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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(5): 759-775
DOI: https://doi.org/10.20546/ijcmas.2017.605.086


Correlation Studies on Association of Morphological and Biochemical Traits for Potato Apical Leaf-Curl Disease Resistance or Susceptibility
Devashri Maan* A.K. Bhatia and Mandeep Rathi1
Department of Vegetable Science
1Department of Entomology, CCS Haryana Agricultural University, Hisar-125004, Haryana, India
*Corresponding author
Abstract:

High phenotypic coefficient of variation and genotypic coefficient of variation were observed for percent potato apical leaf-curl disease (PALCD) incidence at 40, 60 and 80 DAP, whitefly population at 20 and 30 DAE and phenols. High heritability (broad sense) along with genetic advance as per cent of mean was found in plant height at 60 DAP, per cent PALCD incidence at 40, 60 and 80 DAP, whitefly population at 20, 30 and 40 DAE, phenols, number of stomata per leaf, foliage senescence at harvest, plant vigour at 60 DAP and total yield, indicating simple selection method for the improvement of these traits. Correlation studies revealed that per cent PALCD incidence was found significantly and positively associated with whitefly population and number of stomata per leaf, which indicates that for improving disease resistance, selection should be made for those lines, which have less number of whitefly and number of stomata. The per cent PALCD incidence was significant and negatively associated with plant height, plant vigour, weight of stem per hill, weight of leaves per hill, weight of foliage per hill, leaf area index, total yield, marketable yield, harvest index and phenols which suggests that for potato apical leaf-curl disease resistance, selection should be made on the basis of high values of these characters. Path analysis indicated that the per cent PALCD incidence had positive and highest contribution (1.941) towards plant height at 60 days after planting. Highest indirect contribution was exhibited by plant vigour at 60 days after planting (-0.032) Low population of whitefly, less number of stomata and high phenols were the main characters contributed towards potato apical leaf curl disease resistance.


Keywords: Potato, apical leaf curl disease, heritability, genetic advance, correlation coefficient.
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How to cite this article:

Devashri Maan, A.K. Bhatia and Mandeep Rathi. 2017. Correlation Studies on Association of Morphological and Biochemical Traits for Potato Apical Leaf-Curl Disease Resistance or SusceptibilityInt.J.Curr.Microbiol.App.Sci. 6(5): 759-775. doi: https://doi.org/10.20546/ijcmas.2017.605.086