Genetic Variability, Correlation and Path-Coefficient Studies in Litchi (Litchi chinensis Sonn.) for Plant Growth, Panicle and Yield Attributes

Authors

  • Narayan Lal ICAR-Indian Institute of Soil Science, Bhopal, Madhya Pradesh (462 038), India
  • Awtar Singh ICAR-Indian Agricultural Research Institute, New Delhi (110 012), India
  • Abhay Kumar ICAR-National Research Centre on Litchi, Muzaffarpur, Bihar (842 002), India
  • E. S. Marboh ICAR-Central Citrus Research Institute, Regional Research Centre for Citrus, Biswanath Chariali, Assam (784 176), India
  • A. K. Gupta ICAR-Central Institute of Subtropical Horticultural, Lucknow, U.P. (226 101), India
  • S. D. Pandey ICAR-National Research Centre on Litchi, Muzaffarpur, Bihar (842 002), India
  • Vishal Nath ICAR- Indian Agricultural Research Institute, Hazaribagh, Jharkhand (825 405), India

Keywords:

Litchi, clone, correlation coefficient, path analysis

Abstract

Studies were carried out in National Active Germplasm Site (NAGS) at ICAR-NRC on Litchi, Muzaffarpur, Bihar, India during 2018 and 2019 to find out the association between different characters and magnitude of association of different characters with yield (kg plant-1) in nine clones of litchi (Litchi chinensis Sonn.). Result revealed that genotypic coefficient were higher than their corresponding phenotypic ones implying an inherent relationship among them. The differences between genotypic and phenotypic coefficient of variation (PCV and GCV) were found narrow for all traits indicate least influence of environment on traits. Heritability was more than 80% for all the parameters studied except seed weight (34.90%) and TSS (73.20%). Correlation analysis quantifies only the degree of association between two characters and non-significant correlation coefficient value cannot be taken to imply absence of functional relationship between the two variables but path coefficient analysis reveals this by breaking the total correlation coefficient into components of direct and indirect effects. The number of leaflet, leaf length, leaf width, rachis length, petiole length, length of panicle, fruit weight, pulp weight, TSS, total sugar and seed weight exhibited positive correlation. Among the character studied, leaf length (1.646), TSS (0.975), length of panicle (0.900), petiole length (0.639), and number of fruit per panicle (0.601), seed weight (0.465) and pulp weight (0.370) recorded maximum positive direct effect towards yield at both the level. This study revealed that leaf length, panicle length, number of fruit per panicle and seed weight could form a selection criterion for yield improvement in litchi.

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Published

2022-01-31

How to Cite

1.
Lal N, Singh A, Kumar A, Marboh ES, Gupta AK, Pandey SD, et al. Genetic Variability, Correlation and Path-Coefficient Studies in Litchi (Litchi chinensis Sonn.) for Plant Growth, Panicle and Yield Attributes. IJBSM [Internet]. 2022 Jan. 31 [cited 2024 May 24];13(Jan, 1):29-36. Available from: https://ojs.pphouse.org/index.php/IJBSM/article/view/4176

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