Ecology, Environment and Conservation Paper

Vol.12, Issue 2, 2006; Page No.(257-260)

VARIATION IN EARLY AND SATE WOOD PRODUCTION IN POPLAR CLONES UNDER HIGH DENSITY PLANTATION

Rajesh Chauhan, K. Venkaiah oid ilil.K.Thakur

Abstract

Variation in early and late wood production of 9 years old 20 Populus deltoides clones was studied in Kullu valley of Himachal Pradesh. Different Poplar clones under study showed significant differences in terms of mean early and late wood production. The clones '1C', 'D-121', and '9-48' showed high rate of early wood production whereas late wood production was quite high in the clones '9-48', 'G-48' and '2504'. The major factor that affects the variation in early and late wood formation between different clones might be genetic constitution of individual clone. However irregular increase or decrease in wood formation over the years is attributed to severe climatic conditions in the experimental area during different period of its growth.. The clones 'D-121', `1C', '9-48', 'G-487C-181' and '2504' were adjudged best performer in terms of mean annual early and late wood production. Key Words: Poplar, clones, early wood, late wood, high density.

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