Variation Among Poplar (Populus Deltoides Bartr.) Clones for Growth, Wood Traits and Tolerance to Leaf Spot Diseases

Abstract

Poplar is economically important and fast growing tree species which is widely adopted by farmers of northwest India. The nursery study was conducted for two years to find out clonal variation for plant height, collar diameter, biomass, wood traits and incidence of leaf spot disease. Results found significant differences among the clones for all growth traits, specific gravity and fiber length. Clones L-290/84, 22-N and L-50/88 were promising for tree height and collar diameter during 1st year study. In 2nd year the tree height was highest in L-7/87 but was at par with L-34/82. L-7/87, L-247/84 and L-48/89 were promising for diameter. Clones L-48/89, L-7/87, 22-N, L-247/84, S7C8, and WSL-22 recorded superiority for both above ground and root biomass. The maximum fiber length was recorded in clone WSL-29 (0.936 mm) which was at par with those of WSL-22, L-17/92 and L-50/88. The wood specific gravity ranged from 0.383 to 0.498. Clone L-290/84 was at top rank but statistically par with 40-N, G-48, L-50/88 and T-90. The relative resistance for leaf spot was the higher in L-290/84, 40-N and WSL-29 in 1st year, and WSL-29, L-17/92, L-290/84, 22-N, 40-N, S7C8, and L-48/89 were found to be resistant during 2nd year. On the basis of all the traits clones L-48/89, 22-N, L-290/84, 40-N, and WSL-22 have shown promise and need to be tested at multiple sites before commercial cultivation.

Growth Performance of Promising Poplar (Populus deltoides Bartr.) Clones under Semi-Arid Region of Haryana, India

“…A list of different Clones of poplar (Populus deltoides) The present study showed that ample variation exists among the clones for height and diameter. The reported variations among poplar clones under study are in line with the findings ofPuri et al (2002),Ozel et al (2010) andDhillon et al (2020) in poplar.…”

Frost Cracks Show a Slight Effect on Fungal Richness in Stem Wood of Hybrid Aspen Trees in Latvia

“…The main genera are known to cause moderate, non-fatal damage: Alternaria generally causes crown diseases of aspen infecting leaves and branches, and Fusarium spp. infection symptoms include the yellowing and wilting of leaves, cankers, and necrosis [54][55][56][57][58]. Accordingly, most represented genera belonged to weak pathogen groups that consequently have a low direct impact on timber quality.…”

Screening and clone evaluation in different species for biomass productivity for clean dendro-energy generation

“…In a study conducted by Nicodemus et al (2014) [26] showed dbh growth of only 6.5cm in a four-years old plantation for clones of Casuarina junghuhniana. [6] and Tomar et al (2020) [34] for growth performance of Populus clones. The number of trees per area (stand density or spacing) has a significant impact on the yield of tree plantations (Evans, 2009) [8] .…”