Abstract
One of the most important aspects in a seed orchard is the synchrony among the clones for reproductive phenology. This will decide the extent of random mating among the constituent clones and hence the genetic gain in the resultant progeny. In the present study, synchrony among clones for flowering and peak flowering was estimated through the phenogram as well as through a novel overlap index. Rating of an entire orchard for its relative degree of flowering synchronization is effective with this new measure. The present study was conducted in teak clonal seed orchard (CSO), Manchikere, Karnataka using 25 clones to study the clonal variation for flowering phenology. There are two peak periods in flowering. The first period during early May to July corresponds mainly to the clones of central and southern origin; the second period during July to August corresponding to those of northern origin. Further, these two peaks are also more apparent considering the peak flowering periods of clones. Perhaps, this is the first empirical evidence among the CSOs of teak in India where asynchrony has been documented and quantified through meticulous observations as well as by developing a new index.
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Claims 6
Claim · model-written summary
The overlap index effectively rated orchard flowering synchrony.
Verbatim
e0“Rating of an entire orchard for its relative degree of flowering synchronization is effective with this new measure”
t0“teak”
Claim · model-written summary
Teak flowering had two peak periods.
Verbatim
e0“There are two peak periods in flowering”
t0“teak”
Claim · model-written summary
Clones of central and southern origin flowered mainly in early May to July.
Verbatim
e0“The first period during early May to July corresponds mainly to the clones of central and southern origin”
t0“teak”
Claim · model-written summary
Clones of northern origin flowered mainly in July to August.
Verbatim
e0“the second period during July to August corresponding to those of northern origin”
t0“teak”
Claim · model-written summary
Two flowering peaks were more apparent using peak flowering periods.
Verbatim
e0“these two peaks are also more apparent considering the peak flowering periods of clones”
t0“teak”
Claim · model-written summary
Flowering asynchrony was documented and quantified in the teak clonal seed orchard.
Verbatim
e0“asynchrony has been documented and quantified through meticulous observations as well as by developing a new index”
t0“teak”