GENOTYPE AND SITE INTERACTION STUDIES OF Salix CLONES IN PUNJAB
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Date
2013
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Punjab Agricultural University, Ludhiana
Abstract
The field trials were conducted during 2012-13 at three locations (environment 1:
University Seed Farm, Ladhowal; environment 2: Badhian forest, Range and Division Dasuya
and environment 3: Alamwala forest nursery, Range Malout, Division Faridkot) located in central
plane zone, sub-mountain undulating zone and south-western zones of Punjab respectively.
Twenty-two willow clones were planted in a randomized block design with three replications, to
study the genotype and site interaction among different clones. The data for plant height and
collar diameter was recorded at all the three locations and data for other parameters i.e., leaf
parameters, leaf display, number of branches and insect/pest attack was recorded only at
environment 1. All the characters under study at environment 1 exhibited significant differences
among different clones. Differences among clones for plant height and collar diameter were
significant under all three environments as well as after pooled analysis. On the basis of plant
height and collar diameter, clone UHFS-13, UHFS-1 and UHFS-19 was best in environment 1,
environment 2 and 3, respectively. Clone UHFS-1 and UHFS-19 showed wider adaptability. The
values of genotypic variability for different traits were found between low to high and for
phenotypic variability between moderate to high. Values of heritability and genetic gain were
observed between low to high. On the basis of growth, number of branches leaf parameters and
leaf display, clone UHFS-2, UHFS-5, UHFS-12 and UHFS-18 will be suitable for agroforestry,
and clone UHFS-3, UHFS-13, UHFS-14 and UHFS-16 for biofuel or phytoremediation and
Clone UHFS-10 for landscape purposes.
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