Genetic variation in rooting ability of loblolly pine cuttings: effects of auxin and family on rooting by hypocotyl cuttings

Greenwood, Michael S.; Weir, Robert J.

doi:10.1093/treephys/15.1.41

Cited by 54 publications

(24 citation statements)

References 13 publications

(16 reference statements)

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“…Previous researches of rooting ability of cuttings in conifer and other plants revealed that rooting ability of cuttings were affected by auxin and its family members (Greenwood and Weir, 1994;Syros et al, 2004;Wiesman et al, 1989). The ability of auxins to stimulate adventitious root formation is well documented (Hartmann and Kester, 1983;Sircar Chatterjee, 1973).…”

Section: Discussionmentioning

confidence: 99%

Isolation and characterization of an Aux/IAA gene (LaIAA2) from Larix

Feng¹,

Liu²,

Sun³

et al. 2012

Afr. J. Biotechnol.

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Section: Discussionmentioning

confidence: 99%

Isolation and characterization of an Aux/IAA gene (LaIAA2) from Larix

Feng¹,

Liu²,

Sun³

et al. 2012

Afr. J. Biotechnol.

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“…Studies with hypocotyl cuttings have been developed in conifers (Greenwood and Weir 1994), and could be a useful approach in order to avoid the effect of age, using progenies as cutting donors. More research is necessary to study also the influence of the environmental factors on the rooting process and to adjust practical methodologies.…”

Section: Discussionmentioning

confidence: 99%

“…provenance, family, individual) is largely relevant in determining the rooting behavior within a species (Ying and Bagley 1977, Greenwood and Weir 1994, Dick et al 1996, Stankova and Panetsos 1997, Shoemake et al 2004. As an example, individual differences in the rooting capacity of Cupressus sempervirens L. ranged from 7 to 81% for one same set of experimental conditions (Stankova and Panetsos 1997).…”

Section: Introductionmentioning

confidence: 99%

Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America

et al. 2009

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SUMMARYIncreasing risks of loosing forest genetic resources and the need for a sustainable quality wood supply make focusing research efforts on undomesticated tree species necessary. The study of their genetic variation in vegetative propagation ability and the development of practical methodologies to obtain genetic copies are essential tools for conservation and breeding programs. patagonian cypress Austrocedrus chilensis is a vulnerable conifer native to the subantarctic forest of South America, with high ecological importance and economical potential. Its genetic diversity, mostly sheltered within unprotected populations, is seriously threatened. This work examined the ability of different genotypes of A. chilensis from xeric, mesic and humid populations to propagate asexually by stem rooting and scion grafting. The influence of exogenous auxins, season of cutting collection, ontogenetic stage of the donor plants, grafting season, and type of scions, was analyzed. Stem rooting ability was found to be poor both for adult (average = 0.27%) and juvenile ortets (average = 2.10%). Only one treatment, a juvenile progeny from a xeric provenance, showed remarkable results with 33.33% of rooting capacity. Grafting showed good results in early spring experiment using vigorous semi-hardwood scions, with an average of 80.95% of successful grafts. Compatibility between genotypes from different provenances used as scion and rootstock was found to be wide. These results indicate that although A. chilensis is a difficult-to-root species, its vegetative propagation by means of scion grafting is feasible using low cost technology.Key words: Austrocedrus, Cupressaceae, stem rooting, scion grafting. RESUMENLos crecientes riesgos de pérdida de recursos genéticos forestales y la necesidad de una producción sostenible de madera de calidad hacen necesario orientar la investigación hacia especies arbóreas nativas no domesticadas. Para rescatar la diversidad genética amenazada y como una importante herramienta para el mejoramiento genético, resulta necesario estudiar la capacidad de las especies para propagarse vegetativamente, así como desarrollar técnicas para obtener copias genéticas. El ciprés de la cordillera (Austrocedrus chilensis) es una conífera vulnerable del bosque subantártico de Sudamérica, de gran importancia ecológica y potencial económico. Su diversidad genética se encuentra seriamente amenazada. En este trabajo se examinó la capacidad de diferentes genotipos de poblaciones xéricas, mésicas y húmedas de A. chilensis, para propagarse asexualmente por enraizado de estacas y por injertos. Se analizó además la influencia de auxinas exógenas, de la estación de colecta, del estadio ontogénico de las plantas donantes, de la estación de injerto y del tipo de púa. La capacidad de enraizado fue muy pobre, tanto para ortets adultos (promedio = 0,27%) como para juveniles (promedio = 2,10%). Sólo una progenie juvenil de procedencia xérica mostró resultados remarcables, con 33% de enraizado. Los injertos mostraron buenos resultado...

