NDLI: Retention and allocation of $^{14}$C assimilates by maintenance leaves and harvest index of tea (Camellia sinensis L.)

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Photosynthetica : Volume 43, Issue 1, March 2005

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Retention and allocation of $^{14}$C assimilates by maintenance leaves and harvest index of tea (Camellia sinensis L.)

Content Provider	Springer Nature Link
Author	Barman, T. S. Saikia, J. K.
Copyright Year	2005
Abstract	Partitioning of $^{14}$C-labelled photosynthates to various parts of un-pruned tea clones TV1 and TV25 was assessed in vivo by exposing maintenance leaves to $^{14}$CO$_{2}$ at monthly intervals throughout the year. The plants from shoot apex to root tip were divided into twelve components to assess the allocation and retention of $^{14}$C-photosynthates by the maintenance foliage. Out of the total photosynthates produced by the maintenance leaves, only 11.08 % was allocated to the commercially useful harvestable two and a bud shoots which is accepted as the harvest index of tea. The photosynthetically active maintenance leaves retained 19.05 % while 24.56 % was distributed to the branches. The bottom and the top parts of the trunk utilized 7.44 and 7.21 %, respectively. The thick roots at the base of the trunk, medium sized roots, pencil size roots, and feeder roots imported 7.28, 7.72, 7.65, and 8.01 % of $^{14}$C assimilates, respectively. Except retention by leaves, all the plant parts of vigorous clone TV25 required higher percentage of assimilates than TV1. The mean quantities of net photosynthates utilized by the stem and the roots were 69.37 and 30.63 %, respectively.
Starting Page	283
Ending Page	287
Page Count	5
File Format	PDF
ISSN	03003604
Journal	Photosynthetica
Volume Number	43
Issue Number	2
e-ISSN	15739058
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2005-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science

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