index ranged from 12.2 m to 24.4 m (40 and 80 feet respectively). In addition the mean height of these larch crosses was 30% greater than that of a control hybrid seed lot of German origin. Crosses between E and T parents also performed well, but exhibited relatively poor form, and seed set was very low. Seed set and viability for crosses between J and E were as good as intraspecific parental crosses. Therefore propagation of hybrid larch crosses via controlled pollination and rooted cuttings is feasible, and the potential benefits of larch plantations for Maine’s forest economy are briefly discussed.

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Near rotation-length performance of selected hybrid larch in Central Maine, U.S.A

Greenwood

Roth

Maass³

et al. 2015

Silvae Genetica

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“…To improve drought tolerance, plant breeders often use hybridization to improve vigor and heterosis. These characteristics are commonly recognized as the superiority of hybrids relative to parental performance (Perron, 2008). To date, one of the most studied species is maize (Zea mays), which had been successfully exploited to enhance drought tolerance by creation of hybrids (Lopes et al, 2011).…”

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confidence: 99%

Physiological Acclimation of Taxodium Hybrid ‘Zhongshanshan 118’ Plants to Short-term Drought Stress and Recovery

Shi

Yin

Wang

et al. 2016

horts

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The physiological acclimation of Taxodium hybrid ‘zhongshanshan 118’ (T.118) plants to a progressive drought stress and drought-stressed to recovery treatment (DS-R) was investigated in this study. Plants of control (C) treatment were watered daily throughout the experiment. Results indicated that water deficit reduced stomatal conductance (gS) to improve water use efficiency (WUE) and, as a consequence, net photosynthetic rate (Pn), transpiration rate (Tr), and intercellular CO2 concentration (Ci) were also decreased in DS-R T.118 plants compared with C plants. These reductions became more significant with decreasing soil water availability. Correlation analysis showed gS was positively correlated (P < 0.01) with the soil water content as well as leaf relative water content (RWC). There was a tendency to accumulate proline, malondialdehyde (MDA), antioxidases, and membrane electrolyte leakage as stress intensity increased. Moreover, drought stress induced significant (P < 0.05) decline in total chlorophyll contents (Chlt) and increase of nonphotochemical quenching (NPQ) on day 8 as a photo-protective mechanism. Cluster analysis distinguished the adaption of T.118 plants to water deficit in two ways. First, photosynthesis was related to thermal dissipation, and second antioxidation was related to morphology and osmosis. Furthermore, tested parameters showed a reversed tendency and restored equivalently to C levels after 9 days of rewatering. These findings suggest that T.118 plants demonstrated considerable tolerance to short-term drought stress and recovery due to a high degree of plasticity in physiological acclimation.

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“…As for other conifers, reproductive barriers between larch species are generally weak and hybrids are easily produced (Baltunis et al 1998;Acheré et al 2004;Colas et al 2008;Moriguchi et al 2008). Hybrid larches are widely used in forestry because of their faster growth, higher volume, and increased resistance to insects and diseases (Eko et al 2004;Perron 2008;Pâques 2009). Given the weak reproductive barriers, there is the possibility that populations of native larch found in eastern Canada, such as tamaracks (Larix laricina (Du Roi) K. Koch), hybridize spontaneously with exotic Eurasian species within plantations.…”

Section: Communicated By Y Tsumuramentioning

confidence: 99%

Rates of spontaneous hybridization and hybrid recruitment in co-existing exotic and native mature larch populations

Meirmans

Gros‐Louis

Lamothe

et al. 2014

Tree Genetics & Genomes

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Exotic larch (Larix decidua Mill., Larix kaempferi (Lamb.) Carr. and Larix sibirica Ledeb.) and their hybrids have been introduced into Canada to test adaptation and growth for reforestation purposes. For tree breeding operations, provenance trials and seed orchards of exotic larches and their hybrids have been established in arboreta adjacent to natural forest stands of the indigenous species Larix laricina (Du Roi) K. Koch. This proximity offers an opportunity to measure spontaneous hybridization and the recruitment of hybrids. Using a combination of two chloroplast and three mitochondrial DNA markers, we estimated the rate of spontaneous hybridization taking place between native (L. laricina) and exotic (L. decidua, L. kaempferi, L. sibirica) species of larch in two arboreta. More than 5,000 seeds and 1,000 recruits from the two experimental sites were sampled and genetically identified. The occurrence of spontaneous hybridization between L. laricina and the exotics was found both in seeds and from recruits freely established near the plantations. A low hybridization rate (3 % or less) was observed among the seeds of L. laricina maternal trees. Spontaneous native-exotic hybrids were also observed to establish and survive in the environment under the current climatic conditions at a similarly low rate. However, a much higher and variable rate of establishment was observed for recruits with exotic components (up to 34.6 % at one site). These results indicate that the spontaneous hybridization and the recruitment of hybrid and exotic recruits do occur and should be taken into consideration in the management and establishment of plantations of fast-growing species with exotic components.

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A Strategy for the Second Breeding Cycle of Larix x marschlinsii in Québec, Canada Including Experiments to Guide Interspecific Tree Breeding Programme

Cited by 10 publications

References 38 publications

Near rotation-length performance of selected hybrid larch in Central Maine, U.S.A

Near rotation-length performance of selected hybrid larch in Central Maine, U.S.A

Physiological Acclimation of Taxodium Hybrid ‘Zhongshanshan 118’ Plants to Short-term Drought Stress and Recovery

Rates of spontaneous hybridization and hybrid recruitment in co-existing exotic and native mature larch populations

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