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“…Propagation of the genus Pinus by rooting cuttings obtained from young buds is carried out to multiply progeny identified as superior, in order to obtain elite clones for reforestation and commercial plantations (Greenwood & Weir, 1994;Mori, Miyahara, Tsutsumi, & Kondo, 2011;Zobel & Talbert, 1984). A sexual seed orchard located in Montecillo, State of Mexico, has progeny of some families of Pinus leiophylla Schiede ex Schltdl.…”

Section: Introductionmentioning

confidence: 99%

“…La propagación del género Pinus por medio del enraizado de estacas, a partir de brotes juveniles, se realiza con el propósito de multiplicar progenies identificadas como superiores, a fin de obtener clones élite para reforestación y plantaciones comerciales (Greenwood & Weir, 1994;Mori, Miyahara, Tsutsumi, & Kondo, 2011;Zobel & Talbert, 1984). En un huerto semillero sexual, ubicado en Montecillo, Estado de México, se cuenta con progenie de algunas familias de Pinus leiophylla Schiede ex Schltdl.…”

Section: Introductionunclassified

Propagación asexual de Pinus leiophylla Schiede ex Schltdl. et Cham.

Cuevas-Cruz¹,

Jiménez‐Casas²,

Jasso-Mata³

et al. 2015

Rev Cha Se Cie For y del Amb

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Postgraduados. Carretera México-Texcoco km 36.5. C. P. 56230. Montecillo, Texcoco, Edo. de México.Correo-e: marcosjc@colpos.mx, Tel.: 595 95 20246 ext. 1454 (*Autor para correspondencia). 4 Universidad Autónoma Chapingo-CRUAN. km 38.5 Carretera México-Texcoco. C. P. 56230. Chapingo, Texcoco, Edo. de México. AbstractT he effect of substrate, type of cutting and indole 3-butyric acid (IBA) concentration on the rooting of Pinus leiophylla cuttings was evaluated with the goal of multiplying progenies of half-sib families of this species, which have showed superior growth and positive response against Toumeyella pinicola attack. Two types of substrates (100 % perlite vs. a mix of peat, perlite, vermiculite at a ratio of 1:1:1), two types of cuttings (apical vs. basal) and two concentrations of IBA (0 vs. 10,000 ppm) were used. Probability and percentage of rooting, growth of cuttings and characteristics of the roots were evaluated. Results indicate that using basal cuttings is 3.5 times more likely to induce rooting of P. leiophylla than using apical cuttings. The treatment consisting of the mixture of peatperlite-vermiculite, a basal cutting and 10,000 ppm of IBA produced 45.3 % rooting (highest percentage), while the control only yielded 8.6 % rooting (perlite, basal cutting and without IBA). Interactions with the type of substrate showed significant differences (P ≤ 0.05) in the growth of the cuttings. The use of perlite and application of IBA promoted a greater number of roots, particularly in the basal cuttings of P. leiophylla. ResumenE l efecto del sustrato, tipo de estaca y concentración de ácido indolbutírico (AIB) se evaluó en el enraizado de estacas de Pinus leiophylla con el propósito de multiplicar progenies de familias de medios hermanos con crecimiento sobresaliente. Para ello se utilizaron dos tipos de sustratos (agrolita y una mezcla de turba-agrolita-vermiculita 1:1:1), dos tipos de estacas (apicales y basales) y dos concentraciones de AIB (0 y 10,000 ppm). La probabilidad y porcentaje de enraizado, crecimiento de la estaca y características de las raíces formadas de P. leiophylla se evaluaron. Los resultados indican que usando estacas basales es 3.5 veces más probable que el enraizamiento de P. leiophylla sea exitoso que utilizando estacas apicales. El tratamiento formado por la mezcla de turba-agrolita-vermiculita, estaca basal y 10,000 ppm de AIB produjo 45.3 % de enraizamiento (mayor porcentaje), mientras que con el testigo solo se obtuvo 8.6 % de enraizamiento (agrolita, estaca basal y sin AIB). Las interacciones que incluyeron el tipo de sustrato mostraron diferencias significativas (P ≤ 0.05) en el crecimiento de la estaca. El uso de agrolita y la aplicación de AIB favorecieron un mayor número de raíces, particularmente en las estacas tipo basal de P. leiophylla. Palabras clave: Ácido 3-indolbutírico, clon, morfología de raíces, enraizamiento de estacas.

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Genetic variation in rooting ability of loblolly pine cuttings: effects of auxin and family on rooting by hypocotyl cuttings

Cited by 54 publications

References 13 publications

Isolation and characterization of an Aux/IAA gene (LaIAA2) from Larix

Isolation and characterization of an Aux/IAA gene (LaIAA2) from Larix

Vegetative propagation of patagonian cypress, a vulnerable species from the subantarctic forest of South America

Propagación asexual de Pinus leiophylla Schiede ex Schltdl. et Cham.

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