NDLI: Ex-Situ Conservation and Selection of Superior Genotypes Through Trait Association Studies in Asparagus racemosus

Content Provider	Springer Nature Link
Author	Barthwal, Santan Kant, Rama Kumar, Ashok
Copyright Year	2014
Abstract	An experiment consisting of twenty seed sources of Asparagus racemosus was planted in randomized block design with three replications during February 2007 at Forest Research Institute Dehradun, India. Observations were recorded at the age of two and half years to assess them for various growth parameters to know association pattern for trait of economic interest for formulation of suitable selection strategy for genetic improvement. Correlation coefficients suggested that shoot dry weight, maximum shoot height, number of tubers, number of shoots and tuber length had positive and highly significant association with tuber dry weight, hence tuber dry weight can be increased indirectly through these correlated characters. Positive correlation may be attributed to the coupling phase of linkage. Path coefficients at genotypic and phenotypic level revealed that the maximum positive direct effect on tuber dry weight was exerted by shoot dry weight. However, maximum shoot height, tuber length, number of shoots and number of tubers through shoot dry weight have high order positive indirect effect on tuber dry weight. It is clear from estimates of correlation coefficients that above cited traits have significantly positive associations. It is suggested that during formulating selection strategies higher tuber yield weightage should be given to these traits.
Starting Page	829
Ending Page	836
Page Count	8
File Format	PDF
ISSN	03698211
Journal	Proceedings of the National Academy of Sciences, India Section B: Biological Sciences
Volume Number	84
Issue Number	3
e-ISSN	22501746
Language	English
Publisher	Springer India
Publisher Date	2014-03-07
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Ex-situ conservation Path coefficients Plant Biochemistry Nucleic Acid Chemistry Asparagus racemosus Correlation coefficients Selection strategy Behavioural Sciences
Content Type	Text
Resource Type	Article
Subject	Environmental Science Agricultural and Biological Sciences

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