Morphological Characterization of Different Ocimum spp. Germplasm Lines under Semi-Arid Region of Haryana

Year 2024, Volume: 10 Issue: 2, 94 - 104, 31.07.2024

Vijay Kumar C Talawade Krishan Kumar Ishwar Singh Rajesh Kumar Arya

Abstract

available germplasm lines for the development of elite genotypes. The experimental material comprising of 40 germplasm
lines of Tulsi (Ocimum spp.) received from National Bureau of Plant Genetic Resources, New Delhi were characterized for
different morphological traits viz. leaf colour, leaf shape, leaf pubescence, stem colour, stem pubescence, petiole colour,
flower colour, calyx colour, calyx pubescence, seed colour, plant height, inflorescence length and fresh herbage yield.
The investigation was carried out in the Research Area of Medicinal, Aromatic and Potential Crops Section, Department
of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar during Kharif 2022 and 2023. Among
the various categories of different traits/descriptors, the maximum number of germplasm lines were observed for leaf
lamina colour-green (25 germplasm lines), leaf shape-elliptical (40), stem colour-green (28), stem pubescence-pubescen
t(5), petiole colour-green (36), flower colour-white(27), calyx colour-green (25), calyx pubescence-pubescent (13), seed
colour-dull black (35). Plant height ranged from 70 cm (EC 388895) to 119 cm (IC 381185) and inflorescence length
from 9.3 cm (IC 75730 and IC 381185) to 24 cm (IC 387838 and EC 469904). Maximum fresh herbage yield per plant
was found for the genotype EC 388890 (1250 g) and minimum for IC 387838 (290 g). The study revealed that sufficient
genetic variability was present among different germplasm lines. This genetic variability may further be exploited for crop
improvement programme to develop improved varieties using appropriate breeding methodology

Keywords

Tulsi germplasm, morphological characterization, genetic variability

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