Variability and correlation studies in poplar (Populus deltoides Bartr. Ex Marsh) clones for growth and quality traits

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dc.contributor.advisorDhillon, G. P. S.
dc.contributor.authorLakhwinder Singh
dc.date.accessioned2022-02-08T10:53:07Z
dc.date.available2022-02-08T10:53:07Z
dc.date.issued2021
dc.description.abstractThe present study entitled “Variability and correlation studies in poplar (Populus deltoides Bartr. Ex Marsh) clones for growth and quality traits” was conducted at main experimental area of the Department of Forestry and Natural Resources, Punjab Agricultural University, Ludhiana during the years 2019-2020. Sixteen poplar clones (14 clones introduced from YS Parmar University of Horticulture and Forestry, Nauni, Solan and 2 from PAU) were evaluated at nursery and field stage for growth and quality traits in randomized complete block design. Significant differences were found among the clones for all traits except wood specific gravity. Under nursery condition, the data were taken at three different ages (3, 7 and 11 months). Clones T-46, L-200/86 and 6503 exhibited highest collar diameter and height and were statistically at par with both check clones. Clones L-200/86 and T-98 recorded the maximum inter-nodal length and was superior than both the check clones at three different ages. The maximum root and shoot length were recorded in clone T-50 and maximum number of roots was found in clone T-46. Clone T-50 and T-33 were promising for dry root and shoot biomass. Highly significant and positive correlation was found for height with collar diameter and inter-nodal length at nursery stage. At field condition, clones check L-48/89, check L47/88, 9607 and 6503 were promising for all growth traits at three different ages (4, 4.5 and 5 years). The number of branches per meter crown length was significantly higher under clone T-98 which was superior than both the check clones. Clones check L-48/89, check L-47/88, 9607 and T-50 showed moderately resistant reaction to leaf spot under field condition. However, lower incidence of defoliators was obtained in clone T-50. The genotypic coefficient variation and phenotypic coefficient variation ranged from 11.47-38.60 % and 14.78-47.51 %, respectively. High heritability was recorded in number of branches per meter crown length (0.76 %) followed by DBH (0.73 %). The index score for morphological traits (DBH, plant height, volume index, number of branches, defoliator incidence, indarbela incidence and leaf spot incidence) was maximum clones in 9607 and check L-47/88. The clones were clustered into five distinct groups with maximum diversity of (17.659) between cluster II and cluster IV.en_US
dc.identifier.citationLakhwinder Singh (2021). Variability and correlation studies in poplar (Populus deltoides Bartr. Ex Marsh) clones for growth and quality traits (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810181875
dc.keywordsPoplar, clones, growth, quality, genetic parameters, correlation, genetic divergence, index scoreen_US
dc.language.isoEnglishen_US
dc.pages69en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemVariability and correlation studies in poplar (Populus deltoides Bartr. Ex Marsh) clones for growth and quality traitsen_US
dc.subForestryen_US
dc.themeVariability and correlation studies in poplar (Populus deltoides Bartr. Ex Marsh) clones for growth and quality traitsen_US
dc.these.typeM.Scen_US
dc.titleVariability and correlation studies in poplar (Populus deltoides Bartr. Ex Marsh) clones for growth and quality traitsen_US
dc.typeThesisen_US
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