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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
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(6): 287-297
DOI: https://doi.org/10.20546/ijcmas.2018.706.034


Estimation of Genetic Variability and Heritability for Yield and Its Related Components in Cassava (Manihot esculenta Crantz) Genotypes
B. Babu Rao1*, D.V. Swami1, P. Ashok1, B. Kalyana Babu2, D. Ramajayam3 and K. Sasikala1
1Department of Horticulture
4Department of Agronomy, Dr. Y.S.R. Horticultural University, Venkataramannagudem, West Godavari, A.P – 534101, India
2ICAR-Indian Institute of Oil Palm Research, Pedavegi, A.P – 534450, India
3ICAR-National Research Centre for Banana, Tiruchirapally, T.N – 620102, India
*Corresponding author
Abstract:

Seventy seven cassava genotypes along with three check varieties were employed for assessment of genetic variability, heritability and genetic gain during the period from 2015 to 2016 at, Horticultural Research Station, Dr. Y.S.R. Horticultural University, Venkataramannagudem, Andhra Pradesh under All India Co-ordinated Research Project on Tuber crops. Analysis of variance revealed significant differences between genotypes for sixteen quantitative characters. Higher magnitude of PCV and GCV were observed for total leaf area, number of leaves per plant, HCN content, post-harvest physiological deterioration and tuber yield per hectare indicating the existence of wide range of genetic variability in the germplasm for these traits. High heritability estimates coupled with high estimates from genetic gain as per cent of means were observed for number of leaves per plant, plant height, HCN content and moderate heritability estimates coupled with high estimates from genetic gain as per cent of means were observed for petiole length, tuber dry matter content, tuber length, post-harvest physiological deterioration and tuber yield per hectare indicated that these characters were least influenced by the environmental effects and these characters were governed by additive genes and selection will be rewarding for improvement of such traits.


Keywords: Cassava, GCV, PCV, Heritability and Genetic advance
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How to cite this article:

Babu Rao, B., D.V. Swami, P. Ashok, B. Kalyana Babu, D. Ramajayam and Sasikala, K. 2018. Estimation of Genetic Variability and Heritability for Yield and Its Related Components in Cassava (Manihot esculenta Crantz) Genotypes.Int.J.Curr.Microbiol.App.Sci. 7(6): 287-297. doi: https://doi.org/10.20546/ijcmas.2018.706.034