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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 3040-3054
DOI: https://doi.org/10.20546/ijcmas.2018.707.355


Variability and Correlation Studies for Vegetative, Floral, Nut and Yield Characters in Indigenous and Exotic Coconut Genotypes
M. Suchithraand P. Paramaguru1
1Division of Crop Improvement, ICAR-Central Plantation Crops Research Institute, Regional Station-Vittal, Dakshina Kannada, Karnataka-574243, India
2Department of Spices and Plantation, Horticulture College and Research Institute, Tamil Nadu Agricultural University, Coimbatore- 641003, Tamil Nadu, India
*Corresponding author
Abstract:

Genetic variability and correlation analysis of vegetative, floral, nut and yield characters were studied with 11 tall and 3 dwarfs which include 6 indigenous and 8 exotic coconut genotypes from diverse geographic origin. Analysis revealed a high degree of variability for most of the character studied. The variability studies among fourteen genotypes for different traits revealed that number of nuts per palm, dehusked nut weight, whole nut weight, plant height, stem girth, petiole length, shell thickness, number of female flowers and number of nuts per bunch recorded high values for phenotypic coefficient of variation and genotypic coefficient of variation. Heritability estimates for all the characters studied were grouped as high. Genetic advance expressed on per cent mean was high for whole nut weight, dehusked nut weight, petiole length, number of nuts per bunch, number of female flowers per palm, number of nuts per palm. Correlation studies with nut yield per palm showed a positive and significant association with number of female flowers /palm/year, number of nuts/bunch, whole nut weight, husk thickness, kernel thickness, shell thickness, husk weight, copra content. Oil content exhibited positive and significant association with kernel weight and copra weight. This genetic analysis indicates the use of these characters in selection for coconut improvement. Thus, these characters are to be given importance for nut yield improvement in coconut.


Keywords: Coconut, Correlation, Exotic, Genotypes, Indigenous, Variability
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How to cite this article:

Suchithra, M. and Paramaguru, P. 2018. Variability and Correlation Studies for Vegetative, Floral, Nut and Yield Characters in Indigenous and Exotic Coconut Genotypes.Int.J.Curr.Microbiol.App.Sci. 7(7): 3040-3054. doi: https://doi.org/10.20546/ijcmas.2018.707.355