Morphological characterization of newly developed orangelo (Citrus spp.) hybrids

RAUSHAN  KUMAR; NIMISHA  SHARMA; A K  DUBEY; R M  SHARMA; HATKARI  VITTAL; SANDEEP; GYAN P  MISHRA; SHRUTI  SETHI; MUKESH  SHIVRAN; DEEPAK

doi:10.56093/ijas.v94i2.142737

Authors

RAUSHAN KUMAR ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
NIMISHA SHARMA ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
A K DUBEY ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
R M SHARMA ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
HATKARI VITTAL ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
SANDEEP ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
GYAN P MISHRA ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
SHRUTI SETHI ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
MUKESH SHIVRAN ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
DEEPAK ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India

https://doi.org/10.56093/ijas.v94i2.142737

Keywords:

Diversity, Morphological, Orangelo, Quantitative variation

Abstract

Present study was carried out during 2021–23 (Ambe and Mrig bahar season) at the research farm of ICAR- Indian Agricultural Research Institute, New Delhi to analyse the morphological diversity of 24 orangelo (Citrus spp.) hybrids and their 4 parents based on 17 quantitative traits such as leaves, flowers, fruits and seed characters. Cluster analysis based on 17 morphological traits divided 28 genotypes of citrus into two main groups. A higher range of variation with average Euclidean distance coefficients ranging from 0.02–0.26 was observed between groups as well as clusters, thereby indicating that genotypes within and among clusters were highly diverse. The PCA for morphological quantitative traits showed that five components leaf lamina length (LLL); leaf lamina width (LLW); LLL: LLW; leaf lamina thickness and pedicel length, of the 17 principal component axis had Eigen-values>1 and all together accounted for over 77.76% of the total variability. Analysing the genetic relationships among the hybrids yielded important insights for potential use in future breeding programmes as valuable sources of desirable traits.

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