Variation in Phenology and Reproductive Biology in a Clonal Seed Orchard of Teak

Manoj K. Behera, N. Bhola, D. Lenka

Abstract


Variation in phenology and reproductive biology among different clones of a species help in the selection of better genotypes. We studied a 33 year old clonal seed orchard of Teak (Tectona grandis) to estimate the variation in phenology and reproductive biology of 13 distinct clones derived from two different provenances. The peak phonological events like leaf shedding, leaf renewal, flowering, fruiting and fruit fall were observed in January, May, August, September and December respectively. The clones such as ORANP4 and ORANR2 showed their activeness in having phonological events earlier. The number of flowers produced per inflorescence was highest in ORANP3 (5230) while ORANR5 produced the lowest (3030). However, ORANP7 produced highest number of fruits per tree (570) closely followed by ORANP4 (563) and ORANP3 (528). All the reproductive traits expressed very high percentage of heritability (>90%) which indicates that these traits are useful for further selection to produce high yielding genotypes.

Keywords


Tectona grandis L.; Clone; Phenology; Heritability; Genotypes; Provenance

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