Evaluation of Photosynthetic Characteristics and Growth Traits in Teak(Tectona grandis L.f) Clones

doi:10.7525/j.issn.1673-5102.2020.02.007

Abstract

Abstract: This study was to analyze the genetic variation of photosynthetic physiology and growth trait among teak clones, and to select superior teak clones. The gas exchange, chlorophyll fluorescence parameters and tree height of 19 teak clones and one CK which selected from different provenances were measured based on a field testing forest, the photosynthetic characteristics and their relationships were analyzed. The gas exchange, chlorophyll fluorescence and growth traits had very significant difference among teak clones and provenances. There were abundant genetic variation in measured traits in teak clones except maximum photochemical ef?ciency of PSⅡ(F_v/F_m). Photosynthetic physiology of P_n had no significantly correlation with height growth at early stage. The clones 71-7 and FS3 were selected with relatively higher photosynthesis rate and growth. Emphasis should be put on the resources introduced from India in further breeding research that aims at high photosynthetic efficiency in teak. Photosynthetic physiology and field growth should be evaluated to selected superior teak clones.

Key words: Tectona grandis, clone, photosynthetic physiology, growth trait, genetic variation

CLC Number:

Q949.777.5

LIU Bing-Yu, HUANG Gui-Hua, LIANG Kun-Nan, WANG Xi-Yang, CHEN Tian-Yu, ZHOU Zai-Zhi, YANG Guang. Evaluation of Photosynthetic Characteristics and Growth Traits in Teak(Tectona grandis L.f) Clones[J]. Bulletin of Botanical Research, 2020, 40(2): 209-216.

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