Verification of new Populus nigra L. clone improvement based on their performance over three rotations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027073%3A_____%2F20%3AN0000019" target="_blank" >RIV/00027073:_____/20:N0000019 - isvavai.cz</a>

Result on the web

<a href="https://iforest.sisef.org/pdf/?id=ifor3171-013" target="_blank" >https://iforest.sisef.org/pdf/?id=ifor3171-013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3832/ifor3171-013" target="_blank" >10.3832/ifor3171-013</a>

Result language

angličtina

Original language name

Verification of new Populus nigra L. clone improvement based on their performance over three rotations

Original language description

Populus nigra is an important autochthonous woody plant that can be grown as a renewable energy source. The possibility of its improvement through intraspecific hybridization was tested. Differences in biomass production, growth parameters, Melampsora larici-populina rust resistance and drought tolerance were evaluated among 19 intraspecific hybrids from controlled crosses, 2 clones selected from natural populations and the ‘MAX 4’ clone (P. nigra × P. maximowiczii). These P. nigra clones from controlled crosses were chosen from more than 2,000 hybrid individuals whose parents were selected from natural populations in the Czech Republic. A field trial was set up in Průhonice, Czech Republic (320 m a.s.l., 591 mm rainfall annually, mean annual temperature of 9.5 °C). The planting density was 6,061 plants ha-1, and the plants were coppiced three times at 3-year intervals. The trial was irrigated only during its establishment. Among the clones, significant differences were found in all the evaluated traits over three rotations. An average dry matter yield of the best clone, ‘MAX 4’, was 12.8 t ha-1 yr-1 over three harvests. The best black poplar clone reached up to 9.4 t ha-1 yr-1 in three harvests. Rust resistance was constant over 9 years and high for the three P. nigra clones (two from controlled crosses and one from natural populations). Moreover, the best P. nigra clones from controlled crosses showed higher drought tolerance than the ‘MAX 4’ clone. Breeding progress was confirmed, and most of the P. nigra clones from controlled crosses performed better than the clones selected from natural populations. The trial validated the suitability of natural populations for use as gene sources for intraspecific hybridization and as sources of clones with traits comparable with those of interspecific clones. These new P. nigra clones can replace allochthonous clones in areas where autochthonous P. nigra populations are threatened by introgression.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

iForest–Biogeosciences and Forestry

ISSN

1971-7458

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

JUN 2020

Country of publishing house

IT - ITALY

Number of pages

9

Pages from-to

185-193

UT code for WoS article

000533302800001

EID of the result in the Scopus database

2-s2.0-85085519618